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Copyright 2017- Paul Ganssle <paul@ganssle.io>
Copyright 2017- dateutil contributors (see AUTHORS file)
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
The above license applies to all contributions after 2017-12-01, as well as
all contributions that have been re-licensed (see AUTHORS file for the list of
contributors who have re-licensed their code).
--------------------------------------------------------------------------------
dateutil - Extensions to the standard Python datetime module.
Copyright (c) 2003-2011 - Gustavo Niemeyer <gustavo@niemeyer.net>
Copyright (c) 2012-2014 - Tomi Pieviläinen <tomi.pievilainen@iki.fi>
Copyright (c) 2014-2016 - Yaron de Leeuw <me@jarondl.net>
Copyright (c) 2015- - Paul Ganssle <paul@ganssle.io>
Copyright (c) 2015- - dateutil contributors (see AUTHORS file)
All rights reserved.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are met:
* Redistributions of source code must retain the above copyright notice,
this list of conditions and the following disclaimer.
* Redistributions in binary form must reproduce the above copyright notice,
this list of conditions and the following disclaimer in the documentation
and/or other materials provided with the distribution.
* Neither the name of the copyright holder nor the names of its
contributors may be used to endorse or promote products derived from
this software without specific prior written permission.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
The above BSD License Applies to all code, even that also covered by Apache 2.0.

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script.module.dateutil
======================
Python dateutil library packed for Kodi.
See https://github.com/dateutil/dateutil

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<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
<addon id="script.module.dateutil"
name="python-dateutil"
version="2.8.2"
provider-name="Paul Ganssle, Gustavo Niemeyer, Tomi Pieviläinen, Yaron de Leeuw">
<requires>
<import addon="xbmc.python" version="3.0.0"/>
<import addon="script.module.six" version="1.15.0+matrix.1"/>
</requires>
<extension point="xbmc.python.module"
library="lib" />
<extension point="xbmc.addon.metadata">
<summary lang="en_GB">Extensions to the standard Python datetime module</summary>
<description lang="en_GB">The dateutil module provides powerful extensions to the standard datetime module, available in Python.</description>
<license>Apache-2.0, BSD-3-Clause</license>
<website>https://dateutil.readthedocs.io/en/stable/</website>
<source>https://github.com/dateutil/dateutil</source>
<assets>
<icon>icon.png</icon>
</assets>
</extension>
</addon>

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Copyright 2017- Paul Ganssle <paul@ganssle.io>
Copyright 2017- dateutil contributors (see AUTHORS file)
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
The above license applies to all contributions after 2017-12-01, as well as
all contributions that have been re-licensed (see AUTHORS file for the list of
contributors who have re-licensed their code).
--------------------------------------------------------------------------------
dateutil - Extensions to the standard Python datetime module.
Copyright (c) 2003-2011 - Gustavo Niemeyer <gustavo@niemeyer.net>
Copyright (c) 2012-2014 - Tomi Pieviläinen <tomi.pievilainen@iki.fi>
Copyright (c) 2014-2016 - Yaron de Leeuw <me@jarondl.net>
Copyright (c) 2015- - Paul Ganssle <paul@ganssle.io>
Copyright (c) 2015- - dateutil contributors (see AUTHORS file)
All rights reserved.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are met:
* Redistributions of source code must retain the above copyright notice,
this list of conditions and the following disclaimer.
* Redistributions in binary form must reproduce the above copyright notice,
this list of conditions and the following disclaimer in the documentation
and/or other materials provided with the distribution.
* Neither the name of the copyright holder nor the names of its
contributors may be used to endorse or promote products derived from
this software without specific prior written permission.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
The above BSD License Applies to all code, even that also covered by Apache 2.0.

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Version 2.8.2 (2021-07-08)
==========================
Data updates
------------
- Updated tzdata version to 2021a. (gh pr #1128)
Bugfixes
--------
- Fixed a bug in the parser where non-``ValueError`` exceptions would be raised
during exception handling; this would happen, for example, if an
``IllegalMonthError`` was raised in ``dateutil`` code. Fixed by Mark Bailey.
(gh issue #981, pr #987).
- Fixed the custom ``repr`` for ``dateutil.parser.ParserError``, which was not
defined due to an indentation error. (gh issue #991, gh pr #993)
- Fixed a bug that caused ``b'`` prefixes to appear in parse_isodate exception
messages. Reported and fixed by Paul Brown (@pawl) (gh pr #1122)
- Make ``isoparse`` raise when trying to parse times with inconsistent use of
`:` separator. Reported and fixed by @mariocj89 (gh pr #1125).
- Fixed ``tz.gettz()`` not returning local time when passed an empty string.
Reported by @labrys (gh issues #925, #926). Fixed by @ffe4 (gh pr #1024)
Documentation changes
---------------------
- Rearranged parser documentation into "Functions", "Classes" and "Warnings and
Exceptions" categories. (gh issue #992, pr #994).
- Updated ``parser.parse`` documentation to reflect the switch from
``ValueError`` to ``ParserError``. (gh issue #992, pr #994).
- Fixed methods in the ``rrule`` module not being displayed in the docs. (gh pr
#1025)
- Changed some relative links in the exercise documentation to refer to the
document locations in the input tree, rather than the generated HTML files in
the HTML output tree (which presumably will not exist in non-HTML output
formats). (gh pr #1078).
Misc
----
- Moved ``test_imports.py``, ``test_internals.py`` and ``test_utils.py`` to
pytest. Reported and fixed by @jpurviance (gh pr #978)
- Added project_urls for documentation and source. Patch by @andriyor (gh pr
#975).
- Simplified handling of bytes and bytearray in ``_parser._timelex``. Reported
and fixed by @frenzymadness (gh issue #1060).
- Changed the tests against the upstream tz database to always generate fat
binaries, since until GH-590 and GH-1059 are resolved, "slim" zic binaries
will cause problems in many zones, causing the tests to fail. This also
updates ``zoneinfo.rebuild`` to always generate fat binaries. (gh pr #1076).
- Moved sdist and wheel generation to use `python-build`. Reported and fixed by
@mariocj89 (gh pr #1133).
Version 2.8.1 (2019-11-03)
==========================
Data updates
------------
- Updated tzdata version to 2019c.
Bugfixes
--------
- Fixed a race condition in the ``tzoffset`` and ``tzstr`` "strong" caches on
Python 2.7. Reported by @kainjow (gh issue #901).
- Parsing errors will now raise ``ParserError``, a subclass of ``ValueError``,
which has a nicer string representation. Patch by @gfyoung (gh pr #881).
- ``parser.parse`` will now raise ``TypeError`` when ``tzinfos`` is passed a
type that cannot be interpreted as a time zone. Prior to this change, it
would raise an ``UnboundLocalError`` instead. Patch by @jbrockmendel (gh pr
#891).
- Changed error message raised when when passing a ``bytes`` object as the time
zone name to gettz in Python 3. Reported and fixed by @labrys () (gh issue
#927, gh pr #935).
- Changed compatibility logic to support a potential Python 4.0 release. Patch
by Hugo van Kemenade (gh pr #950).
- Updated many modules to use ``tz.UTC`` in favor of ``tz.tzutc()`` internally,
to avoid an unnecessary function call. (gh pr #910).
- Fixed issue where ``dateutil.tz`` was using a backported version of
``contextlib.nullcontext`` even in Python 3.7 due to a malformed import
statement. (gh pr #963).
Tests
-----
- Switched from using assertWarns to using pytest.warns in the test suite. (gh
pr #969).
- Fix typo in setup.cfg causing PendingDeprecationWarning to not be explicitly
specified as an error in the warnings filter. (gh pr #966)
- Fixed issue where ``test_tzlocal_offset_equal`` would fail in certain
environments (such as FreeBSD) due to an invalid assumption about what time
zone names are provided. Reported and fixed by Kubilay Kocak (gh issue #918,
pr #928).
- Fixed a minor bug in ``test_isoparser`` related to ``bytes``/``str``
handling. Fixed by @fhuang5 (gh issue #776, gh pr #879).
- Explicitly listed all markers used in the pytest configuration. (gh pr #915)
- Extensive improvements to the parser test suite, including the adoption of
``pytest``-style tests and the addition of parametrization of several test
cases. Patches by @jbrockmendel (gh prs #735, #890, #892, #894).
- Added tests for tzinfos input types. Patch by @jbrockmendel (gh pr #891).
- Fixed failure of test suite when changing the TZ variable is forbidden.
Patch by @shadchin (gh pr #893).
- Pinned all test dependencies on Python 3.3. (gh prs #934, #962)
Documentation changes
---------------------
- Fixed many misspellings, typos and styling errors in the comments and
documentation. Patch by Hugo van Kemenade (gh pr #952).
Misc
----
- Added Python 3.8 to the trove classifiers. (gh pr #970)
- Moved as many keys from ``setup.py`` to ``setup.cfg`` as possible. Fixed by
@FakeNameSE, @aquinlan82, @jachen20, and @gurgenz221 (gh issue #871, gh pr
#880).
- Reorganized ``parser`` methods by functionality. Patch by @jbrockmendel (gh
pr #882).
- Switched ``release.py`` over to using ``pep517.build`` for creating releases,
rather than direct invocations of ``setup.py``. Fixed by @smeng10 (gh issue
#869, gh pr #875).
- Added a "build" environment into the tox configuration, to handle dependency
management when making releases. Fixed by @smeng10 (gh issue #870,r
gh pr #876).
- GH #916, GH #971
Version 2.8.0 (2019-02-04)
==========================
Data updates
------------
- Updated tzdata version to to 2018i.
Features
--------
- Added support for ``EXDATE`` parameters when parsing ``rrule`` strings.
Reported by @mlorant (gh issue #410), fixed by @nicoe (gh pr #859).
- Added support for sub-minute time zone offsets in Python 3.6+.
Fixed by @cssherry (gh issue #582, pr #763)
- Switched the ``tzoffset``, ``tzstr`` and ``gettz`` caches over to using weak
references, so that the cache expires when no other references to the
original ``tzinfo`` objects exist. This cache-expiry behavior is not
guaranteed in the public interface and may change in the future. To improve
performance in the case where transient references to the same time zones
are repeatedly created but no strong reference is continuously held, a
smaller "strong value" cache was also added. Weak value cache implemented by
@cs-cordero (gh pr #672, #801), strong cache added by
Gökçen Nurlu (gh issue #691, gh pr #761)
Bugfixes
--------
- Add support for ISO 8601 times with comma as the decimal separator in the
``dateutil.parser.isoparse`` function. (gh pr #721)
- Changed handling of ``T24:00`` to be compliant with the standard. ``T24:00``
now represents midnight on the *following* day.
Fixed by @cheukting (gh issue #658, gh pr #751)
- Fixed an issue where ``isoparser.parse_isotime`` was unable to handle the
``24:00`` variant representation of midnight. (gh pr #773)
- Added support for more than 6 fractional digits in `isoparse`.
Reported and fixed by @jayschwa (gh issue #786, gh pr #787).
- Added 'z' (lower case Z) as valid UTC time zone in isoparser.
Reported by @cjgibson (gh issue #820). Fixed by @Cheukting (gh pr #822)
- Fixed a bug with base offset changes during DST in ``tzfile``, and refactored
the way base offset changes are detected. Originally reported on
Stack Overflow by @MartinThoma. (gh issue #812, gh pr #810)
- Fixed error condition in ``tz.gettz`` when a non-ASCII timezone is passed on
Windows in Python 2.7. (gh issue #802, pr #861)
- Improved performance and inspection properties of ``tzname`` methods.
(gh pr #811)
- Removed unnecessary binary_type compatibility shims.
Added by @jdufresne (gh pr #817)
- Changed ``python setup.py test`` to print an error to ``stderr`` and exit
with 1 instead of 0. Reported and fixed by @hroncok (gh pr #814)
- Added a ``pyproject.toml`` file with build requirements and an explicitly
specified build backend. (gh issue #736, gh prs #746, #863)
Documentation changes
---------------------
- Added documentation for the ``rrule.rrulestr`` function.
Fixed by @prdickson (gh issue #623, gh pr #762)
- Add documentation for the ``dateutil.tz.win`` module and mocked out certain
Windows-specific modules so that autodoc can still be run on non-Windows
systems. (gh issue #442, pr #715)
- Added changelog to documentation. (gh issue #692, gh pr #707)
- Improved documentation on the use of ``until`` and ``count`` parameters in
``rrule``. Fixed by @lucaferocino (gh pr #755).
- Added an example of how to use a custom ``parserinfo`` subclass to parse
non-standard datetime formats in the examples documentation for ``parser``.
Added by @prdickson (gh #753)
- Expanded the description and examples in the ``relativedelta`` class.
Contributed by @andrewcbennett (gh pr #759)
- Improved the contributing documentation to clarify where to put new changelog
files. Contributed by @andrewcbennett (gh pr #757)
- Fixed a broken doctest in the ``relativedelta`` module.
Fixed by @nherriot (gh pr #758).
- Reorganized ``dateutil.tz`` documentation and fixed issue with the
``dateutil.tz`` docstring. (gh pr #714)
Misc
----
- GH #720, GH #723, GH #726, GH #727, GH #740, GH #750, GH #760, GH #767,
GH #772, GH #773, GH #780, GH #784, GH #785, GH #791, GH #799, GH #813,
GH #836, GH #839, GH #857
Version 2.7.5 (2018-10-27)
==========================
Data updates
------------
- Update tzdata to 2018g
Version 2.7.4 (2018-10-24)
==========================
Data updates
------------
- Updated tzdata version to 2018f.
Version 2.7.3 (2018-05-09)
==========================
Data updates
------------
- Update tzdata to 2018e. (gh pr #710)
Bugfixes
--------
- Fixed an issue where ``parser.parse`` would raise ``Decimal``-specific errors
instead of a standard ``ValueError`` if certain malformed values were parsed
(e.g. ``NaN`` or infinite values). Reported and fixed by
@amureki (gh issue #662, gh pr #679).
- Fixed issue in ``parser`` where a ``tzinfos`` call explicitly returning
``None`` would throw a ``ValueError``.
Fixed by @parsethis (gh issue #661, gh pr #681)
- Fixed incorrect parsing of certain dates earlier than 100 AD when represented
in the form "%B.%Y.%d", e.g. "December.0031.30". (gh issue #687, pr #700)
- Added time zone inference when initializing an ``rrule`` with a specified
``UNTIL`` but without an explicitly specified ``DTSTART``; the time zone
of the generated ``DTSTART`` will now be taken from the ``UNTIL`` rule.
Reported by @href (gh issue #652). Fixed by @absreim (gh pr #693).
Documentation changes
---------------------
- Corrected link syntax and updated URL to https for ISO year week number
notation in relativedelta examples. (gh issue #670, pr #711)
- Add doctest examples to tzfile documentation. Done by @weatherpattern and
@pganssle (gh pr #671)
- Updated the documentation for relativedelta. Removed references to tuple
arguments for weekday, explained effect of weekday(_, 1) and better explained
the order of operations that relativedelta applies. Fixed by @kvn219
@huangy22 and @ElliotJH (gh pr #673)
- Added changelog to documentation. (gh issue #692, gh pr #707)
- Changed order of keywords in rrule docstring. Reported and fixed by
@rmahajan14 (gh issue #686, gh pr #695).
- Added documentation for ``dateutil.tz.gettz``. Reported by @pganssle (gh
issue #647). Fixed by @weatherpattern (gh pr #704)
- Cleaned up malformed RST in the ``tz`` documentation. (gh issue #702, gh pr
#706)
- Changed the default theme to ``sphinx_rtd_theme``, and changed the sphinx
configuration accordingly. (gh pr #707)
- Reorganized ``dateutil.tz`` documentation and fixed issue with the
``dateutil.tz`` docstring. (gh pr #714)
Misc
----
- GH #674, GH #688, GH #699
Version 2.7.2 (2018-03-26)
==========================
Bugfixes
--------
- Fixed an issue with the setup script running in non-UTF-8 environment.
Reported and fixed by @gergondet (gh pr #651)
Misc
----
- GH #655
Version 2.7.1 (2018-03-24)
===========================
Data updates
------------
- Updated tzdata version to 2018d.
Bugfixes
--------
- Fixed issue where parser.parse would occasionally raise
decimal.Decimal-specific error types rather than ValueError. Reported by
@amureki (gh issue #632). Fixed by @pganssle (gh pr #636).
- Improve error message when rrule's dtstart and until are not both naive or
both aware. Reported and fixed by @ryanpetrello (gh issue #633, gh pr #634)
Misc
----
- GH #644, GH #648
Version 2.7.0
=============
- Dropped support for Python 2.6 (gh pr #362 by @jdufresne)
- Dropped support for Python 3.2 (gh pr #626)
- Updated zoneinfo file to 2018c (gh pr #616)
- Changed licensing scheme so all new contributions are dual licensed under
Apache 2.0 and BSD. (gh pr #542, issue #496)
- Added __all__ variable to the root package. Reported by @tebriel
(gh issue #406), fixed by @mariocj89 (gh pr #494)
- Added python_requires to setup.py so that pip will distribute the right
version of dateutil. Fixed by @jakec-github (gh issue #537, pr #552)
- Added the utils submodule, for miscellaneous utilities.
- Added within_delta function to utils - added by @justanr (gh issue #432,
gh pr #437)
- Added today function to utils (gh pr #474)
- Added default_tzinfo function to utils (gh pr #475), solving an issue
reported by @nealmcb (gh issue #94)
- Added dedicated ISO 8601 parsing function isoparse (gh issue #424).
Initial implementation by @pganssle in gh pr #489 and #622, with a
pre-release fix by @kirit93 (gh issue #546, gh pr #573).
- Moved parser module into parser/_parser.py and officially deprecated the use
of several private functions and classes from that module. (gh pr #501, #515)
- Tweaked parser error message to include rejected string format, added by
@pbiering (gh pr #300)
- Add support for parsing bytesarray, reported by @uckelman (gh issue #417) and
fixed by @uckelman and @pganssle (gh pr #514)
- Started raising a warning when the parser finds a timezone string that it
cannot construct a tzinfo instance for (rather than succeeding with no
indication of an error). Reported and fixed by @jbrockmendel (gh pr #540)
- Dropped the use of assert in the parser. Fixed by @jbrockmendel (gh pr #502)
- Fixed to assertion logic in parser to support dates like '2015-15-May',
reported and fixed by @jbrockmendel (gh pr #409)
- Fixed IndexError in parser on dates with trailing colons, reported and fixed
by @jbrockmendel (gh pr #420)
- Fixed bug where hours were not validated, leading to improper parse. Reported
by @heappro (gh pr #353), fixed by @jbrockmendel (gh pr #482)
- Fixed problem parsing strings in %b-%Y-%d format. Reported and fixed by
@jbrockmendel (gh pr #481)
- Fixed problem parsing strings in the %d%B%y format. Reported by @asishm
(gh issue #360), fixed by @jbrockmendel (gh pr #483)
- Fixed problem parsing certain unambiguous strings when year <99 (gh pr #510).
Reported by @alexwlchan (gh issue #293).
- Fixed issue with parsing an unambiguous string representation of an ambiguous
datetime such that if possible the correct value for fold is set. Fixes
issue reported by @JordonPhillips and @pganssle (gh issue #318, #320,
gh pr #517)
- Fixed issue with improper rounding of fractional components. Reported by
@dddmello (gh issue #427), fixed by @m-dz (gh pr #570)
- Performance improvement to parser from removing certain min() calls. Reported
and fixed by @jbrockmendel (gh pr #589)
- Significantly refactored parser code by @jbrockmendel (gh prs #419, #436,
#490, #498, #539) and @pganssle (gh prs #435, #468)
- Implemented of __hash__ for relativedelta and weekday, reported and fixed
by @mrigor (gh pr #389)
- Implemented __abs__ for relativedelta. Reported by @binnisb and @pferreir
(gh issue #350, pr #472)
- Fixed relativedelta.weeks property getter and setter to work for both
negative and positive values. Reported and fixed by @souliane (gh issue #459,
pr #460)
- Fixed issue where passing whole number floats to the months or years
arguments of the relativedelta constructor would lead to errors during
addition. Reported by @arouanet (gh pr #411), fixed by @lkollar (gh pr #553)
- Added a pre-built tz.UTC object representing UTC (gh pr #497)
- Added a cache to tz.gettz so that by default it will return the same object
for identical inputs. This will change the semantics of certain operations
between datetimes constructed with tzinfo=tz.gettz(...). (gh pr #628)
- Changed the behavior of tz.tzutc to return a singleton (gh pr #497, #504)
- Changed the behavior of tz.tzoffset to return the same object when passed the
same inputs, with a corresponding performance improvement (gh pr #504)
- Changed the behavior of tz.tzstr to return the same object when passed the
same inputs. (gh pr #628)
- Added .instance alternate constructors for tz.tzoffset and tz.tzstr, to
allow the construction of a new instance if desired. (gh pr #628)
- Added the tz.gettz.nocache function to allow explicit retrieval of a new
instance of the relevant tzinfo. (gh pr #628)
- Expand definition of tz.tzlocal equality so that the local zone is allow
equality with tzoffset and tzutc. (gh pr #598)
- Deprecated the idiosyncratic tzstr format mentioned in several examples but
evidently designed exclusively for dateutil, and very likely not used by
any current users. (gh issue #595, gh pr #606)
- Added the tz.resolve_imaginary function, which generates a real date from
an imaginary one, if necessary. Implemented by @Cheukting (gh issue #339,
gh pr #607)
- Fixed issue where the tz.tzstr constructor would erroneously succeed if
passed an invalid value for tzstr. Fixed by @pablogsal (gh issue #259,
gh pr #581)
- Fixed issue with tz.gettz for TZ variables that start with a colon. Reported
and fixed by @lapointexavier (gh pr #601)
- Added a lock to tz.tzical's cache. Reported and fixed by @Unrud (gh pr #430)
- Fixed an issue with fold support on certain Python 3 implementations that
used the pre-3.6 pure Python implementation of datetime.replace, most
notably pypy3 (gh pr #446).
- Added support for VALUE=DATE-TIME for DTSTART in rrulestr. Reported by @potuz
(gh issue #401) and fixed by @Unrud (gh pr #429)
- Started enforcing that within VTIMEZONE, the VALUE parameter can only be
omitted or DATE-TIME, per RFC 5545. Reported by @Unrud (gh pr #439)
- Added support for TZID parameter for DTSTART in rrulestr. Reported and
fixed by @ryanpetrello (gh issue #614, gh pr #624)
- Added 'RRULE:' prefix to rrule strings generated by rrule.__str__, in
compliance with the RFC. Reported by @AndrewPashkin (gh issue #86), fixed by
@jarondl and @mlorant (gh pr #450)
- Switched to setuptools_scm for version management, automatically calculating
a version number from the git metadata. Reported by @jreback (gh issue #511),
implemented by @Sulley38 (gh pr #564)
- Switched setup.py to use find_packages, and started testing against pip
installed versions of dateutil in CI. Fixed issue with parser import
discovered by @jreback in pandas-dev/pandas#18141. (gh issue #507, pr #509)
- Switched test suite to using pytest (gh pr #495)
- Switched CI over to use tox. Fixed by @gaborbernat (gh pr #549)
- Added a test-only dependency on freezegun. (gh pr #474)
- Reduced number of CI builds on Appveyor. Fixed by @kirit93 (gh issue #529,
gh pr #579)
- Made xfails strict by default, so that an xpass is a failure. (gh pr #567)
- Added a documentation generation stage to tox and CI. (gh pr #568)
- Added an explicit warning when running python setup.py explaining how to run
the test suites with pytest. Fixed by @lkollar. (gh issue #544, gh pr #548)
- Added requirements-dev.txt for test dependency management (gh pr #499, #516)
- Fixed code coverage metrics to account for Windows builds (gh pr #526)
- Fixed code coverage metrics to NOT count xfails. Fixed by @gaborbernat
(gh issue #519, gh pr #563)
- Style improvement to zoneinfo.tzfile that was confusing to static type
checkers. Reported and fixed by @quodlibetor (gh pr #485)
- Several unused imports were removed by @jdufresne. (gh pr #486)
- Switched ``isinstance(*, collections.Callable)`` to callable, which is available
on all supported Python versions. Implemented by @jdufresne (gh pr #612)
- Added CONTRIBUTING.md (gh pr #533)
- Added AUTHORS.md (gh pr #542)
- Corrected setup.py metadata to reflect author vs. maintainer, (gh issue #477,
gh pr #538)
- Corrected README to reflect that tests are now run in pytest. Reported and
fixed by @m-dz (gh issue #556, gh pr #557)
- Updated all references to RFC 2445 (iCalendar) to point to RFC 5545. Fixed
by @mariocj89 (gh issue #543, gh pr #555)
- Corrected parse documentation to reflect proper integer offset units,
reported and fixed by @abrugh (gh pr #458)
- Fixed dangling parenthesis in tzoffset documentation (gh pr #461)
- Started including the license file in wheels. Reported and fixed by
@jdufresne (gh pr #476)
- Indentation fixes to parser docstring by @jbrockmendel (gh pr #492)
- Moved many examples from the "examples" documentation into their appropriate
module documentation pages. Fixed by @Tomasz-Kluczkowski and @jakec-github
(gh pr #558, #561)
- Fixed documentation so that the parser.isoparse documentation displays.
Fixed by @alexchamberlain (gh issue #545, gh pr #560)
- Refactored build and release sections and added setup instructions to
CONTRIBUTING. Reported and fixed by @kynan (gh pr #562)
- Cleaned up various dead links in the documentation. (gh pr #602, #608, #618)
Version 2.6.1
=============
- Updated zoneinfo file to 2017b. (gh pr #395)
- Added Python 3.6 to CI testing (gh pr #365)
- Removed duplicate test name that was preventing a test from being run.
Reported and fixed by @jdufresne (gh pr #371)
- Fixed testing of folds and gaps, particularly on Windows (gh pr #392)
- Fixed deprecated escape characters in regular expressions. Reported by
@nascheme and @thierryba (gh issue #361), fixed by @thierryba (gh pr #358)
- Many PEP8 style violations and other code smells were fixed by @jdufresne
(gh prs #358, #363, #364, #366, #367, #368, #372, #374, #379, #380, #398)
- Improved performance of tzutc and tzoffset objects. (gh pr #391)
- Fixed issue with several time zone classes around DST transitions in any
zones with +0 standard offset (e.g. Europe/London) (gh issue #321, pr #390)
- Fixed issue with fuzzy parsing where tokens similar to AM/PM that are in the
end skipped were dropped in the fuzzy_with_tokens list. Reported and fixed
by @jbrockmendel (gh pr #332).
- Fixed issue with parsing dates of the form X m YY. Reported by @jbrockmendel.
(gh issue #333, pr #393)
- Added support for parser weekdays with less than 3 characters. Reported by
@arcadefoam (gh issue #343), fixed by @jonemo (gh pr #382)
- Fixed issue with the addition and subtraction of certain relativedeltas.
Reported and fixed by @kootenpv (gh issue #346, pr #347)
- Fixed issue where the COUNT parameter of rrules was ignored if 0. Fixed by
@mshenfield (gh pr #330), reported by @vaultah (gh issue #329).
- Updated documentation to include the new tz methods. (gh pr #324)
- Update documentation to reflect that the parser can raise TypeError, reported
and fixed by @tomchuk (gh issue #336, pr #337)
- Fixed an incorrect year in a parser doctest. Fixed by @xlotlu (gh pr #357)
- Moved version information into _version.py and set up the versions more
granularly.
Version 2.6.0
=============
- Added PEP-495-compatible methods to address ambiguous and imaginary dates in
time zones in a backwards-compatible way. Ambiguous dates and times can now
be safely represented by all dateutil time zones. Many thanks to Alexander
Belopolski (@abalkin) and Tim Peters @tim-one for their inputs on how to
address this. Original issues reported by Yupeng and @zed (lP: 1390262,
gh issues #57, #112, #249, #284, #286, prs #127, #225, #248, #264, #302).
- Added new methods for working with ambiguous and imaginary dates to the tz
module. datetime_ambiguous() determines if a datetime is ambiguous for a given
zone and datetime_exists() determines if a datetime exists in a given zone.
This works for all fold-aware datetimes, not just those provided by dateutil.
(gh issue #253, gh pr #302)
- Fixed an issue where dst() in Portugal in 1996 was returning the wrong value
in tz.tzfile objects. Reported by @abalkin (gh issue #128, pr #225)
- Fixed an issue where zoneinfo.ZoneInfoFile errors were not being properly
deep-copied. (gh issue #226, pr #225)
- Refactored tzwin and tzrange as a subclass of a common class, tzrangebase, as
there was substantial overlapping functionality. As part of this change,
tzrange and tzstr now expose a transitions() function, which returns the
DST on and off transitions for a given year. (gh issue #260, pr #302)
- Deprecated zoneinfo.gettz() due to confusion with tz.gettz(), in favor of
get() method of zoneinfo.ZoneInfoFile objects. (gh issue #11, pr #310)
- For non-character, non-stream arguments, parser.parse now raises TypeError
instead of AttributeError. (gh issues #171, #269, pr #247)
- Fixed an issue where tzfile objects were not properly handling dst() and
tzname() when attached to datetime.time objects. Reported by @ovacephaloid.
(gh issue #292, pr #309)
- /usr/share/lib/zoneinfo was added to TZPATHS for compatibility with Solaris
systems. Reported by @dhduvall (gh issue #276, pr #307)
- tzoffset and tzrange objects now accept either a number of seconds or a
datetime.timedelta() object wherever previously only a number of seconds was
allowed. (gh pr #264, #277)
- datetime.timedelta objects can now be added to relativedelta objects. Reported
and added by Alec Nikolas Reiter (@justanr) (gh issue #282, pr #283
- Refactored relativedelta.weekday and rrule.weekday into a common base class
to reduce code duplication. (gh issue #140, pr #311)
- An issue where the WKST parameter was improperly rendering in str(rrule) was
reported and fixed by Daniel LePage (@dplepage). (gh issue #262, pr #263)
- A replace() method has been added to rrule objects by @jendas1, which creates
new rrule with modified attributes, analogous to datetime.replace (gh pr #167)
- Made some significant performance improvements to rrule objects in Python 2.x
(gh pr #245)
- All classes defining equality functions now return NotImplemented when
compared to unsupported classes, rather than raising TypeError, to allow other
classes to provide fallback support. (gh pr #236)
- Several classes have been marked as explicitly unhashable to maintain
identical behavior between Python 2 and 3. Submitted by Roy Williams
(@rowillia) (gh pr #296)
- Trailing whitespace in easter.py has been removed. Submitted by @OmgImAlexis
(gh pr #299)
- Windows-only batch files in build scripts had line endings switched to CRLF.
(gh pr #237)
- @adamchainz updated the documentation links to reflect that the canonical
location for readthedocs links is now at .io, not .org. (gh pr #272)
- Made some changes to the CI and codecov to test against newer versions of
Python and pypy, and to adjust the code coverage requirements. For the moment,
full pypy3 compatibility is not supported until a new release is available,
due to upstream bugs in the old version affecting PEP-495 support.
(gh prs #265, #266, #304, #308)
- The full PGP signing key fingerprint was added to the README.md in favor of
the previously used long-id. Reported by @valholl (gh issue #287, pr #304)
- Updated zoneinfo to 2016i. (gh issue #298, gh pr #306)
Version 2.5.3
=============
- Updated zoneinfo to 2016d
- Fixed parser bug where unambiguous datetimes fail to parse when dayfirst is
set to true. (gh issue #233, pr #234)
- Bug in zoneinfo file on platforms such as Google App Engine which do not
do not allow importing of subprocess.check_call was reported and fixed by
@savraj (gh issue #239, gh pr #240)
- Fixed incorrect version in documentation (gh issue #235, pr #243)
Version 2.5.2
=============
- Updated zoneinfo to 2016c
- Fixed parser bug where yearfirst and dayfirst parameters were not being
respected when no separator was present. (gh issue #81 and #217, pr #229)
Version 2.5.1
=============
- Updated zoneinfo to 2016b
- Changed MANIFEST.in to explicitly include test suite in source distributions,
with help from @koobs (gh issue #193, pr #194, #201, #221)
- Explicitly set all line-endings to LF, except for the NEWS file, on a
per-repository basis (gh pr #218)
- Fixed an issue with improper caching behavior in rruleset objects (gh issue
#104, pr #207)
- Changed to an explicit error when rrulestr strings contain a missing BYDAY
(gh issue #162, pr #211)
- tzfile now correctly handles files containing leapcnt (although the leapcnt
information is not actually used). Contributed by @hjoukl (gh issue #146, pr
#147)
- Fixed recursive import issue with tz module (gh pr #204)
- Added compatibility between tzwin objects and datetime.time objects (gh issue
#216, gh pr #219)
- Refactored monolithic test suite by module (gh issue #61, pr #200 and #206)
- Improved test coverage in the relativedelta module (gh pr #215)
- Adjusted documentation to reflect possibly counter-intuitive properties of
RFC-5545-compliant rrules, and other documentation improvements in the rrule
module (gh issue #105, gh issue #149 - pointer to the solution by @phep,
pr #213).
Version 2.5.0
=============
- Updated zoneinfo to 2016a
- zoneinfo_metadata file version increased to 2.0 - the updated updatezinfo.py
script will work with older zoneinfo_metadata.json files, but new metadata
files will not work with older updatezinfo.py versions. Additionally, we have
started hosting our own mirror of the Olson databases on a GitHub pages
site (https://dateutil.github.io/tzdata/) (gh pr #183)
- dateutil zoneinfo tarballs now contain the full zoneinfo_metadata file used
to generate them. (gh issue #27, gh pr #85)
- relativedelta can now be safely subclassed without derived objects reverting
to base relativedelta objects as a result of arithmetic operations.
(lp:1010199, gh issue #44, pr #49)
- relativedelta 'weeks' parameter can now be set and retrieved as a property of
relativedelta instances. (lp: 727525, gh issue #45, pr #49)
- relativedelta now explicitly supports fractional relative weeks, days, hours,
minutes and seconds. Fractional values in absolute parameters (year, day, etc)
are now deprecated. (gh issue #40, pr #190)
- relativedelta objects previously did not use microseconds to determine of two
relativedelta objects were equal. This oversight has been corrected.
Contributed by @elprans (gh pr #113)
- rrule now has an xafter() method for retrieving multiple recurrences after a
specified date. (gh pr #38)
- str(rrule) now returns an RFC2445-compliant rrule string, contributed by
@schinckel and @armicron (lp:1406305, gh issue #47, prs #50, #62 and #160)
- rrule performance under certain conditions has been significantly improved
thanks to a patch contributed by @dekoza, based on an article by Brian Beck
(@exogen) (gh pr #136)
- The use of both the 'until' and 'count' parameters is now deprecated as
inconsistent with RFC2445 (gh pr #62, #185)
- Parsing an empty string will now raise a ValueError, rather than returning the
datetime passed to the 'default' parameter. (gh issue #78, pr #187)
- tzwinlocal objects now have a meaningful repr() and str() implementation
(gh issue #148, prs #184 and #186)
- Added equality logic for tzwin and tzwinlocal objects. (gh issue #151,
pr #180, #184)
- Added some flexibility in subclassing timelex, and switched the default
behavior over to using string methods rather than comparing against a fixed
list. (gh pr #122, #139)
- An issue causing tzstr() to crash on Python 2.x was fixed. (lp: 1331576,
gh issue #51, pr #55)
- An issue with string encoding causing exceptions under certain circumstances
when tzname() is called was fixed. (gh issue #60, #74, pr #75)
- Parser issue where calling parse() on dates with no day specified when the
day of the month in the default datetime (which is "today" if unspecified) is
greater than the number of days in the parsed month was fixed (this issue
tended to crop up between the 29th and 31st of the month, for obvious reasons)
(canonical gh issue #25, pr #30, #191)
- Fixed parser issue causing fuzzy_with_tokens to raise an unexpected exception
in certain circumstances. Contributed by @MichaelAquilina (gh pr #91)
- Fixed parser issue where years > 100 AD were incorrectly parsed. Contributed
by @Bachmann1234 (gh pr #130)
- Fixed parser issue where commas were not a valid separator between seconds
and microseconds, preventing parsing of ISO 8601 dates. Contributed by
@ryanss (gh issue #28, pr #106)
- Fixed issue with tzwin encoding in locales with non-Latin alphabets
(gh issue #92, pr #98)
- Fixed an issue where tzwin was not being properly imported on Windows.
Contributed by @labrys. (gh pr #134)
- Fixed a problem causing issues importing zoneinfo in certain circumstances.
Issue and solution contributed by @alexxv (gh issue #97, pr #99)
- Fixed an issue where dateutil timezones were not compatible with basic time
objects. One of many, many timezone related issues contributed and tested by
@labrys. (gh issue #132, pr #181)
- Fixed issue where tzwinlocal had an invalid utcoffset. (gh issue #135,
pr #141, #142)
- Fixed issue with tzwin and tzwinlocal where DST transitions were incorrectly
parsed from the registry. (gh issue #143, pr #178)
- updatezinfo.py no longer suppresses certain OSErrors. Contributed by @bjamesv
(gh pr #164)
- An issue that arose when timezone locale changes during runtime has been
fixed by @carlosxl and @mjschultz (gh issue #100, prs #107, #109)
- Python 3.5 was added to the supported platforms in the metadata (@tacaswell
gh pr #159) and the test suites (@moreati gh pr #117).
- An issue with tox failing without unittest2 installed in Python 2.6 was fixed
by @moreati (gh pr #115)
- Several deprecated functions were replaced in the tests by @moreati
(gh pr #116)
- Improved the logic in Travis and Appveyor to alleviate issues where builds
were failing due to connection issues when downloading the IANA timezone
files. In addition to adding our own mirror for the files (gh pr #183), the
download is now retried a number of times (with a delay) (gh pr #177)
- Many failing doctests were fixed by @moreati. (gh pr #120)
- Many fixes to the documentation (gh pr #103, gh pr #87 from @radarhere,
gh pr #154 from @gpoesia, gh pr #156 from @awsum, gh pr #168 from @ja8zyjits)
- Added a code coverage tool to the CI to help improve the library. (gh pr #182)
- We now have a mailing list - dateutil@python.org, graciously hosted by
Python.org.
Version 2.4.2
=============
- Updated zoneinfo to 2015b.
- Fixed issue with parsing of tzstr on Python 2.7.x; tzstr will now be decoded
if not a unicode type. gh #51 (lp:1331576), gh pr #55.
- Fix a parser issue where AM and PM tokens were showing up in fuzzy date
stamps, triggering inappropriate errors. gh #56 (lp: 1428895), gh pr #63.
- Missing function "setcachesize" removed from zoneinfo __all__ list by @ryanss,
fixing an issue with wildcard imports of dateutil.zoneinfo. (gh pr #66).
- (PyPI only) Fix an issue with source distributions not including the test
suite.
Version 2.4.1
=============
- Added explicit check for valid hours if AM/PM is specified in parser.
(gh pr #22, issue #21)
- Fix bug in rrule introduced in 2.4.0 where byweekday parameter was not
handled properly. (gh pr #35, issue #34)
- Fix error where parser allowed some invalid dates, overwriting existing hours
with the last 2-digit number in the string. (gh pr #32, issue #31)
- Fix and add test for Python 2.x compatibility with boolean checking of
relativedelta objects. Implemented by @nimasmi (gh pr #43) and Cédric Krier
(lp: 1035038)
- Replaced parse() calls with explicit datetime objects in unit tests unrelated
to parser. (gh pr #36)
- Changed private _byxxx from sets to sorted tuples and fixed one currently
unreachable bug in _construct_byset. (gh pr #54)
- Additional documentation for parser (gh pr #29, #33, #41) and rrule.
- Formatting fixes to documentation of rrule and README.rst.
- Updated zoneinfo to 2015a.
Version 2.4.0
=============
- Fix an issue with relativedelta and freezegun (lp:1374022)
- Fix tzinfo in windows for timezones without dst (lp:1010050, gh #2)
- Ignore missing timezones in windows like in POSIX
- Fix minimal version requirement for six (gh #6)
- Many rrule changes and fixes by @pganssle (gh pull requests #13 #14 #17),
including defusing some infinite loops (gh #4)
Version 2.3
===========
- Cleanup directory structure, moved test.py to dateutil/tests/test.py
- Changed many aspects of dealing with the zone info file. Instead of a cache,
all the zones are loaded to memory, but symbolic links are loaded only once,
so not much memory is used.
- The package is now zip-safe, and universal-wheelable, thanks to changes in
the handling of the zoneinfo file.
- Fixed tzwin silently not imported on windows python2
- New maintainer, together with new hosting: GitHub, Travis, Read-The-Docs
Version 2.2
===========
- Updated zoneinfo to 2013h
- fuzzy_with_tokens parse addon from Christopher Corley
- Bug with LANG=C fixed by Mike Gilbert
Version 2.1
===========
- New maintainer
- Dateutil now works on Python 2.6, 2.7 and 3.2 from same codebase (with six)
- #704047: Ismael Carnales' patch for a new time format
- Small bug fixes, thanks for reporters!
Version 2.0
===========
- Ported to Python 3, by Brian Jones. If you need dateutil for Python 2.X,
please continue using the 1.X series.
- There's no such thing as a "PSF License". This source code is now
made available under the Simplified BSD license. See LICENSE for
details.
Version 1.5
===========
- As reported by Mathieu Bridon, rrules were matching the bysecond rules
incorrectly against byminute in some circumstances when the SECONDLY
frequency was in use, due to a copy & paste bug. The problem has been
unittested and corrected.
- Adam Ryan reported a problem in the relativedelta implementation which
affected the yearday parameter in the month of January specifically.
This has been unittested and fixed.
- Updated timezone information.
Version 1.4.1
=============
- Updated timezone information.
Version 1.4
===========
- Fixed another parser precision problem on conversion of decimal seconds
to microseconds, as reported by Erik Brown. Now these issues are gone
for real since it's not using floating point arithmetic anymore.
- Fixed case where tzrange.utcoffset and tzrange.dst() might fail due
to a date being used where a datetime was expected (reported and fixed
by Lennart Regebro).
- Prevent tzstr from introducing daylight timings in strings that didn't
specify them (reported by Lennart Regebro).
- Calls like gettz("GMT+3") and gettz("UTC-2") will now return the
expected values, instead of the TZ variable behavior.
- Fixed DST signal handling in zoneinfo files. Reported by
Nicholas F. Fabry and John-Mark Gurney.
Version 1.3
===========
- Fixed precision problem on conversion of decimal seconds to
microseconds, as reported by Skip Montanaro.
- Fixed bug in constructor of parser, and converted parser classes to
new-style classes. Original report and patch by Michael Elsdörfer.
- Initialize tzid and comps in tz.py, to prevent the code from ever
raising a NameError (even with broken files). Johan Dahlin suggested
the fix after a pyflakes run.
- Version is now published in dateutil.__version__, as requested
by Darren Dale.
- All code is compatible with new-style division.
Version 1.2
===========
- Now tzfile will round timezones to full-minutes if necessary,
since Python's datetime doesn't support sub-minute offsets.
Thanks to Ilpo Nyyssönen for reporting the issue.
- Removed bare string exceptions, as reported and fixed by
Wilfredo Sánchez Vega.
- Fix bug in leap count parsing (reported and fixed by Eugene Oden).
Version 1.1
===========
- Fixed rrule byyearday handling. Abramo Bagnara pointed out that
RFC2445 allows negative numbers.
- Fixed --prefix handling in setup.py (by Sidnei da Silva).
- Now tz.gettz() returns a tzlocal instance when not given any
arguments and no other timezone information is found.
- Updating timezone information to version 2005q.
Version 1.0
===========
- Fixed parsing of XXhXXm formatted time after day/month/year
has been parsed.
- Added patch by Jeffrey Harris optimizing rrule.__contains__.
Version 0.9
===========
- Fixed pickling of timezone types, as reported by
Andreas Köhler.
- Implemented internal timezone information with binary
timezone files. datautil.tz.gettz() function will now
try to use the system timezone files, and fallback to
the internal versions. It's also possible to ask for
the internal versions directly by using
dateutil.zoneinfo.gettz().
- New tzwin timezone type, allowing access to Windows
internal timezones (contributed by Jeffrey Harris).
- Fixed parsing of unicode date strings.
- Accept parserinfo instances as the parser constructor
parameter, besides parserinfo (sub)classes.
- Changed weekday to spell the not-set n value as None
instead of 0.
- Fixed other reported bugs.
Version 0.5
===========
- Removed ``FREQ_`` prefix from rrule frequency constants
WARNING: this breaks compatibility with previous versions.
- Fixed rrule.between() for cases where "after" is achieved
before even starting, as reported by Andreas Köhler.
- Fixed two digit zero-year parsing (such as 31-Dec-00), as
reported by Jim Abramson, and included test case for this.
- Sort exdate and rdate before iterating over them, so that
it's not necessary to sort them before adding to the rruleset,
as reported by Nicholas Piper.

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dateutil - powerful extensions to datetime
==========================================
|pypi| |support| |licence|
|gitter| |readthedocs|
|travis| |appveyor| |pipelines| |coverage|
.. |pypi| image:: https://img.shields.io/pypi/v/python-dateutil.svg?style=flat-square
:target: https://pypi.org/project/python-dateutil/
:alt: pypi version
.. |support| image:: https://img.shields.io/pypi/pyversions/python-dateutil.svg?style=flat-square
:target: https://pypi.org/project/python-dateutil/
:alt: supported Python version
.. |travis| image:: https://img.shields.io/travis/dateutil/dateutil/master.svg?style=flat-square&label=Travis%20Build
:target: https://travis-ci.org/dateutil/dateutil
:alt: travis build status
.. |appveyor| image:: https://img.shields.io/appveyor/ci/dateutil/dateutil/master.svg?style=flat-square&logo=appveyor
:target: https://ci.appveyor.com/project/dateutil/dateutil
:alt: appveyor build status
.. |pipelines| image:: https://dev.azure.com/pythondateutilazure/dateutil/_apis/build/status/dateutil.dateutil?branchName=master
:target: https://dev.azure.com/pythondateutilazure/dateutil/_build/latest?definitionId=1&branchName=master
:alt: azure pipelines build status
.. |coverage| image:: https://codecov.io/gh/dateutil/dateutil/branch/master/graphs/badge.svg?branch=master
:target: https://codecov.io/gh/dateutil/dateutil?branch=master
:alt: Code coverage
.. |gitter| image:: https://badges.gitter.im/dateutil/dateutil.svg
:alt: Join the chat at https://gitter.im/dateutil/dateutil
:target: https://gitter.im/dateutil/dateutil
.. |licence| image:: https://img.shields.io/pypi/l/python-dateutil.svg?style=flat-square
:target: https://pypi.org/project/python-dateutil/
:alt: licence
.. |readthedocs| image:: https://img.shields.io/readthedocs/dateutil/latest.svg?style=flat-square&label=Read%20the%20Docs
:alt: Read the documentation at https://dateutil.readthedocs.io/en/latest/
:target: https://dateutil.readthedocs.io/en/latest/
The `dateutil` module provides powerful extensions to
the standard `datetime` module, available in Python.
Installation
============
`dateutil` can be installed from PyPI using `pip` (note that the package name is
different from the importable name)::
pip install python-dateutil
Download
========
dateutil is available on PyPI
https://pypi.org/project/python-dateutil/
The documentation is hosted at:
https://dateutil.readthedocs.io/en/stable/
Code
====
The code and issue tracker are hosted on GitHub:
https://github.com/dateutil/dateutil/
Features
========
* Computing of relative deltas (next month, next year,
next Monday, last week of month, etc);
* Computing of relative deltas between two given
date and/or datetime objects;
* Computing of dates based on very flexible recurrence rules,
using a superset of the `iCalendar <https://www.ietf.org/rfc/rfc2445.txt>`_
specification. Parsing of RFC strings is supported as well.
* Generic parsing of dates in almost any string format;
* Timezone (tzinfo) implementations for tzfile(5) format
files (/etc/localtime, /usr/share/zoneinfo, etc), TZ
environment string (in all known formats), iCalendar
format files, given ranges (with help from relative deltas),
local machine timezone, fixed offset timezone, UTC timezone,
and Windows registry-based time zones.
* Internal up-to-date world timezone information based on
Olson's database.
* Computing of Easter Sunday dates for any given year,
using Western, Orthodox or Julian algorithms;
* A comprehensive test suite.
Quick example
=============
Here's a snapshot, just to give an idea about the power of the
package. For more examples, look at the documentation.
Suppose you want to know how much time is left, in
years/months/days/etc, before the next easter happening on a
year with a Friday 13th in August, and you want to get today's
date out of the "date" unix system command. Here is the code:
.. doctest:: readmeexample
>>> from dateutil.relativedelta import *
>>> from dateutil.easter import *
>>> from dateutil.rrule import *
>>> from dateutil.parser import *
>>> from datetime import *
>>> now = parse("Sat Oct 11 17:13:46 UTC 2003")
>>> today = now.date()
>>> year = rrule(YEARLY,dtstart=now,bymonth=8,bymonthday=13,byweekday=FR)[0].year
>>> rdelta = relativedelta(easter(year), today)
>>> print("Today is: %s" % today)
Today is: 2003-10-11
>>> print("Year with next Aug 13th on a Friday is: %s" % year)
Year with next Aug 13th on a Friday is: 2004
>>> print("How far is the Easter of that year: %s" % rdelta)
How far is the Easter of that year: relativedelta(months=+6)
>>> print("And the Easter of that year is: %s" % (today+rdelta))
And the Easter of that year is: 2004-04-11
Being exactly 6 months ahead was **really** a coincidence :)
Contributing
============
We welcome many types of contributions - bug reports, pull requests (code, infrastructure or documentation fixes). For more information about how to contribute to the project, see the ``CONTRIBUTING.md`` file in the repository.
Author
======
The dateutil module was written by Gustavo Niemeyer <gustavo@niemeyer.net>
in 2003.
It is maintained by:
* Gustavo Niemeyer <gustavo@niemeyer.net> 2003-2011
* Tomi Pieviläinen <tomi.pievilainen@iki.fi> 2012-2014
* Yaron de Leeuw <me@jarondl.net> 2014-2016
* Paul Ganssle <paul@ganssle.io> 2015-
Starting with version 2.4.1 and running until 2.8.2, all source and binary
distributions will be signed by a PGP key that has, at the very least, been
signed by the key which made the previous release. A table of release signing
keys can be found below:
=========== ============================
Releases Signing key fingerprint
=========== ============================
2.4.1-2.8.2 `6B49 ACBA DCF6 BD1C A206 67AB CD54 FCE3 D964 BEFB`_
=========== ============================
New releases *may* have signed tags, but binary and source distributions
uploaded to PyPI will no longer have GPG signatures attached.
Contact
=======
Our mailing list is available at `dateutil@python.org <https://mail.python.org/mailman/listinfo/dateutil>`_. As it is hosted by the PSF, it is subject to the `PSF code of
conduct <https://www.python.org/psf/conduct/>`_.
License
=======
All contributions after December 1, 2017 released under dual license - either `Apache 2.0 License <https://www.apache.org/licenses/LICENSE-2.0>`_ or the `BSD 3-Clause License <https://opensource.org/licenses/BSD-3-Clause>`_. Contributions before December 1, 2017 - except those those explicitly relicensed - are released only under the BSD 3-Clause License.
.. _6B49 ACBA DCF6 BD1C A206 67AB CD54 FCE3 D964 BEFB:
https://pgp.mit.edu/pks/lookup?op=vindex&search=0xCD54FCE3D964BEFB

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# -*- coding: utf-8 -*-
try:
from ._version import version as __version__
except ImportError:
__version__ = 'unknown'
__all__ = ['easter', 'parser', 'relativedelta', 'rrule', 'tz',
'utils', 'zoneinfo']

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"""
Common code used in multiple modules.
"""
class weekday(object):
__slots__ = ["weekday", "n"]
def __init__(self, weekday, n=None):
self.weekday = weekday
self.n = n
def __call__(self, n):
if n == self.n:
return self
else:
return self.__class__(self.weekday, n)
def __eq__(self, other):
try:
if self.weekday != other.weekday or self.n != other.n:
return False
except AttributeError:
return False
return True
def __hash__(self):
return hash((
self.weekday,
self.n,
))
def __ne__(self, other):
return not (self == other)
def __repr__(self):
s = ("MO", "TU", "WE", "TH", "FR", "SA", "SU")[self.weekday]
if not self.n:
return s
else:
return "%s(%+d)" % (s, self.n)
# vim:ts=4:sw=4:et

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# -*- coding: utf-8 -*-
"""
This module offers a generic Easter computing method for any given year, using
Western, Orthodox or Julian algorithms.
"""
import datetime
__all__ = ["easter", "EASTER_JULIAN", "EASTER_ORTHODOX", "EASTER_WESTERN"]
EASTER_JULIAN = 1
EASTER_ORTHODOX = 2
EASTER_WESTERN = 3
def easter(year, method=EASTER_WESTERN):
"""
This method was ported from the work done by GM Arts,
on top of the algorithm by Claus Tondering, which was
based in part on the algorithm of Ouding (1940), as
quoted in "Explanatory Supplement to the Astronomical
Almanac", P. Kenneth Seidelmann, editor.
This algorithm implements three different Easter
calculation methods:
1. Original calculation in Julian calendar, valid in
dates after 326 AD
2. Original method, with date converted to Gregorian
calendar, valid in years 1583 to 4099
3. Revised method, in Gregorian calendar, valid in
years 1583 to 4099 as well
These methods are represented by the constants:
* ``EASTER_JULIAN = 1``
* ``EASTER_ORTHODOX = 2``
* ``EASTER_WESTERN = 3``
The default method is method 3.
More about the algorithm may be found at:
`GM Arts: Easter Algorithms <http://www.gmarts.org/index.php?go=415>`_
and
`The Calendar FAQ: Easter <https://www.tondering.dk/claus/cal/easter.php>`_
"""
if not (1 <= method <= 3):
raise ValueError("invalid method")
# g - Golden year - 1
# c - Century
# h - (23 - Epact) mod 30
# i - Number of days from March 21 to Paschal Full Moon
# j - Weekday for PFM (0=Sunday, etc)
# p - Number of days from March 21 to Sunday on or before PFM
# (-6 to 28 methods 1 & 3, to 56 for method 2)
# e - Extra days to add for method 2 (converting Julian
# date to Gregorian date)
y = year
g = y % 19
e = 0
if method < 3:
# Old method
i = (19*g + 15) % 30
j = (y + y//4 + i) % 7
if method == 2:
# Extra dates to convert Julian to Gregorian date
e = 10
if y > 1600:
e = e + y//100 - 16 - (y//100 - 16)//4
else:
# New method
c = y//100
h = (c - c//4 - (8*c + 13)//25 + 19*g + 15) % 30
i = h - (h//28)*(1 - (h//28)*(29//(h + 1))*((21 - g)//11))
j = (y + y//4 + i + 2 - c + c//4) % 7
# p can be from -6 to 56 corresponding to dates 22 March to 23 May
# (later dates apply to method 2, although 23 May never actually occurs)
p = i - j + e
d = 1 + (p + 27 + (p + 6)//40) % 31
m = 3 + (p + 26)//30
return datetime.date(int(y), int(m), int(d))

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# -*- coding: utf-8 -*-
from ._parser import parse, parser, parserinfo, ParserError
from ._parser import DEFAULTPARSER, DEFAULTTZPARSER
from ._parser import UnknownTimezoneWarning
from ._parser import __doc__
from .isoparser import isoparser, isoparse
__all__ = ['parse', 'parser', 'parserinfo',
'isoparse', 'isoparser',
'ParserError',
'UnknownTimezoneWarning']
###
# Deprecate portions of the private interface so that downstream code that
# is improperly relying on it is given *some* notice.
def __deprecated_private_func(f):
from functools import wraps
import warnings
msg = ('{name} is a private function and may break without warning, '
'it will be moved and or renamed in future versions.')
msg = msg.format(name=f.__name__)
@wraps(f)
def deprecated_func(*args, **kwargs):
warnings.warn(msg, DeprecationWarning)
return f(*args, **kwargs)
return deprecated_func
def __deprecate_private_class(c):
import warnings
msg = ('{name} is a private class and may break without warning, '
'it will be moved and or renamed in future versions.')
msg = msg.format(name=c.__name__)
class private_class(c):
__doc__ = c.__doc__
def __init__(self, *args, **kwargs):
warnings.warn(msg, DeprecationWarning)
super(private_class, self).__init__(*args, **kwargs)
private_class.__name__ = c.__name__
return private_class
from ._parser import _timelex, _resultbase
from ._parser import _tzparser, _parsetz
_timelex = __deprecate_private_class(_timelex)
_tzparser = __deprecate_private_class(_tzparser)
_resultbase = __deprecate_private_class(_resultbase)
_parsetz = __deprecated_private_func(_parsetz)

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# -*- coding: utf-8 -*-
"""
This module offers a parser for ISO-8601 strings
It is intended to support all valid date, time and datetime formats per the
ISO-8601 specification.
..versionadded:: 2.7.0
"""
from datetime import datetime, timedelta, time, date
import calendar
from dateutil import tz
from functools import wraps
import re
import six
__all__ = ["isoparse", "isoparser"]
def _takes_ascii(f):
@wraps(f)
def func(self, str_in, *args, **kwargs):
# If it's a stream, read the whole thing
str_in = getattr(str_in, 'read', lambda: str_in)()
# If it's unicode, turn it into bytes, since ISO-8601 only covers ASCII
if isinstance(str_in, six.text_type):
# ASCII is the same in UTF-8
try:
str_in = str_in.encode('ascii')
except UnicodeEncodeError as e:
msg = 'ISO-8601 strings should contain only ASCII characters'
six.raise_from(ValueError(msg), e)
return f(self, str_in, *args, **kwargs)
return func
class isoparser(object):
def __init__(self, sep=None):
"""
:param sep:
A single character that separates date and time portions. If
``None``, the parser will accept any single character.
For strict ISO-8601 adherence, pass ``'T'``.
"""
if sep is not None:
if (len(sep) != 1 or ord(sep) >= 128 or sep in '0123456789'):
raise ValueError('Separator must be a single, non-numeric ' +
'ASCII character')
sep = sep.encode('ascii')
self._sep = sep
@_takes_ascii
def isoparse(self, dt_str):
"""
Parse an ISO-8601 datetime string into a :class:`datetime.datetime`.
An ISO-8601 datetime string consists of a date portion, followed
optionally by a time portion - the date and time portions are separated
by a single character separator, which is ``T`` in the official
standard. Incomplete date formats (such as ``YYYY-MM``) may *not* be
combined with a time portion.
Supported date formats are:
Common:
- ``YYYY``
- ``YYYY-MM`` or ``YYYYMM``
- ``YYYY-MM-DD`` or ``YYYYMMDD``
Uncommon:
- ``YYYY-Www`` or ``YYYYWww`` - ISO week (day defaults to 0)
- ``YYYY-Www-D`` or ``YYYYWwwD`` - ISO week and day
The ISO week and day numbering follows the same logic as
:func:`datetime.date.isocalendar`.
Supported time formats are:
- ``hh``
- ``hh:mm`` or ``hhmm``
- ``hh:mm:ss`` or ``hhmmss``
- ``hh:mm:ss.ssssss`` (Up to 6 sub-second digits)
Midnight is a special case for `hh`, as the standard supports both
00:00 and 24:00 as a representation. The decimal separator can be
either a dot or a comma.
.. caution::
Support for fractional components other than seconds is part of the
ISO-8601 standard, but is not currently implemented in this parser.
Supported time zone offset formats are:
- `Z` (UTC)
- `±HH:MM`
- `±HHMM`
- `±HH`
Offsets will be represented as :class:`dateutil.tz.tzoffset` objects,
with the exception of UTC, which will be represented as
:class:`dateutil.tz.tzutc`. Time zone offsets equivalent to UTC (such
as `+00:00`) will also be represented as :class:`dateutil.tz.tzutc`.
:param dt_str:
A string or stream containing only an ISO-8601 datetime string
:return:
Returns a :class:`datetime.datetime` representing the string.
Unspecified components default to their lowest value.
.. warning::
As of version 2.7.0, the strictness of the parser should not be
considered a stable part of the contract. Any valid ISO-8601 string
that parses correctly with the default settings will continue to
parse correctly in future versions, but invalid strings that
currently fail (e.g. ``2017-01-01T00:00+00:00:00``) are not
guaranteed to continue failing in future versions if they encode
a valid date.
.. versionadded:: 2.7.0
"""
components, pos = self._parse_isodate(dt_str)
if len(dt_str) > pos:
if self._sep is None or dt_str[pos:pos + 1] == self._sep:
components += self._parse_isotime(dt_str[pos + 1:])
else:
raise ValueError('String contains unknown ISO components')
if len(components) > 3 and components[3] == 24:
components[3] = 0
return datetime(*components) + timedelta(days=1)
return datetime(*components)
@_takes_ascii
def parse_isodate(self, datestr):
"""
Parse the date portion of an ISO string.
:param datestr:
The string portion of an ISO string, without a separator
:return:
Returns a :class:`datetime.date` object
"""
components, pos = self._parse_isodate(datestr)
if pos < len(datestr):
raise ValueError('String contains unknown ISO ' +
'components: {!r}'.format(datestr.decode('ascii')))
return date(*components)
@_takes_ascii
def parse_isotime(self, timestr):
"""
Parse the time portion of an ISO string.
:param timestr:
The time portion of an ISO string, without a separator
:return:
Returns a :class:`datetime.time` object
"""
components = self._parse_isotime(timestr)
if components[0] == 24:
components[0] = 0
return time(*components)
@_takes_ascii
def parse_tzstr(self, tzstr, zero_as_utc=True):
"""
Parse a valid ISO time zone string.
See :func:`isoparser.isoparse` for details on supported formats.
:param tzstr:
A string representing an ISO time zone offset
:param zero_as_utc:
Whether to return :class:`dateutil.tz.tzutc` for zero-offset zones
:return:
Returns :class:`dateutil.tz.tzoffset` for offsets and
:class:`dateutil.tz.tzutc` for ``Z`` and (if ``zero_as_utc`` is
specified) offsets equivalent to UTC.
"""
return self._parse_tzstr(tzstr, zero_as_utc=zero_as_utc)
# Constants
_DATE_SEP = b'-'
_TIME_SEP = b':'
_FRACTION_REGEX = re.compile(b'[\\.,]([0-9]+)')
def _parse_isodate(self, dt_str):
try:
return self._parse_isodate_common(dt_str)
except ValueError:
return self._parse_isodate_uncommon(dt_str)
def _parse_isodate_common(self, dt_str):
len_str = len(dt_str)
components = [1, 1, 1]
if len_str < 4:
raise ValueError('ISO string too short')
# Year
components[0] = int(dt_str[0:4])
pos = 4
if pos >= len_str:
return components, pos
has_sep = dt_str[pos:pos + 1] == self._DATE_SEP
if has_sep:
pos += 1
# Month
if len_str - pos < 2:
raise ValueError('Invalid common month')
components[1] = int(dt_str[pos:pos + 2])
pos += 2
if pos >= len_str:
if has_sep:
return components, pos
else:
raise ValueError('Invalid ISO format')
if has_sep:
if dt_str[pos:pos + 1] != self._DATE_SEP:
raise ValueError('Invalid separator in ISO string')
pos += 1
# Day
if len_str - pos < 2:
raise ValueError('Invalid common day')
components[2] = int(dt_str[pos:pos + 2])
return components, pos + 2
def _parse_isodate_uncommon(self, dt_str):
if len(dt_str) < 4:
raise ValueError('ISO string too short')
# All ISO formats start with the year
year = int(dt_str[0:4])
has_sep = dt_str[4:5] == self._DATE_SEP
pos = 4 + has_sep # Skip '-' if it's there
if dt_str[pos:pos + 1] == b'W':
# YYYY-?Www-?D?
pos += 1
weekno = int(dt_str[pos:pos + 2])
pos += 2
dayno = 1
if len(dt_str) > pos:
if (dt_str[pos:pos + 1] == self._DATE_SEP) != has_sep:
raise ValueError('Inconsistent use of dash separator')
pos += has_sep
dayno = int(dt_str[pos:pos + 1])
pos += 1
base_date = self._calculate_weekdate(year, weekno, dayno)
else:
# YYYYDDD or YYYY-DDD
if len(dt_str) - pos < 3:
raise ValueError('Invalid ordinal day')
ordinal_day = int(dt_str[pos:pos + 3])
pos += 3
if ordinal_day < 1 or ordinal_day > (365 + calendar.isleap(year)):
raise ValueError('Invalid ordinal day' +
' {} for year {}'.format(ordinal_day, year))
base_date = date(year, 1, 1) + timedelta(days=ordinal_day - 1)
components = [base_date.year, base_date.month, base_date.day]
return components, pos
def _calculate_weekdate(self, year, week, day):
"""
Calculate the day of corresponding to the ISO year-week-day calendar.
This function is effectively the inverse of
:func:`datetime.date.isocalendar`.
:param year:
The year in the ISO calendar
:param week:
The week in the ISO calendar - range is [1, 53]
:param day:
The day in the ISO calendar - range is [1 (MON), 7 (SUN)]
:return:
Returns a :class:`datetime.date`
"""
if not 0 < week < 54:
raise ValueError('Invalid week: {}'.format(week))
if not 0 < day < 8: # Range is 1-7
raise ValueError('Invalid weekday: {}'.format(day))
# Get week 1 for the specific year:
jan_4 = date(year, 1, 4) # Week 1 always has January 4th in it
week_1 = jan_4 - timedelta(days=jan_4.isocalendar()[2] - 1)
# Now add the specific number of weeks and days to get what we want
week_offset = (week - 1) * 7 + (day - 1)
return week_1 + timedelta(days=week_offset)
def _parse_isotime(self, timestr):
len_str = len(timestr)
components = [0, 0, 0, 0, None]
pos = 0
comp = -1
if len_str < 2:
raise ValueError('ISO time too short')
has_sep = False
while pos < len_str and comp < 5:
comp += 1
if timestr[pos:pos + 1] in b'-+Zz':
# Detect time zone boundary
components[-1] = self._parse_tzstr(timestr[pos:])
pos = len_str
break
if comp == 1 and timestr[pos:pos+1] == self._TIME_SEP:
has_sep = True
pos += 1
elif comp == 2 and has_sep:
if timestr[pos:pos+1] != self._TIME_SEP:
raise ValueError('Inconsistent use of colon separator')
pos += 1
if comp < 3:
# Hour, minute, second
components[comp] = int(timestr[pos:pos + 2])
pos += 2
if comp == 3:
# Fraction of a second
frac = self._FRACTION_REGEX.match(timestr[pos:])
if not frac:
continue
us_str = frac.group(1)[:6] # Truncate to microseconds
components[comp] = int(us_str) * 10**(6 - len(us_str))
pos += len(frac.group())
if pos < len_str:
raise ValueError('Unused components in ISO string')
if components[0] == 24:
# Standard supports 00:00 and 24:00 as representations of midnight
if any(component != 0 for component in components[1:4]):
raise ValueError('Hour may only be 24 at 24:00:00.000')
return components
def _parse_tzstr(self, tzstr, zero_as_utc=True):
if tzstr == b'Z' or tzstr == b'z':
return tz.UTC
if len(tzstr) not in {3, 5, 6}:
raise ValueError('Time zone offset must be 1, 3, 5 or 6 characters')
if tzstr[0:1] == b'-':
mult = -1
elif tzstr[0:1] == b'+':
mult = 1
else:
raise ValueError('Time zone offset requires sign')
hours = int(tzstr[1:3])
if len(tzstr) == 3:
minutes = 0
else:
minutes = int(tzstr[(4 if tzstr[3:4] == self._TIME_SEP else 3):])
if zero_as_utc and hours == 0 and minutes == 0:
return tz.UTC
else:
if minutes > 59:
raise ValueError('Invalid minutes in time zone offset')
if hours > 23:
raise ValueError('Invalid hours in time zone offset')
return tz.tzoffset(None, mult * (hours * 60 + minutes) * 60)
DEFAULT_ISOPARSER = isoparser()
isoparse = DEFAULT_ISOPARSER.isoparse

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# -*- coding: utf-8 -*-
import datetime
import calendar
import operator
from math import copysign
from six import integer_types
from warnings import warn
from ._common import weekday
MO, TU, WE, TH, FR, SA, SU = weekdays = tuple(weekday(x) for x in range(7))
__all__ = ["relativedelta", "MO", "TU", "WE", "TH", "FR", "SA", "SU"]
class relativedelta(object):
"""
The relativedelta type is designed to be applied to an existing datetime and
can replace specific components of that datetime, or represents an interval
of time.
It is based on the specification of the excellent work done by M.-A. Lemburg
in his
`mx.DateTime <https://www.egenix.com/products/python/mxBase/mxDateTime/>`_ extension.
However, notice that this type does *NOT* implement the same algorithm as
his work. Do *NOT* expect it to behave like mx.DateTime's counterpart.
There are two different ways to build a relativedelta instance. The
first one is passing it two date/datetime classes::
relativedelta(datetime1, datetime2)
The second one is passing it any number of the following keyword arguments::
relativedelta(arg1=x,arg2=y,arg3=z...)
year, month, day, hour, minute, second, microsecond:
Absolute information (argument is singular); adding or subtracting a
relativedelta with absolute information does not perform an arithmetic
operation, but rather REPLACES the corresponding value in the
original datetime with the value(s) in relativedelta.
years, months, weeks, days, hours, minutes, seconds, microseconds:
Relative information, may be negative (argument is plural); adding
or subtracting a relativedelta with relative information performs
the corresponding arithmetic operation on the original datetime value
with the information in the relativedelta.
weekday:
One of the weekday instances (MO, TU, etc) available in the
relativedelta module. These instances may receive a parameter N,
specifying the Nth weekday, which could be positive or negative
(like MO(+1) or MO(-2)). Not specifying it is the same as specifying
+1. You can also use an integer, where 0=MO. This argument is always
relative e.g. if the calculated date is already Monday, using MO(1)
or MO(-1) won't change the day. To effectively make it absolute, use
it in combination with the day argument (e.g. day=1, MO(1) for first
Monday of the month).
leapdays:
Will add given days to the date found, if year is a leap
year, and the date found is post 28 of february.
yearday, nlyearday:
Set the yearday or the non-leap year day (jump leap days).
These are converted to day/month/leapdays information.
There are relative and absolute forms of the keyword
arguments. The plural is relative, and the singular is
absolute. For each argument in the order below, the absolute form
is applied first (by setting each attribute to that value) and
then the relative form (by adding the value to the attribute).
The order of attributes considered when this relativedelta is
added to a datetime is:
1. Year
2. Month
3. Day
4. Hours
5. Minutes
6. Seconds
7. Microseconds
Finally, weekday is applied, using the rule described above.
For example
>>> from datetime import datetime
>>> from dateutil.relativedelta import relativedelta, MO
>>> dt = datetime(2018, 4, 9, 13, 37, 0)
>>> delta = relativedelta(hours=25, day=1, weekday=MO(1))
>>> dt + delta
datetime.datetime(2018, 4, 2, 14, 37)
First, the day is set to 1 (the first of the month), then 25 hours
are added, to get to the 2nd day and 14th hour, finally the
weekday is applied, but since the 2nd is already a Monday there is
no effect.
"""
def __init__(self, dt1=None, dt2=None,
years=0, months=0, days=0, leapdays=0, weeks=0,
hours=0, minutes=0, seconds=0, microseconds=0,
year=None, month=None, day=None, weekday=None,
yearday=None, nlyearday=None,
hour=None, minute=None, second=None, microsecond=None):
if dt1 and dt2:
# datetime is a subclass of date. So both must be date
if not (isinstance(dt1, datetime.date) and
isinstance(dt2, datetime.date)):
raise TypeError("relativedelta only diffs datetime/date")
# We allow two dates, or two datetimes, so we coerce them to be
# of the same type
if (isinstance(dt1, datetime.datetime) !=
isinstance(dt2, datetime.datetime)):
if not isinstance(dt1, datetime.datetime):
dt1 = datetime.datetime.fromordinal(dt1.toordinal())
elif not isinstance(dt2, datetime.datetime):
dt2 = datetime.datetime.fromordinal(dt2.toordinal())
self.years = 0
self.months = 0
self.days = 0
self.leapdays = 0
self.hours = 0
self.minutes = 0
self.seconds = 0
self.microseconds = 0
self.year = None
self.month = None
self.day = None
self.weekday = None
self.hour = None
self.minute = None
self.second = None
self.microsecond = None
self._has_time = 0
# Get year / month delta between the two
months = (dt1.year - dt2.year) * 12 + (dt1.month - dt2.month)
self._set_months(months)
# Remove the year/month delta so the timedelta is just well-defined
# time units (seconds, days and microseconds)
dtm = self.__radd__(dt2)
# If we've overshot our target, make an adjustment
if dt1 < dt2:
compare = operator.gt
increment = 1
else:
compare = operator.lt
increment = -1
while compare(dt1, dtm):
months += increment
self._set_months(months)
dtm = self.__radd__(dt2)
# Get the timedelta between the "months-adjusted" date and dt1
delta = dt1 - dtm
self.seconds = delta.seconds + delta.days * 86400
self.microseconds = delta.microseconds
else:
# Check for non-integer values in integer-only quantities
if any(x is not None and x != int(x) for x in (years, months)):
raise ValueError("Non-integer years and months are "
"ambiguous and not currently supported.")
# Relative information
self.years = int(years)
self.months = int(months)
self.days = days + weeks * 7
self.leapdays = leapdays
self.hours = hours
self.minutes = minutes
self.seconds = seconds
self.microseconds = microseconds
# Absolute information
self.year = year
self.month = month
self.day = day
self.hour = hour
self.minute = minute
self.second = second
self.microsecond = microsecond
if any(x is not None and int(x) != x
for x in (year, month, day, hour,
minute, second, microsecond)):
# For now we'll deprecate floats - later it'll be an error.
warn("Non-integer value passed as absolute information. " +
"This is not a well-defined condition and will raise " +
"errors in future versions.", DeprecationWarning)
if isinstance(weekday, integer_types):
self.weekday = weekdays[weekday]
else:
self.weekday = weekday
yday = 0
if nlyearday:
yday = nlyearday
elif yearday:
yday = yearday
if yearday > 59:
self.leapdays = -1
if yday:
ydayidx = [31, 59, 90, 120, 151, 181, 212,
243, 273, 304, 334, 366]
for idx, ydays in enumerate(ydayidx):
if yday <= ydays:
self.month = idx+1
if idx == 0:
self.day = yday
else:
self.day = yday-ydayidx[idx-1]
break
else:
raise ValueError("invalid year day (%d)" % yday)
self._fix()
def _fix(self):
if abs(self.microseconds) > 999999:
s = _sign(self.microseconds)
div, mod = divmod(self.microseconds * s, 1000000)
self.microseconds = mod * s
self.seconds += div * s
if abs(self.seconds) > 59:
s = _sign(self.seconds)
div, mod = divmod(self.seconds * s, 60)
self.seconds = mod * s
self.minutes += div * s
if abs(self.minutes) > 59:
s = _sign(self.minutes)
div, mod = divmod(self.minutes * s, 60)
self.minutes = mod * s
self.hours += div * s
if abs(self.hours) > 23:
s = _sign(self.hours)
div, mod = divmod(self.hours * s, 24)
self.hours = mod * s
self.days += div * s
if abs(self.months) > 11:
s = _sign(self.months)
div, mod = divmod(self.months * s, 12)
self.months = mod * s
self.years += div * s
if (self.hours or self.minutes or self.seconds or self.microseconds
or self.hour is not None or self.minute is not None or
self.second is not None or self.microsecond is not None):
self._has_time = 1
else:
self._has_time = 0
@property
def weeks(self):
return int(self.days / 7.0)
@weeks.setter
def weeks(self, value):
self.days = self.days - (self.weeks * 7) + value * 7
def _set_months(self, months):
self.months = months
if abs(self.months) > 11:
s = _sign(self.months)
div, mod = divmod(self.months * s, 12)
self.months = mod * s
self.years = div * s
else:
self.years = 0
def normalized(self):
"""
Return a version of this object represented entirely using integer
values for the relative attributes.
>>> relativedelta(days=1.5, hours=2).normalized()
relativedelta(days=+1, hours=+14)
:return:
Returns a :class:`dateutil.relativedelta.relativedelta` object.
"""
# Cascade remainders down (rounding each to roughly nearest microsecond)
days = int(self.days)
hours_f = round(self.hours + 24 * (self.days - days), 11)
hours = int(hours_f)
minutes_f = round(self.minutes + 60 * (hours_f - hours), 10)
minutes = int(minutes_f)
seconds_f = round(self.seconds + 60 * (minutes_f - minutes), 8)
seconds = int(seconds_f)
microseconds = round(self.microseconds + 1e6 * (seconds_f - seconds))
# Constructor carries overflow back up with call to _fix()
return self.__class__(years=self.years, months=self.months,
days=days, hours=hours, minutes=minutes,
seconds=seconds, microseconds=microseconds,
leapdays=self.leapdays, year=self.year,
month=self.month, day=self.day,
weekday=self.weekday, hour=self.hour,
minute=self.minute, second=self.second,
microsecond=self.microsecond)
def __add__(self, other):
if isinstance(other, relativedelta):
return self.__class__(years=other.years + self.years,
months=other.months + self.months,
days=other.days + self.days,
hours=other.hours + self.hours,
minutes=other.minutes + self.minutes,
seconds=other.seconds + self.seconds,
microseconds=(other.microseconds +
self.microseconds),
leapdays=other.leapdays or self.leapdays,
year=(other.year if other.year is not None
else self.year),
month=(other.month if other.month is not None
else self.month),
day=(other.day if other.day is not None
else self.day),
weekday=(other.weekday if other.weekday is not None
else self.weekday),
hour=(other.hour if other.hour is not None
else self.hour),
minute=(other.minute if other.minute is not None
else self.minute),
second=(other.second if other.second is not None
else self.second),
microsecond=(other.microsecond if other.microsecond
is not None else
self.microsecond))
if isinstance(other, datetime.timedelta):
return self.__class__(years=self.years,
months=self.months,
days=self.days + other.days,
hours=self.hours,
minutes=self.minutes,
seconds=self.seconds + other.seconds,
microseconds=self.microseconds + other.microseconds,
leapdays=self.leapdays,
year=self.year,
month=self.month,
day=self.day,
weekday=self.weekday,
hour=self.hour,
minute=self.minute,
second=self.second,
microsecond=self.microsecond)
if not isinstance(other, datetime.date):
return NotImplemented
elif self._has_time and not isinstance(other, datetime.datetime):
other = datetime.datetime.fromordinal(other.toordinal())
year = (self.year or other.year)+self.years
month = self.month or other.month
if self.months:
assert 1 <= abs(self.months) <= 12
month += self.months
if month > 12:
year += 1
month -= 12
elif month < 1:
year -= 1
month += 12
day = min(calendar.monthrange(year, month)[1],
self.day or other.day)
repl = {"year": year, "month": month, "day": day}
for attr in ["hour", "minute", "second", "microsecond"]:
value = getattr(self, attr)
if value is not None:
repl[attr] = value
days = self.days
if self.leapdays and month > 2 and calendar.isleap(year):
days += self.leapdays
ret = (other.replace(**repl)
+ datetime.timedelta(days=days,
hours=self.hours,
minutes=self.minutes,
seconds=self.seconds,
microseconds=self.microseconds))
if self.weekday:
weekday, nth = self.weekday.weekday, self.weekday.n or 1
jumpdays = (abs(nth) - 1) * 7
if nth > 0:
jumpdays += (7 - ret.weekday() + weekday) % 7
else:
jumpdays += (ret.weekday() - weekday) % 7
jumpdays *= -1
ret += datetime.timedelta(days=jumpdays)
return ret
def __radd__(self, other):
return self.__add__(other)
def __rsub__(self, other):
return self.__neg__().__radd__(other)
def __sub__(self, other):
if not isinstance(other, relativedelta):
return NotImplemented # In case the other object defines __rsub__
return self.__class__(years=self.years - other.years,
months=self.months - other.months,
days=self.days - other.days,
hours=self.hours - other.hours,
minutes=self.minutes - other.minutes,
seconds=self.seconds - other.seconds,
microseconds=self.microseconds - other.microseconds,
leapdays=self.leapdays or other.leapdays,
year=(self.year if self.year is not None
else other.year),
month=(self.month if self.month is not None else
other.month),
day=(self.day if self.day is not None else
other.day),
weekday=(self.weekday if self.weekday is not None else
other.weekday),
hour=(self.hour if self.hour is not None else
other.hour),
minute=(self.minute if self.minute is not None else
other.minute),
second=(self.second if self.second is not None else
other.second),
microsecond=(self.microsecond if self.microsecond
is not None else
other.microsecond))
def __abs__(self):
return self.__class__(years=abs(self.years),
months=abs(self.months),
days=abs(self.days),
hours=abs(self.hours),
minutes=abs(self.minutes),
seconds=abs(self.seconds),
microseconds=abs(self.microseconds),
leapdays=self.leapdays,
year=self.year,
month=self.month,
day=self.day,
weekday=self.weekday,
hour=self.hour,
minute=self.minute,
second=self.second,
microsecond=self.microsecond)
def __neg__(self):
return self.__class__(years=-self.years,
months=-self.months,
days=-self.days,
hours=-self.hours,
minutes=-self.minutes,
seconds=-self.seconds,
microseconds=-self.microseconds,
leapdays=self.leapdays,
year=self.year,
month=self.month,
day=self.day,
weekday=self.weekday,
hour=self.hour,
minute=self.minute,
second=self.second,
microsecond=self.microsecond)
def __bool__(self):
return not (not self.years and
not self.months and
not self.days and
not self.hours and
not self.minutes and
not self.seconds and
not self.microseconds and
not self.leapdays and
self.year is None and
self.month is None and
self.day is None and
self.weekday is None and
self.hour is None and
self.minute is None and
self.second is None and
self.microsecond is None)
# Compatibility with Python 2.x
__nonzero__ = __bool__
def __mul__(self, other):
try:
f = float(other)
except TypeError:
return NotImplemented
return self.__class__(years=int(self.years * f),
months=int(self.months * f),
days=int(self.days * f),
hours=int(self.hours * f),
minutes=int(self.minutes * f),
seconds=int(self.seconds * f),
microseconds=int(self.microseconds * f),
leapdays=self.leapdays,
year=self.year,
month=self.month,
day=self.day,
weekday=self.weekday,
hour=self.hour,
minute=self.minute,
second=self.second,
microsecond=self.microsecond)
__rmul__ = __mul__
def __eq__(self, other):
if not isinstance(other, relativedelta):
return NotImplemented
if self.weekday or other.weekday:
if not self.weekday or not other.weekday:
return False
if self.weekday.weekday != other.weekday.weekday:
return False
n1, n2 = self.weekday.n, other.weekday.n
if n1 != n2 and not ((not n1 or n1 == 1) and (not n2 or n2 == 1)):
return False
return (self.years == other.years and
self.months == other.months and
self.days == other.days and
self.hours == other.hours and
self.minutes == other.minutes and
self.seconds == other.seconds and
self.microseconds == other.microseconds and
self.leapdays == other.leapdays and
self.year == other.year and
self.month == other.month and
self.day == other.day and
self.hour == other.hour and
self.minute == other.minute and
self.second == other.second and
self.microsecond == other.microsecond)
def __hash__(self):
return hash((
self.weekday,
self.years,
self.months,
self.days,
self.hours,
self.minutes,
self.seconds,
self.microseconds,
self.leapdays,
self.year,
self.month,
self.day,
self.hour,
self.minute,
self.second,
self.microsecond,
))
def __ne__(self, other):
return not self.__eq__(other)
def __div__(self, other):
try:
reciprocal = 1 / float(other)
except TypeError:
return NotImplemented
return self.__mul__(reciprocal)
__truediv__ = __div__
def __repr__(self):
l = []
for attr in ["years", "months", "days", "leapdays",
"hours", "minutes", "seconds", "microseconds"]:
value = getattr(self, attr)
if value:
l.append("{attr}={value:+g}".format(attr=attr, value=value))
for attr in ["year", "month", "day", "weekday",
"hour", "minute", "second", "microsecond"]:
value = getattr(self, attr)
if value is not None:
l.append("{attr}={value}".format(attr=attr, value=repr(value)))
return "{classname}({attrs})".format(classname=self.__class__.__name__,
attrs=", ".join(l))
def _sign(x):
return int(copysign(1, x))
# vim:ts=4:sw=4:et

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from __future__ import unicode_literals
import os
import time
import subprocess
import warnings
import tempfile
import pickle
import pytest
class PicklableMixin(object):
def _get_nobj_bytes(self, obj, dump_kwargs, load_kwargs):
"""
Pickle and unpickle an object using ``pickle.dumps`` / ``pickle.loads``
"""
pkl = pickle.dumps(obj, **dump_kwargs)
return pickle.loads(pkl, **load_kwargs)
def _get_nobj_file(self, obj, dump_kwargs, load_kwargs):
"""
Pickle and unpickle an object using ``pickle.dump`` / ``pickle.load`` on
a temporary file.
"""
with tempfile.TemporaryFile('w+b') as pkl:
pickle.dump(obj, pkl, **dump_kwargs)
pkl.seek(0) # Reset the file to the beginning to read it
nobj = pickle.load(pkl, **load_kwargs)
return nobj
def assertPicklable(self, obj, singleton=False, asfile=False,
dump_kwargs=None, load_kwargs=None):
"""
Assert that an object can be pickled and unpickled. This assertion
assumes that the desired behavior is that the unpickled object compares
equal to the original object, but is not the same object.
"""
get_nobj = self._get_nobj_file if asfile else self._get_nobj_bytes
dump_kwargs = dump_kwargs or {}
load_kwargs = load_kwargs or {}
nobj = get_nobj(obj, dump_kwargs, load_kwargs)
if not singleton:
self.assertIsNot(obj, nobj)
self.assertEqual(obj, nobj)
class TZContextBase(object):
"""
Base class for a context manager which allows changing of time zones.
Subclasses may define a guard variable to either block or or allow time
zone changes by redefining ``_guard_var_name`` and ``_guard_allows_change``.
The default is that the guard variable must be affirmatively set.
Subclasses must define ``get_current_tz`` and ``set_current_tz``.
"""
_guard_var_name = "DATEUTIL_MAY_CHANGE_TZ"
_guard_allows_change = True
def __init__(self, tzval):
self.tzval = tzval
self._old_tz = None
@classmethod
def tz_change_allowed(cls):
"""
Class method used to query whether or not this class allows time zone
changes.
"""
guard = bool(os.environ.get(cls._guard_var_name, False))
# _guard_allows_change gives the "default" behavior - if True, the
# guard is overcoming a block. If false, the guard is causing a block.
# Whether tz_change is allowed is therefore the XNOR of the two.
return guard == cls._guard_allows_change
@classmethod
def tz_change_disallowed_message(cls):
""" Generate instructions on how to allow tz changes """
msg = ('Changing time zone not allowed. Set {envar} to {gval} '
'if you would like to allow this behavior')
return msg.format(envar=cls._guard_var_name,
gval=cls._guard_allows_change)
def __enter__(self):
if not self.tz_change_allowed():
msg = self.tz_change_disallowed_message()
pytest.skip(msg)
# If this is used outside of a test suite, we still want an error.
raise ValueError(msg) # pragma: no cover
self._old_tz = self.get_current_tz()
self.set_current_tz(self.tzval)
def __exit__(self, type, value, traceback):
if self._old_tz is not None:
self.set_current_tz(self._old_tz)
self._old_tz = None
def get_current_tz(self):
raise NotImplementedError
def set_current_tz(self):
raise NotImplementedError
class TZEnvContext(TZContextBase):
"""
Context manager that temporarily sets the `TZ` variable (for use on
*nix-like systems). Because the effect is local to the shell anyway, this
will apply *unless* a guard is set.
If you do not want the TZ environment variable set, you may set the
``DATEUTIL_MAY_NOT_CHANGE_TZ_VAR`` variable to a truthy value.
"""
_guard_var_name = "DATEUTIL_MAY_NOT_CHANGE_TZ_VAR"
_guard_allows_change = False
def get_current_tz(self):
return os.environ.get('TZ', UnsetTz)
def set_current_tz(self, tzval):
if tzval is UnsetTz and 'TZ' in os.environ:
del os.environ['TZ']
else:
os.environ['TZ'] = tzval
time.tzset()
class TZWinContext(TZContextBase):
"""
Context manager for changing local time zone on Windows.
Because the effect of this is system-wide and global, it may have
unintended side effect. Set the ``DATEUTIL_MAY_CHANGE_TZ`` environment
variable to a truthy value before using this context manager.
"""
def get_current_tz(self):
p = subprocess.Popen(['tzutil', '/g'], stdout=subprocess.PIPE)
ctzname, err = p.communicate()
ctzname = ctzname.decode() # Popen returns
if p.returncode:
raise OSError('Failed to get current time zone: ' + err)
return ctzname
def set_current_tz(self, tzname):
p = subprocess.Popen('tzutil /s "' + tzname + '"')
out, err = p.communicate()
if p.returncode:
raise OSError('Failed to set current time zone: ' +
(err or 'Unknown error.'))
###
# Utility classes
class NotAValueClass(object):
"""
A class analogous to NaN that has operations defined for any type.
"""
def _op(self, other):
return self # Operation with NotAValue returns NotAValue
def _cmp(self, other):
return False
__add__ = __radd__ = _op
__sub__ = __rsub__ = _op
__mul__ = __rmul__ = _op
__div__ = __rdiv__ = _op
__truediv__ = __rtruediv__ = _op
__floordiv__ = __rfloordiv__ = _op
__lt__ = __rlt__ = _op
__gt__ = __rgt__ = _op
__eq__ = __req__ = _op
__le__ = __rle__ = _op
__ge__ = __rge__ = _op
NotAValue = NotAValueClass()
class ComparesEqualClass(object):
"""
A class that is always equal to whatever you compare it to.
"""
def __eq__(self, other):
return True
def __ne__(self, other):
return False
def __le__(self, other):
return True
def __ge__(self, other):
return True
def __lt__(self, other):
return False
def __gt__(self, other):
return False
__req__ = __eq__
__rne__ = __ne__
__rle__ = __le__
__rge__ = __ge__
__rlt__ = __lt__
__rgt__ = __gt__
ComparesEqual = ComparesEqualClass()
class UnsetTzClass(object):
""" Sentinel class for unset time zone variable """
pass
UnsetTz = UnsetTzClass()

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import os
import pytest
# Configure pytest to ignore xfailing tests
# See: https://stackoverflow.com/a/53198349/467366
def pytest_collection_modifyitems(items):
for item in items:
marker_getter = getattr(item, 'get_closest_marker', None)
# Python 3.3 support
if marker_getter is None:
marker_getter = item.get_marker
marker = marker_getter('xfail')
# Need to query the args because conditional xfail tests still have
# the xfail mark even if they are not expected to fail
if marker and (not marker.args or marker.args[0]):
item.add_marker(pytest.mark.no_cover)
def set_tzpath():
"""
Sets the TZPATH variable if it's specified in an environment variable.
"""
tzpath = os.environ.get('DATEUTIL_TZPATH', None)
if tzpath is None:
return
path_components = tzpath.split(':')
print("Setting TZPATH to {}".format(path_components))
from dateutil import tz
tz.TZPATHS.clear()
tz.TZPATHS.extend(path_components)
set_tzpath()

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from hypothesis import given, assume
from hypothesis import strategies as st
from dateutil import tz
from dateutil.parser import isoparse
import pytest
# Strategies
TIME_ZONE_STRATEGY = st.sampled_from([None, tz.UTC] +
[tz.gettz(zname) for zname in ('US/Eastern', 'US/Pacific',
'Australia/Sydney', 'Europe/London')])
ASCII_STRATEGY = st.characters(max_codepoint=127)
@pytest.mark.isoparser
@given(dt=st.datetimes(timezones=TIME_ZONE_STRATEGY), sep=ASCII_STRATEGY)
def test_timespec_auto(dt, sep):
if dt.tzinfo is not None:
# Assume offset has no sub-second components
assume(dt.utcoffset().total_seconds() % 60 == 0)
sep = str(sep) # Python 2.7 requires bytes
dtstr = dt.isoformat(sep=sep)
dt_rt = isoparse(dtstr)
assert dt_rt == dt

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from hypothesis.strategies import integers
from hypothesis import given
import pytest
from dateutil.parser import parserinfo
@pytest.mark.parserinfo
@given(integers(min_value=100, max_value=9999))
def test_convertyear(n):
assert n == parserinfo().convertyear(n)
@pytest.mark.parserinfo
@given(integers(min_value=-50,
max_value=49))
def test_convertyear_no_specified_century(n):
p = parserinfo()
new_year = p._year + n
result = p.convertyear(new_year % 100, century_specified=False)
assert result == new_year

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from datetime import datetime, timedelta
import pytest
import six
from hypothesis import assume, given
from hypothesis import strategies as st
from dateutil import tz as tz
EPOCHALYPSE = datetime.fromtimestamp(2147483647)
NEGATIVE_EPOCHALYPSE = datetime.fromtimestamp(0) - timedelta(seconds=2147483648)
@pytest.mark.gettz
@pytest.mark.parametrize("gettz_arg", [None, ""])
# TODO: Remove bounds when GH #590 is resolved
@given(
dt=st.datetimes(
min_value=NEGATIVE_EPOCHALYPSE, max_value=EPOCHALYPSE, timezones=st.just(tz.UTC),
)
)
def test_gettz_returns_local(gettz_arg, dt):
act_tz = tz.gettz(gettz_arg)
if isinstance(act_tz, tz.tzlocal):
return
dt_act = dt.astimezone(tz.gettz(gettz_arg))
if six.PY2:
dt_exp = dt.astimezone(tz.tzlocal())
else:
dt_exp = dt.astimezone()
assert dt_act == dt_exp
assert dt_act.tzname() == dt_exp.tzname()
assert dt_act.utcoffset() == dt_exp.utcoffset()

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from dateutil.easter import easter
from dateutil.easter import EASTER_WESTERN, EASTER_ORTHODOX, EASTER_JULIAN
from datetime import date
import pytest
# List of easters between 1990 and 2050
western_easter_dates = [
date(1990, 4, 15), date(1991, 3, 31), date(1992, 4, 19), date(1993, 4, 11),
date(1994, 4, 3), date(1995, 4, 16), date(1996, 4, 7), date(1997, 3, 30),
date(1998, 4, 12), date(1999, 4, 4),
date(2000, 4, 23), date(2001, 4, 15), date(2002, 3, 31), date(2003, 4, 20),
date(2004, 4, 11), date(2005, 3, 27), date(2006, 4, 16), date(2007, 4, 8),
date(2008, 3, 23), date(2009, 4, 12),
date(2010, 4, 4), date(2011, 4, 24), date(2012, 4, 8), date(2013, 3, 31),
date(2014, 4, 20), date(2015, 4, 5), date(2016, 3, 27), date(2017, 4, 16),
date(2018, 4, 1), date(2019, 4, 21),
date(2020, 4, 12), date(2021, 4, 4), date(2022, 4, 17), date(2023, 4, 9),
date(2024, 3, 31), date(2025, 4, 20), date(2026, 4, 5), date(2027, 3, 28),
date(2028, 4, 16), date(2029, 4, 1),
date(2030, 4, 21), date(2031, 4, 13), date(2032, 3, 28), date(2033, 4, 17),
date(2034, 4, 9), date(2035, 3, 25), date(2036, 4, 13), date(2037, 4, 5),
date(2038, 4, 25), date(2039, 4, 10),
date(2040, 4, 1), date(2041, 4, 21), date(2042, 4, 6), date(2043, 3, 29),
date(2044, 4, 17), date(2045, 4, 9), date(2046, 3, 25), date(2047, 4, 14),
date(2048, 4, 5), date(2049, 4, 18), date(2050, 4, 10)
]
orthodox_easter_dates = [
date(1990, 4, 15), date(1991, 4, 7), date(1992, 4, 26), date(1993, 4, 18),
date(1994, 5, 1), date(1995, 4, 23), date(1996, 4, 14), date(1997, 4, 27),
date(1998, 4, 19), date(1999, 4, 11),
date(2000, 4, 30), date(2001, 4, 15), date(2002, 5, 5), date(2003, 4, 27),
date(2004, 4, 11), date(2005, 5, 1), date(2006, 4, 23), date(2007, 4, 8),
date(2008, 4, 27), date(2009, 4, 19),
date(2010, 4, 4), date(2011, 4, 24), date(2012, 4, 15), date(2013, 5, 5),
date(2014, 4, 20), date(2015, 4, 12), date(2016, 5, 1), date(2017, 4, 16),
date(2018, 4, 8), date(2019, 4, 28),
date(2020, 4, 19), date(2021, 5, 2), date(2022, 4, 24), date(2023, 4, 16),
date(2024, 5, 5), date(2025, 4, 20), date(2026, 4, 12), date(2027, 5, 2),
date(2028, 4, 16), date(2029, 4, 8),
date(2030, 4, 28), date(2031, 4, 13), date(2032, 5, 2), date(2033, 4, 24),
date(2034, 4, 9), date(2035, 4, 29), date(2036, 4, 20), date(2037, 4, 5),
date(2038, 4, 25), date(2039, 4, 17),
date(2040, 5, 6), date(2041, 4, 21), date(2042, 4, 13), date(2043, 5, 3),
date(2044, 4, 24), date(2045, 4, 9), date(2046, 4, 29), date(2047, 4, 21),
date(2048, 4, 5), date(2049, 4, 25), date(2050, 4, 17)
]
# A random smattering of Julian dates.
# Pulled values from http://www.kevinlaughery.com/east4099.html
julian_easter_dates = [
date( 326, 4, 3), date( 375, 4, 5), date( 492, 4, 5), date( 552, 3, 31),
date( 562, 4, 9), date( 569, 4, 21), date( 597, 4, 14), date( 621, 4, 19),
date( 636, 3, 31), date( 655, 3, 29), date( 700, 4, 11), date( 725, 4, 8),
date( 750, 3, 29), date( 782, 4, 7), date( 835, 4, 18), date( 849, 4, 14),
date( 867, 3, 30), date( 890, 4, 12), date( 922, 4, 21), date( 934, 4, 6),
date(1049, 3, 26), date(1058, 4, 19), date(1113, 4, 6), date(1119, 3, 30),
date(1242, 4, 20), date(1255, 3, 28), date(1257, 4, 8), date(1258, 3, 24),
date(1261, 4, 24), date(1278, 4, 17), date(1333, 4, 4), date(1351, 4, 17),
date(1371, 4, 6), date(1391, 3, 26), date(1402, 3, 26), date(1412, 4, 3),
date(1439, 4, 5), date(1445, 3, 28), date(1531, 4, 9), date(1555, 4, 14)
]
@pytest.mark.parametrize("easter_date", western_easter_dates)
def test_easter_western(easter_date):
assert easter_date == easter(easter_date.year, EASTER_WESTERN)
@pytest.mark.parametrize("easter_date", orthodox_easter_dates)
def test_easter_orthodox(easter_date):
assert easter_date == easter(easter_date.year, EASTER_ORTHODOX)
@pytest.mark.parametrize("easter_date", julian_easter_dates)
def test_easter_julian(easter_date):
assert easter_date == easter(easter_date.year, EASTER_JULIAN)
def test_easter_bad_method():
with pytest.raises(ValueError):
easter(1975, 4)

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"""Test for the "import *" functionality.
As import * can be only done at module level, it has been added in a separate file
"""
import pytest
prev_locals = list(locals())
from dateutil import *
new_locals = {name:value for name,value in locals().items()
if name not in prev_locals}
new_locals.pop('prev_locals')
@pytest.mark.import_star
def test_imported_modules():
""" Test that `from dateutil import *` adds modules in __all__ locally """
import dateutil.easter
import dateutil.parser
import dateutil.relativedelta
import dateutil.rrule
import dateutil.tz
import dateutil.utils
import dateutil.zoneinfo
assert dateutil.easter == new_locals.pop("easter")
assert dateutil.parser == new_locals.pop("parser")
assert dateutil.relativedelta == new_locals.pop("relativedelta")
assert dateutil.rrule == new_locals.pop("rrule")
assert dateutil.tz == new_locals.pop("tz")
assert dateutil.utils == new_locals.pop("utils")
assert dateutil.zoneinfo == new_locals.pop("zoneinfo")
assert not new_locals

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import sys
import pytest
HOST_IS_WINDOWS = sys.platform.startswith('win')
def test_import_version_str():
""" Test that dateutil.__version__ can be imported"""
from dateutil import __version__
def test_import_version_root():
import dateutil
assert hasattr(dateutil, '__version__')
# Test that dateutil.easter-related imports work properly
def test_import_easter_direct():
import dateutil.easter
def test_import_easter_from():
from dateutil import easter
def test_import_easter_start():
from dateutil.easter import easter
# Test that dateutil.parser-related imports work properly
def test_import_parser_direct():
import dateutil.parser
def test_import_parser_from():
from dateutil import parser
def test_import_parser_all():
# All interface
from dateutil.parser import parse
from dateutil.parser import parserinfo
# Other public classes
from dateutil.parser import parser
for var in (parse, parserinfo, parser):
assert var is not None
# Test that dateutil.relativedelta-related imports work properly
def test_import_relative_delta_direct():
import dateutil.relativedelta
def test_import_relative_delta_from():
from dateutil import relativedelta
def test_import_relative_delta_all():
from dateutil.relativedelta import relativedelta
from dateutil.relativedelta import MO, TU, WE, TH, FR, SA, SU
for var in (relativedelta, MO, TU, WE, TH, FR, SA, SU):
assert var is not None
# In the public interface but not in all
from dateutil.relativedelta import weekday
assert weekday is not None
# Test that dateutil.rrule related imports work properly
def test_import_rrule_direct():
import dateutil.rrule
def test_import_rrule_from():
from dateutil import rrule
def test_import_rrule_all():
from dateutil.rrule import rrule
from dateutil.rrule import rruleset
from dateutil.rrule import rrulestr
from dateutil.rrule import YEARLY, MONTHLY, WEEKLY, DAILY
from dateutil.rrule import HOURLY, MINUTELY, SECONDLY
from dateutil.rrule import MO, TU, WE, TH, FR, SA, SU
rr_all = (rrule, rruleset, rrulestr,
YEARLY, MONTHLY, WEEKLY, DAILY,
HOURLY, MINUTELY, SECONDLY,
MO, TU, WE, TH, FR, SA, SU)
for var in rr_all:
assert var is not None
# In the public interface but not in all
from dateutil.rrule import weekday
assert weekday is not None
# Test that dateutil.tz related imports work properly
def test_import_tztest_direct():
import dateutil.tz
def test_import_tz_from():
from dateutil import tz
def test_import_tz_all():
from dateutil.tz import tzutc
from dateutil.tz import tzoffset
from dateutil.tz import tzlocal
from dateutil.tz import tzfile
from dateutil.tz import tzrange
from dateutil.tz import tzstr
from dateutil.tz import tzical
from dateutil.tz import gettz
from dateutil.tz import tzwin
from dateutil.tz import tzwinlocal
from dateutil.tz import UTC
from dateutil.tz import datetime_ambiguous
from dateutil.tz import datetime_exists
from dateutil.tz import resolve_imaginary
tz_all = ["tzutc", "tzoffset", "tzlocal", "tzfile", "tzrange",
"tzstr", "tzical", "gettz", "datetime_ambiguous",
"datetime_exists", "resolve_imaginary", "UTC"]
tz_all += ["tzwin", "tzwinlocal"] if sys.platform.startswith("win") else []
lvars = locals()
for var in tz_all:
assert lvars[var] is not None
# Test that dateutil.tzwin related imports work properly
@pytest.mark.skipif(not HOST_IS_WINDOWS, reason="Requires Windows")
def test_import_tz_windows_direct():
import dateutil.tzwin
@pytest.mark.skipif(not HOST_IS_WINDOWS, reason="Requires Windows")
def test_import_tz_windows_from():
from dateutil import tzwin
@pytest.mark.skipif(not HOST_IS_WINDOWS, reason="Requires Windows")
def test_import_tz_windows_star():
from dateutil.tzwin import tzwin
from dateutil.tzwin import tzwinlocal
tzwin_all = [tzwin, tzwinlocal]
for var in tzwin_all:
assert var is not None
# Test imports of Zone Info
def test_import_zone_info_direct():
import dateutil.zoneinfo
def test_import_zone_info_from():
from dateutil import zoneinfo
def test_import_zone_info_star():
from dateutil.zoneinfo import gettz
from dateutil.zoneinfo import gettz_db_metadata
from dateutil.zoneinfo import rebuild
zi_all = (gettz, gettz_db_metadata, rebuild)
for var in zi_all:
assert var is not None

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# -*- coding: utf-8 -*-
"""
Tests for implementation details, not necessarily part of the user-facing
API.
The motivating case for these tests is #483, where we want to smoke-test
code that may be difficult to reach through the standard API calls.
"""
import sys
import pytest
from dateutil.parser._parser import _ymd
from dateutil import tz
IS_PY32 = sys.version_info[0:2] == (3, 2)
@pytest.mark.smoke
def test_YMD_could_be_day():
ymd = _ymd('foo bar 124 baz')
ymd.append(2, 'M')
assert ymd.has_month
assert not ymd.has_year
assert ymd.could_be_day(4)
assert not ymd.could_be_day(-6)
assert not ymd.could_be_day(32)
# Assumes leap year
assert ymd.could_be_day(29)
ymd.append(1999)
assert ymd.has_year
assert not ymd.could_be_day(29)
ymd.append(16, 'D')
assert ymd.has_day
assert not ymd.could_be_day(1)
ymd = _ymd('foo bar 124 baz')
ymd.append(1999)
assert ymd.could_be_day(31)
###
# Test that private interfaces in _parser are deprecated properly
@pytest.mark.skipif(IS_PY32, reason='pytest.warns not supported on Python 3.2')
def test_parser_private_warns():
from dateutil.parser import _timelex, _tzparser
from dateutil.parser import _parsetz
with pytest.warns(DeprecationWarning):
_tzparser()
with pytest.warns(DeprecationWarning):
_timelex('2014-03-03')
with pytest.warns(DeprecationWarning):
_parsetz('+05:00')
@pytest.mark.skipif(IS_PY32, reason='pytest.warns not supported on Python 3.2')
def test_parser_parser_private_not_warns():
from dateutil.parser._parser import _timelex, _tzparser
from dateutil.parser._parser import _parsetz
with pytest.warns(None) as recorder:
_tzparser()
assert len(recorder) == 0
with pytest.warns(None) as recorder:
_timelex('2014-03-03')
assert len(recorder) == 0
with pytest.warns(None) as recorder:
_parsetz('+05:00')
assert len(recorder) == 0
@pytest.mark.tzstr
def test_tzstr_internal_timedeltas():
with pytest.warns(tz.DeprecatedTzFormatWarning):
tz1 = tz.tzstr("EST5EDT,5,4,0,7200,11,-3,0,7200")
with pytest.warns(tz.DeprecatedTzFormatWarning):
tz2 = tz.tzstr("EST5EDT,4,1,0,7200,10,-1,0,7200")
assert tz1._start_delta != tz2._start_delta
assert tz1._end_delta != tz2._end_delta

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# -*- coding: utf-8 -*-
from __future__ import unicode_literals
from datetime import datetime, timedelta, date, time
import itertools as it
from dateutil import tz
from dateutil.tz import UTC
from dateutil.parser import isoparser, isoparse
import pytest
import six
def _generate_tzoffsets(limited):
def _mkoffset(hmtuple, fmt):
h, m = hmtuple
m_td = (-1 if h < 0 else 1) * m
tzo = tz.tzoffset(None, timedelta(hours=h, minutes=m_td))
return tzo, fmt.format(h, m)
out = []
if not limited:
# The subset that's just hours
hm_out_h = [(h, 0) for h in (-23, -5, 0, 5, 23)]
out.extend([_mkoffset(hm, '{:+03d}') for hm in hm_out_h])
# Ones that have hours and minutes
hm_out = [] + hm_out_h
hm_out += [(-12, 15), (11, 30), (10, 2), (5, 15), (-5, 30)]
else:
hm_out = [(-5, -0)]
fmts = ['{:+03d}:{:02d}', '{:+03d}{:02d}']
out += [_mkoffset(hm, fmt) for hm in hm_out for fmt in fmts]
# Also add in UTC and naive
out.append((UTC, 'Z'))
out.append((None, ''))
return out
FULL_TZOFFSETS = _generate_tzoffsets(False)
FULL_TZOFFSETS_AWARE = [x for x in FULL_TZOFFSETS if x[1]]
TZOFFSETS = _generate_tzoffsets(True)
DATES = [datetime(1996, 1, 1), datetime(2017, 1, 1)]
@pytest.mark.parametrize('dt', tuple(DATES))
def test_year_only(dt):
dtstr = dt.strftime('%Y')
assert isoparse(dtstr) == dt
DATES += [datetime(2000, 2, 1), datetime(2017, 4, 1)]
@pytest.mark.parametrize('dt', tuple(DATES))
def test_year_month(dt):
fmt = '%Y-%m'
dtstr = dt.strftime(fmt)
assert isoparse(dtstr) == dt
DATES += [datetime(2016, 2, 29), datetime(2018, 3, 15)]
YMD_FMTS = ('%Y%m%d', '%Y-%m-%d')
@pytest.mark.parametrize('dt', tuple(DATES))
@pytest.mark.parametrize('fmt', YMD_FMTS)
def test_year_month_day(dt, fmt):
dtstr = dt.strftime(fmt)
assert isoparse(dtstr) == dt
def _isoparse_date_and_time(dt, date_fmt, time_fmt, tzoffset,
microsecond_precision=None):
tzi, offset_str = tzoffset
fmt = date_fmt + 'T' + time_fmt
dt = dt.replace(tzinfo=tzi)
dtstr = dt.strftime(fmt)
if microsecond_precision is not None:
if not fmt.endswith('%f'): # pragma: nocover
raise ValueError('Time format has no microseconds!')
if microsecond_precision != 6:
dtstr = dtstr[:-(6 - microsecond_precision)]
elif microsecond_precision > 6: # pragma: nocover
raise ValueError('Precision must be 1-6')
dtstr += offset_str
assert isoparse(dtstr) == dt
DATETIMES = [datetime(1998, 4, 16, 12),
datetime(2019, 11, 18, 23),
datetime(2014, 12, 16, 4)]
@pytest.mark.parametrize('dt', tuple(DATETIMES))
@pytest.mark.parametrize('date_fmt', YMD_FMTS)
@pytest.mark.parametrize('tzoffset', TZOFFSETS)
def test_ymd_h(dt, date_fmt, tzoffset):
_isoparse_date_and_time(dt, date_fmt, '%H', tzoffset)
DATETIMES = [datetime(2012, 1, 6, 9, 37)]
@pytest.mark.parametrize('dt', tuple(DATETIMES))
@pytest.mark.parametrize('date_fmt', YMD_FMTS)
@pytest.mark.parametrize('time_fmt', ('%H%M', '%H:%M'))
@pytest.mark.parametrize('tzoffset', TZOFFSETS)
def test_ymd_hm(dt, date_fmt, time_fmt, tzoffset):
_isoparse_date_and_time(dt, date_fmt, time_fmt, tzoffset)
DATETIMES = [datetime(2003, 9, 2, 22, 14, 2),
datetime(2003, 8, 8, 14, 9, 14),
datetime(2003, 4, 7, 6, 14, 59)]
HMS_FMTS = ('%H%M%S', '%H:%M:%S')
@pytest.mark.parametrize('dt', tuple(DATETIMES))
@pytest.mark.parametrize('date_fmt', YMD_FMTS)
@pytest.mark.parametrize('time_fmt', HMS_FMTS)
@pytest.mark.parametrize('tzoffset', TZOFFSETS)
def test_ymd_hms(dt, date_fmt, time_fmt, tzoffset):
_isoparse_date_and_time(dt, date_fmt, time_fmt, tzoffset)
DATETIMES = [datetime(2017, 11, 27, 6, 14, 30, 123456)]
@pytest.mark.parametrize('dt', tuple(DATETIMES))
@pytest.mark.parametrize('date_fmt', YMD_FMTS)
@pytest.mark.parametrize('time_fmt', (x + sep + '%f' for x in HMS_FMTS
for sep in '.,'))
@pytest.mark.parametrize('tzoffset', TZOFFSETS)
@pytest.mark.parametrize('precision', list(range(3, 7)))
def test_ymd_hms_micro(dt, date_fmt, time_fmt, tzoffset, precision):
# Truncate the microseconds to the desired precision for the representation
dt = dt.replace(microsecond=int(round(dt.microsecond, precision-6)))
_isoparse_date_and_time(dt, date_fmt, time_fmt, tzoffset, precision)
###
# Truncation of extra digits beyond microsecond precision
@pytest.mark.parametrize('dt_str', [
'2018-07-03T14:07:00.123456000001',
'2018-07-03T14:07:00.123456999999',
])
def test_extra_subsecond_digits(dt_str):
assert isoparse(dt_str) == datetime(2018, 7, 3, 14, 7, 0, 123456)
@pytest.mark.parametrize('tzoffset', FULL_TZOFFSETS)
def test_full_tzoffsets(tzoffset):
dt = datetime(2017, 11, 27, 6, 14, 30, 123456)
date_fmt = '%Y-%m-%d'
time_fmt = '%H:%M:%S.%f'
_isoparse_date_and_time(dt, date_fmt, time_fmt, tzoffset)
@pytest.mark.parametrize('dt_str', [
'2014-04-11T00',
'2014-04-10T24',
'2014-04-11T00:00',
'2014-04-10T24:00',
'2014-04-11T00:00:00',
'2014-04-10T24:00:00',
'2014-04-11T00:00:00.000',
'2014-04-10T24:00:00.000',
'2014-04-11T00:00:00.000000',
'2014-04-10T24:00:00.000000']
)
def test_datetime_midnight(dt_str):
assert isoparse(dt_str) == datetime(2014, 4, 11, 0, 0, 0, 0)
@pytest.mark.parametrize('datestr', [
'2014-01-01',
'20140101',
])
@pytest.mark.parametrize('sep', [' ', 'a', 'T', '_', '-'])
def test_isoparse_sep_none(datestr, sep):
isostr = datestr + sep + '14:33:09'
assert isoparse(isostr) == datetime(2014, 1, 1, 14, 33, 9)
##
# Uncommon date formats
TIME_ARGS = ('time_args',
((None, time(0), None), ) + tuple(('%H:%M:%S.%f', _t, _tz)
for _t, _tz in it.product([time(0), time(9, 30), time(14, 47)],
TZOFFSETS)))
@pytest.mark.parametrize('isocal,dt_expected',[
((2017, 10), datetime(2017, 3, 6)),
((2020, 1), datetime(2019, 12, 30)), # ISO year != Cal year
((2004, 53), datetime(2004, 12, 27)), # Only half the week is in 2014
])
def test_isoweek(isocal, dt_expected):
# TODO: Figure out how to parametrize this on formats, too
for fmt in ('{:04d}-W{:02d}', '{:04d}W{:02d}'):
dtstr = fmt.format(*isocal)
assert isoparse(dtstr) == dt_expected
@pytest.mark.parametrize('isocal,dt_expected',[
((2016, 13, 7), datetime(2016, 4, 3)),
((2004, 53, 7), datetime(2005, 1, 2)), # ISO year != Cal year
((2009, 1, 2), datetime(2008, 12, 30)), # ISO year < Cal year
((2009, 53, 6), datetime(2010, 1, 2)) # ISO year > Cal year
])
def test_isoweek_day(isocal, dt_expected):
# TODO: Figure out how to parametrize this on formats, too
for fmt in ('{:04d}-W{:02d}-{:d}', '{:04d}W{:02d}{:d}'):
dtstr = fmt.format(*isocal)
assert isoparse(dtstr) == dt_expected
@pytest.mark.parametrize('isoord,dt_expected', [
((2004, 1), datetime(2004, 1, 1)),
((2016, 60), datetime(2016, 2, 29)),
((2017, 60), datetime(2017, 3, 1)),
((2016, 366), datetime(2016, 12, 31)),
((2017, 365), datetime(2017, 12, 31))
])
def test_iso_ordinal(isoord, dt_expected):
for fmt in ('{:04d}-{:03d}', '{:04d}{:03d}'):
dtstr = fmt.format(*isoord)
assert isoparse(dtstr) == dt_expected
###
# Acceptance of bytes
@pytest.mark.parametrize('isostr,dt', [
(b'2014', datetime(2014, 1, 1)),
(b'20140204', datetime(2014, 2, 4)),
(b'2014-02-04', datetime(2014, 2, 4)),
(b'2014-02-04T12', datetime(2014, 2, 4, 12)),
(b'2014-02-04T12:30', datetime(2014, 2, 4, 12, 30)),
(b'2014-02-04T12:30:15', datetime(2014, 2, 4, 12, 30, 15)),
(b'2014-02-04T12:30:15.224', datetime(2014, 2, 4, 12, 30, 15, 224000)),
(b'20140204T123015.224', datetime(2014, 2, 4, 12, 30, 15, 224000)),
(b'2014-02-04T12:30:15.224Z', datetime(2014, 2, 4, 12, 30, 15, 224000,
UTC)),
(b'2014-02-04T12:30:15.224z', datetime(2014, 2, 4, 12, 30, 15, 224000,
UTC)),
(b'2014-02-04T12:30:15.224+05:00',
datetime(2014, 2, 4, 12, 30, 15, 224000,
tzinfo=tz.tzoffset(None, timedelta(hours=5))))])
def test_bytes(isostr, dt):
assert isoparse(isostr) == dt
###
# Invalid ISO strings
@pytest.mark.parametrize('isostr,exception', [
('201', ValueError), # ISO string too short
('2012-0425', ValueError), # Inconsistent date separators
('201204-25', ValueError), # Inconsistent date separators
('20120425T0120:00', ValueError), # Inconsistent time separators
('20120425T01:2000', ValueError), # Inconsistent time separators
('14:3015', ValueError), # Inconsistent time separator
('20120425T012500-334', ValueError), # Wrong microsecond separator
('2001-1', ValueError), # YYYY-M not valid
('2012-04-9', ValueError), # YYYY-MM-D not valid
('201204', ValueError), # YYYYMM not valid
('20120411T03:30+', ValueError), # Time zone too short
('20120411T03:30+1234567', ValueError), # Time zone too long
('20120411T03:30-25:40', ValueError), # Time zone invalid
('2012-1a', ValueError), # Invalid month
('20120411T03:30+00:60', ValueError), # Time zone invalid minutes
('20120411T03:30+00:61', ValueError), # Time zone invalid minutes
('20120411T033030.123456012:00', # No sign in time zone
ValueError),
('2012-W00', ValueError), # Invalid ISO week
('2012-W55', ValueError), # Invalid ISO week
('2012-W01-0', ValueError), # Invalid ISO week day
('2012-W01-8', ValueError), # Invalid ISO week day
('2013-000', ValueError), # Invalid ordinal day
('2013-366', ValueError), # Invalid ordinal day
('2013366', ValueError), # Invalid ordinal day
('2014-03-12Т12:30:14', ValueError), # Cyrillic T
('2014-04-21T24:00:01', ValueError), # Invalid use of 24 for midnight
('2014_W01-1', ValueError), # Invalid separator
('2014W01-1', ValueError), # Inconsistent use of dashes
('2014-W011', ValueError), # Inconsistent use of dashes
])
def test_iso_raises(isostr, exception):
with pytest.raises(exception):
isoparse(isostr)
@pytest.mark.parametrize('sep_act, valid_sep, exception', [
('T', 'C', ValueError),
('C', 'T', ValueError),
])
def test_iso_with_sep_raises(sep_act, valid_sep, exception):
parser = isoparser(sep=valid_sep)
isostr = '2012-04-25' + sep_act + '01:25:00'
with pytest.raises(exception):
parser.isoparse(isostr)
###
# Test ISOParser constructor
@pytest.mark.parametrize('sep', [' ', '9', '🍛'])
def test_isoparser_invalid_sep(sep):
with pytest.raises(ValueError):
isoparser(sep=sep)
# This only fails on Python 3
@pytest.mark.xfail(not six.PY2, reason="Fails on Python 3 only")
def test_isoparser_byte_sep():
dt = datetime(2017, 12, 6, 12, 30, 45)
dt_str = dt.isoformat(sep=str('T'))
dt_rt = isoparser(sep=b'T').isoparse(dt_str)
assert dt == dt_rt
###
# Test parse_tzstr
@pytest.mark.parametrize('tzoffset', FULL_TZOFFSETS)
def test_parse_tzstr(tzoffset):
dt = datetime(2017, 11, 27, 6, 14, 30, 123456)
date_fmt = '%Y-%m-%d'
time_fmt = '%H:%M:%S.%f'
_isoparse_date_and_time(dt, date_fmt, time_fmt, tzoffset)
@pytest.mark.parametrize('tzstr', [
'-00:00', '+00:00', '+00', '-00', '+0000', '-0000'
])
@pytest.mark.parametrize('zero_as_utc', [True, False])
def test_parse_tzstr_zero_as_utc(tzstr, zero_as_utc):
tzi = isoparser().parse_tzstr(tzstr, zero_as_utc=zero_as_utc)
assert tzi == UTC
assert (type(tzi) == tz.tzutc) == zero_as_utc
@pytest.mark.parametrize('tzstr,exception', [
('00:00', ValueError), # No sign
('05:00', ValueError), # No sign
('_00:00', ValueError), # Invalid sign
('+25:00', ValueError), # Offset too large
('00:0000', ValueError), # String too long
])
def test_parse_tzstr_fails(tzstr, exception):
with pytest.raises(exception):
isoparser().parse_tzstr(tzstr)
###
# Test parse_isodate
def __make_date_examples():
dates_no_day = [
date(1999, 12, 1),
date(2016, 2, 1)
]
if not six.PY2:
# strftime does not support dates before 1900 in Python 2
dates_no_day.append(date(1000, 11, 1))
# Only one supported format for dates with no day
o = zip(dates_no_day, it.repeat('%Y-%m'))
dates_w_day = [
date(1969, 12, 31),
date(1900, 1, 1),
date(2016, 2, 29),
date(2017, 11, 14)
]
dates_w_day_fmts = ('%Y%m%d', '%Y-%m-%d')
o = it.chain(o, it.product(dates_w_day, dates_w_day_fmts))
return list(o)
@pytest.mark.parametrize('d,dt_fmt', __make_date_examples())
@pytest.mark.parametrize('as_bytes', [True, False])
def test_parse_isodate(d, dt_fmt, as_bytes):
d_str = d.strftime(dt_fmt)
if isinstance(d_str, six.text_type) and as_bytes:
d_str = d_str.encode('ascii')
elif isinstance(d_str, bytes) and not as_bytes:
d_str = d_str.decode('ascii')
iparser = isoparser()
assert iparser.parse_isodate(d_str) == d
@pytest.mark.parametrize('isostr,exception', [
('243', ValueError), # ISO string too short
('2014-0423', ValueError), # Inconsistent date separators
('201404-23', ValueError), # Inconsistent date separators
('2014日03月14', ValueError), # Not ASCII
('2013-02-29', ValueError), # Not a leap year
('2014/12/03', ValueError), # Wrong separators
('2014-04-19T', ValueError), # Unknown components
('201202', ValueError), # Invalid format
])
def test_isodate_raises(isostr, exception):
with pytest.raises(exception):
isoparser().parse_isodate(isostr)
def test_parse_isodate_error_text():
with pytest.raises(ValueError) as excinfo:
isoparser().parse_isodate('2014-0423')
# ensure the error message does not contain b' prefixes
if six.PY2:
expected_error = "String contains unknown ISO components: u'2014-0423'"
else:
expected_error = "String contains unknown ISO components: '2014-0423'"
assert expected_error == str(excinfo.value)
###
# Test parse_isotime
def __make_time_examples():
outputs = []
# HH
time_h = [time(0), time(8), time(22)]
time_h_fmts = ['%H']
outputs.append(it.product(time_h, time_h_fmts))
# HHMM / HH:MM
time_hm = [time(0, 0), time(0, 30), time(8, 47), time(16, 1)]
time_hm_fmts = ['%H%M', '%H:%M']
outputs.append(it.product(time_hm, time_hm_fmts))
# HHMMSS / HH:MM:SS
time_hms = [time(0, 0, 0), time(0, 15, 30),
time(8, 2, 16), time(12, 0), time(16, 2), time(20, 45)]
time_hms_fmts = ['%H%M%S', '%H:%M:%S']
outputs.append(it.product(time_hms, time_hms_fmts))
# HHMMSS.ffffff / HH:MM:SS.ffffff
time_hmsu = [time(0, 0, 0, 0), time(4, 15, 3, 247993),
time(14, 21, 59, 948730),
time(23, 59, 59, 999999)]
time_hmsu_fmts = ['%H%M%S.%f', '%H:%M:%S.%f']
outputs.append(it.product(time_hmsu, time_hmsu_fmts))
outputs = list(map(list, outputs))
# Time zones
ex_naive = list(it.chain.from_iterable(x[0:2] for x in outputs))
o = it.product(ex_naive, TZOFFSETS) # ((time, fmt), (tzinfo, offsetstr))
o = ((t.replace(tzinfo=tzi), fmt + off_str)
for (t, fmt), (tzi, off_str) in o)
outputs.append(o)
return list(it.chain.from_iterable(outputs))
@pytest.mark.parametrize('time_val,time_fmt', __make_time_examples())
@pytest.mark.parametrize('as_bytes', [True, False])
def test_isotime(time_val, time_fmt, as_bytes):
tstr = time_val.strftime(time_fmt)
if isinstance(tstr, six.text_type) and as_bytes:
tstr = tstr.encode('ascii')
elif isinstance(tstr, bytes) and not as_bytes:
tstr = tstr.decode('ascii')
iparser = isoparser()
assert iparser.parse_isotime(tstr) == time_val
@pytest.mark.parametrize('isostr', [
'24:00',
'2400',
'24:00:00',
'240000',
'24:00:00.000',
'24:00:00,000',
'24:00:00.000000',
'24:00:00,000000',
])
def test_isotime_midnight(isostr):
iparser = isoparser()
assert iparser.parse_isotime(isostr) == time(0, 0, 0, 0)
@pytest.mark.parametrize('isostr,exception', [
('3', ValueError), # ISO string too short
('14時30分15秒', ValueError), # Not ASCII
('14_30_15', ValueError), # Invalid separators
('1430:15', ValueError), # Inconsistent separator use
('25', ValueError), # Invalid hours
('25:15', ValueError), # Invalid hours
('14:60', ValueError), # Invalid minutes
('14:59:61', ValueError), # Invalid seconds
('14:30:15.34468305:00', ValueError), # No sign in time zone
('14:30:15+', ValueError), # Time zone too short
('14:30:15+1234567', ValueError), # Time zone invalid
('14:59:59+25:00', ValueError), # Invalid tz hours
('14:59:59+12:62', ValueError), # Invalid tz minutes
('14:59:30_344583', ValueError), # Invalid microsecond separator
('24:01', ValueError), # 24 used for non-midnight time
('24:00:01', ValueError), # 24 used for non-midnight time
('24:00:00.001', ValueError), # 24 used for non-midnight time
('24:00:00.000001', ValueError), # 24 used for non-midnight time
])
def test_isotime_raises(isostr, exception):
iparser = isoparser()
with pytest.raises(exception):
iparser.parse_isotime(isostr)

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# -*- coding: utf-8 -*-
from __future__ import unicode_literals
import itertools
from datetime import datetime, timedelta
import unittest
import sys
from dateutil import tz
from dateutil.tz import tzoffset
from dateutil.parser import parse, parserinfo
from dateutil.parser import ParserError
from dateutil.parser import UnknownTimezoneWarning
from ._common import TZEnvContext
from six import assertRaisesRegex, PY2
from io import StringIO
import pytest
# Platform info
IS_WIN = sys.platform.startswith('win')
PLATFORM_HAS_DASH_D = False
try:
if datetime.now().strftime('%-d'):
PLATFORM_HAS_DASH_D = True
except ValueError:
pass
@pytest.fixture(params=[True, False])
def fuzzy(request):
"""Fixture to pass fuzzy=True or fuzzy=False to parse"""
return request.param
# Parser test cases using no keyword arguments. Format: (parsable_text, expected_datetime, assertion_message)
PARSER_TEST_CASES = [
("Thu Sep 25 10:36:28 2003", datetime(2003, 9, 25, 10, 36, 28), "date command format strip"),
("Thu Sep 25 2003", datetime(2003, 9, 25), "date command format strip"),
("2003-09-25T10:49:41", datetime(2003, 9, 25, 10, 49, 41), "iso format strip"),
("2003-09-25T10:49", datetime(2003, 9, 25, 10, 49), "iso format strip"),
("2003-09-25T10", datetime(2003, 9, 25, 10), "iso format strip"),
("2003-09-25", datetime(2003, 9, 25), "iso format strip"),
("20030925T104941", datetime(2003, 9, 25, 10, 49, 41), "iso stripped format strip"),
("20030925T1049", datetime(2003, 9, 25, 10, 49, 0), "iso stripped format strip"),
("20030925T10", datetime(2003, 9, 25, 10), "iso stripped format strip"),
("20030925", datetime(2003, 9, 25), "iso stripped format strip"),
("2003-09-25 10:49:41,502", datetime(2003, 9, 25, 10, 49, 41, 502000), "python logger format"),
("199709020908", datetime(1997, 9, 2, 9, 8), "no separator"),
("19970902090807", datetime(1997, 9, 2, 9, 8, 7), "no separator"),
("09-25-2003", datetime(2003, 9, 25), "date with dash"),
("25-09-2003", datetime(2003, 9, 25), "date with dash"),
("10-09-2003", datetime(2003, 10, 9), "date with dash"),
("10-09-03", datetime(2003, 10, 9), "date with dash"),
("2003.09.25", datetime(2003, 9, 25), "date with dot"),
("09.25.2003", datetime(2003, 9, 25), "date with dot"),
("25.09.2003", datetime(2003, 9, 25), "date with dot"),
("10.09.2003", datetime(2003, 10, 9), "date with dot"),
("10.09.03", datetime(2003, 10, 9), "date with dot"),
("2003/09/25", datetime(2003, 9, 25), "date with slash"),
("09/25/2003", datetime(2003, 9, 25), "date with slash"),
("25/09/2003", datetime(2003, 9, 25), "date with slash"),
("10/09/2003", datetime(2003, 10, 9), "date with slash"),
("10/09/03", datetime(2003, 10, 9), "date with slash"),
("2003 09 25", datetime(2003, 9, 25), "date with space"),
("09 25 2003", datetime(2003, 9, 25), "date with space"),
("25 09 2003", datetime(2003, 9, 25), "date with space"),
("10 09 2003", datetime(2003, 10, 9), "date with space"),
("10 09 03", datetime(2003, 10, 9), "date with space"),
("25 09 03", datetime(2003, 9, 25), "date with space"),
("03 25 Sep", datetime(2003, 9, 25), "strangely ordered date"),
("25 03 Sep", datetime(2025, 9, 3), "strangely ordered date"),
(" July 4 , 1976 12:01:02 am ", datetime(1976, 7, 4, 0, 1, 2), "extra space"),
("Wed, July 10, '96", datetime(1996, 7, 10, 0, 0), "random format"),
("1996.July.10 AD 12:08 PM", datetime(1996, 7, 10, 12, 8), "random format"),
("July 4, 1976", datetime(1976, 7, 4), "random format"),
("7 4 1976", datetime(1976, 7, 4), "random format"),
("4 jul 1976", datetime(1976, 7, 4), "random format"),
("4 Jul 1976", datetime(1976, 7, 4), "'%-d %b %Y' format"),
("7-4-76", datetime(1976, 7, 4), "random format"),
("19760704", datetime(1976, 7, 4), "random format"),
("0:01:02 on July 4, 1976", datetime(1976, 7, 4, 0, 1, 2), "random format"),
("July 4, 1976 12:01:02 am", datetime(1976, 7, 4, 0, 1, 2), "random format"),
("Mon Jan 2 04:24:27 1995", datetime(1995, 1, 2, 4, 24, 27), "random format"),
("04.04.95 00:22", datetime(1995, 4, 4, 0, 22), "random format"),
("Jan 1 1999 11:23:34.578", datetime(1999, 1, 1, 11, 23, 34, 578000), "random format"),
("950404 122212", datetime(1995, 4, 4, 12, 22, 12), "random format"),
("3rd of May 2001", datetime(2001, 5, 3), "random format"),
("5th of March 2001", datetime(2001, 3, 5), "random format"),
("1st of May 2003", datetime(2003, 5, 1), "random format"),
('0099-01-01T00:00:00', datetime(99, 1, 1, 0, 0), "99 ad"),
('0031-01-01T00:00:00', datetime(31, 1, 1, 0, 0), "31 ad"),
("20080227T21:26:01.123456789", datetime(2008, 2, 27, 21, 26, 1, 123456), "high precision seconds"),
('13NOV2017', datetime(2017, 11, 13), "dBY (See GH360)"),
('0003-03-04', datetime(3, 3, 4), "pre 12 year same month (See GH PR #293)"),
('December.0031.30', datetime(31, 12, 30), "BYd corner case (GH#687)"),
# Cases with legacy h/m/s format, candidates for deprecation (GH#886)
("2016-12-21 04.2h", datetime(2016, 12, 21, 4, 12), "Fractional Hours"),
]
# Check that we don't have any duplicates
assert len(set([x[0] for x in PARSER_TEST_CASES])) == len(PARSER_TEST_CASES)
@pytest.mark.parametrize("parsable_text,expected_datetime,assertion_message", PARSER_TEST_CASES)
def test_parser(parsable_text, expected_datetime, assertion_message):
assert parse(parsable_text) == expected_datetime, assertion_message
# Parser test cases using datetime(2003, 9, 25) as a default.
# Format: (parsable_text, expected_datetime, assertion_message)
PARSER_DEFAULT_TEST_CASES = [
("Thu Sep 25 10:36:28", datetime(2003, 9, 25, 10, 36, 28), "date command format strip"),
("Thu Sep 10:36:28", datetime(2003, 9, 25, 10, 36, 28), "date command format strip"),
("Thu 10:36:28", datetime(2003, 9, 25, 10, 36, 28), "date command format strip"),
("Sep 10:36:28", datetime(2003, 9, 25, 10, 36, 28), "date command format strip"),
("10:36:28", datetime(2003, 9, 25, 10, 36, 28), "date command format strip"),
("10:36", datetime(2003, 9, 25, 10, 36), "date command format strip"),
("Sep 2003", datetime(2003, 9, 25), "date command format strip"),
("Sep", datetime(2003, 9, 25), "date command format strip"),
("2003", datetime(2003, 9, 25), "date command format strip"),
("10h36m28.5s", datetime(2003, 9, 25, 10, 36, 28, 500000), "hour with letters"),
("10h36m28s", datetime(2003, 9, 25, 10, 36, 28), "hour with letters strip"),
("10h36m", datetime(2003, 9, 25, 10, 36), "hour with letters strip"),
("10h", datetime(2003, 9, 25, 10), "hour with letters strip"),
("10 h 36", datetime(2003, 9, 25, 10, 36), "hour with letters strip"),
("10 h 36.5", datetime(2003, 9, 25, 10, 36, 30), "hour with letter strip"),
("36 m 5", datetime(2003, 9, 25, 0, 36, 5), "hour with letters spaces"),
("36 m 5 s", datetime(2003, 9, 25, 0, 36, 5), "minute with letters spaces"),
("36 m 05", datetime(2003, 9, 25, 0, 36, 5), "minute with letters spaces"),
("36 m 05 s", datetime(2003, 9, 25, 0, 36, 5), "minutes with letters spaces"),
("10h am", datetime(2003, 9, 25, 10), "hour am pm"),
("10h pm", datetime(2003, 9, 25, 22), "hour am pm"),
("10am", datetime(2003, 9, 25, 10), "hour am pm"),
("10pm", datetime(2003, 9, 25, 22), "hour am pm"),
("10:00 am", datetime(2003, 9, 25, 10), "hour am pm"),
("10:00 pm", datetime(2003, 9, 25, 22), "hour am pm"),
("10:00am", datetime(2003, 9, 25, 10), "hour am pm"),
("10:00pm", datetime(2003, 9, 25, 22), "hour am pm"),
("10:00a.m", datetime(2003, 9, 25, 10), "hour am pm"),
("10:00p.m", datetime(2003, 9, 25, 22), "hour am pm"),
("10:00a.m.", datetime(2003, 9, 25, 10), "hour am pm"),
("10:00p.m.", datetime(2003, 9, 25, 22), "hour am pm"),
("Wed", datetime(2003, 10, 1), "weekday alone"),
("Wednesday", datetime(2003, 10, 1), "long weekday"),
("October", datetime(2003, 10, 25), "long month"),
("31-Dec-00", datetime(2000, 12, 31), "zero year"),
("0:01:02", datetime(2003, 9, 25, 0, 1, 2), "random format"),
("12h 01m02s am", datetime(2003, 9, 25, 0, 1, 2), "random format"),
("12:08 PM", datetime(2003, 9, 25, 12, 8), "random format"),
("01h02m03", datetime(2003, 9, 25, 1, 2, 3), "random format"),
("01h02", datetime(2003, 9, 25, 1, 2), "random format"),
("01h02s", datetime(2003, 9, 25, 1, 0, 2), "random format"),
("01m02", datetime(2003, 9, 25, 0, 1, 2), "random format"),
("01m02h", datetime(2003, 9, 25, 2, 1), "random format"),
("2004 10 Apr 11h30m", datetime(2004, 4, 10, 11, 30), "random format")
]
# Check that we don't have any duplicates
assert len(set([x[0] for x in PARSER_DEFAULT_TEST_CASES])) == len(PARSER_DEFAULT_TEST_CASES)
@pytest.mark.parametrize("parsable_text,expected_datetime,assertion_message", PARSER_DEFAULT_TEST_CASES)
def test_parser_default(parsable_text, expected_datetime, assertion_message):
assert parse(parsable_text, default=datetime(2003, 9, 25)) == expected_datetime, assertion_message
@pytest.mark.parametrize('sep', ['-', '.', '/', ' '])
def test_parse_dayfirst(sep):
expected = datetime(2003, 9, 10)
fmt = sep.join(['%d', '%m', '%Y'])
dstr = expected.strftime(fmt)
result = parse(dstr, dayfirst=True)
assert result == expected
@pytest.mark.parametrize('sep', ['-', '.', '/', ' '])
def test_parse_yearfirst(sep):
expected = datetime(2010, 9, 3)
fmt = sep.join(['%Y', '%m', '%d'])
dstr = expected.strftime(fmt)
result = parse(dstr, yearfirst=True)
assert result == expected
@pytest.mark.parametrize('dstr,expected', [
("Thu Sep 25 10:36:28 BRST 2003", datetime(2003, 9, 25, 10, 36, 28)),
("1996.07.10 AD at 15:08:56 PDT", datetime(1996, 7, 10, 15, 8, 56)),
("Tuesday, April 12, 1952 AD 3:30:42pm PST",
datetime(1952, 4, 12, 15, 30, 42)),
("November 5, 1994, 8:15:30 am EST", datetime(1994, 11, 5, 8, 15, 30)),
("1994-11-05T08:15:30-05:00", datetime(1994, 11, 5, 8, 15, 30)),
("1994-11-05T08:15:30Z", datetime(1994, 11, 5, 8, 15, 30)),
("1976-07-04T00:01:02Z", datetime(1976, 7, 4, 0, 1, 2)),
("1986-07-05T08:15:30z", datetime(1986, 7, 5, 8, 15, 30)),
("Tue Apr 4 00:22:12 PDT 1995", datetime(1995, 4, 4, 0, 22, 12)),
])
def test_parse_ignoretz(dstr, expected):
result = parse(dstr, ignoretz=True)
assert result == expected
_brsttz = tzoffset("BRST", -10800)
@pytest.mark.parametrize('dstr,expected', [
("20030925T104941-0300",
datetime(2003, 9, 25, 10, 49, 41, tzinfo=_brsttz)),
("Thu, 25 Sep 2003 10:49:41 -0300",
datetime(2003, 9, 25, 10, 49, 41, tzinfo=_brsttz)),
("2003-09-25T10:49:41.5-03:00",
datetime(2003, 9, 25, 10, 49, 41, 500000, tzinfo=_brsttz)),
("2003-09-25T10:49:41-03:00",
datetime(2003, 9, 25, 10, 49, 41, tzinfo=_brsttz)),
("20030925T104941.5-0300",
datetime(2003, 9, 25, 10, 49, 41, 500000, tzinfo=_brsttz)),
])
def test_parse_with_tzoffset(dstr, expected):
# In these cases, we are _not_ passing a tzinfos arg
result = parse(dstr)
assert result == expected
class TestFormat(object):
def test_ybd(self):
# If we have a 4-digit year, a non-numeric month (abbreviated or not),
# and a day (1 or 2 digits), then there is no ambiguity as to which
# token is a year/month/day. This holds regardless of what order the
# terms are in and for each of the separators below.
seps = ['-', ' ', '/', '.']
year_tokens = ['%Y']
month_tokens = ['%b', '%B']
day_tokens = ['%d']
if PLATFORM_HAS_DASH_D:
day_tokens.append('%-d')
prods = itertools.product(year_tokens, month_tokens, day_tokens)
perms = [y for x in prods for y in itertools.permutations(x)]
unambig_fmts = [sep.join(perm) for sep in seps for perm in perms]
actual = datetime(2003, 9, 25)
for fmt in unambig_fmts:
dstr = actual.strftime(fmt)
res = parse(dstr)
assert res == actual
# TODO: some redundancy with PARSER_TEST_CASES cases
@pytest.mark.parametrize("fmt,dstr", [
("%a %b %d %Y", "Thu Sep 25 2003"),
("%b %d %Y", "Sep 25 2003"),
("%Y-%m-%d", "2003-09-25"),
("%Y%m%d", "20030925"),
("%Y-%b-%d", "2003-Sep-25"),
("%d-%b-%Y", "25-Sep-2003"),
("%b-%d-%Y", "Sep-25-2003"),
("%m-%d-%Y", "09-25-2003"),
("%d-%m-%Y", "25-09-2003"),
("%Y.%m.%d", "2003.09.25"),
("%Y.%b.%d", "2003.Sep.25"),
("%d.%b.%Y", "25.Sep.2003"),
("%b.%d.%Y", "Sep.25.2003"),
("%m.%d.%Y", "09.25.2003"),
("%d.%m.%Y", "25.09.2003"),
("%Y/%m/%d", "2003/09/25"),
("%Y/%b/%d", "2003/Sep/25"),
("%d/%b/%Y", "25/Sep/2003"),
("%b/%d/%Y", "Sep/25/2003"),
("%m/%d/%Y", "09/25/2003"),
("%d/%m/%Y", "25/09/2003"),
("%Y %m %d", "2003 09 25"),
("%Y %b %d", "2003 Sep 25"),
("%d %b %Y", "25 Sep 2003"),
("%m %d %Y", "09 25 2003"),
("%d %m %Y", "25 09 2003"),
("%y %d %b", "03 25 Sep",),
])
def test_strftime_formats_2003Sep25(self, fmt, dstr):
expected = datetime(2003, 9, 25)
# First check that the format strings behave as expected
# (not strictly necessary, but nice to have)
assert expected.strftime(fmt) == dstr
res = parse(dstr)
assert res == expected
class TestInputTypes(object):
def test_empty_string_invalid(self):
with pytest.raises(ParserError):
parse('')
def test_none_invalid(self):
with pytest.raises(TypeError):
parse(None)
def test_int_invalid(self):
with pytest.raises(TypeError):
parse(13)
def test_duck_typing(self):
# We want to support arbitrary classes that implement the stream
# interface.
class StringPassThrough(object):
def __init__(self, stream):
self.stream = stream
def read(self, *args, **kwargs):
return self.stream.read(*args, **kwargs)
dstr = StringPassThrough(StringIO('2014 January 19'))
res = parse(dstr)
expected = datetime(2014, 1, 19)
assert res == expected
def test_parse_stream(self):
dstr = StringIO('2014 January 19')
res = parse(dstr)
expected = datetime(2014, 1, 19)
assert res == expected
def test_parse_str(self):
# Parser should be able to handle bytestring and unicode
uni_str = '2014-05-01 08:00:00'
bytes_str = uni_str.encode()
res = parse(bytes_str)
expected = parse(uni_str)
assert res == expected
def test_parse_bytes(self):
res = parse(b'2014 January 19')
expected = datetime(2014, 1, 19)
assert res == expected
def test_parse_bytearray(self):
# GH#417
res = parse(bytearray(b'2014 January 19'))
expected = datetime(2014, 1, 19)
assert res == expected
class TestTzinfoInputTypes(object):
def assert_equal_same_tz(self, dt1, dt2):
assert dt1 == dt2
assert dt1.tzinfo is dt2.tzinfo
def test_tzinfo_dict_could_return_none(self):
dstr = "2017-02-03 12:40 BRST"
result = parse(dstr, tzinfos={"BRST": None})
expected = datetime(2017, 2, 3, 12, 40)
self.assert_equal_same_tz(result, expected)
def test_tzinfos_callable_could_return_none(self):
dstr = "2017-02-03 12:40 BRST"
result = parse(dstr, tzinfos=lambda *args: None)
expected = datetime(2017, 2, 3, 12, 40)
self.assert_equal_same_tz(result, expected)
def test_invalid_tzinfo_input(self):
dstr = "2014 January 19 09:00 UTC"
# Pass an absurd tzinfos object
tzinfos = {"UTC": ValueError}
with pytest.raises(TypeError):
parse(dstr, tzinfos=tzinfos)
def test_valid_tzinfo_tzinfo_input(self):
dstr = "2014 January 19 09:00 UTC"
tzinfos = {"UTC": tz.UTC}
expected = datetime(2014, 1, 19, 9, tzinfo=tz.UTC)
res = parse(dstr, tzinfos=tzinfos)
self.assert_equal_same_tz(res, expected)
def test_valid_tzinfo_unicode_input(self):
dstr = "2014 January 19 09:00 UTC"
tzinfos = {u"UTC": u"UTC+0"}
expected = datetime(2014, 1, 19, 9, tzinfo=tz.tzstr("UTC+0"))
res = parse(dstr, tzinfos=tzinfos)
self.assert_equal_same_tz(res, expected)
def test_valid_tzinfo_callable_input(self):
dstr = "2014 January 19 09:00 UTC"
def tzinfos(*args, **kwargs):
return u"UTC+0"
expected = datetime(2014, 1, 19, 9, tzinfo=tz.tzstr("UTC+0"))
res = parse(dstr, tzinfos=tzinfos)
self.assert_equal_same_tz(res, expected)
def test_valid_tzinfo_int_input(self):
dstr = "2014 January 19 09:00 UTC"
tzinfos = {u"UTC": -28800}
expected = datetime(2014, 1, 19, 9, tzinfo=tz.tzoffset(u"UTC", -28800))
res = parse(dstr, tzinfos=tzinfos)
self.assert_equal_same_tz(res, expected)
class ParserTest(unittest.TestCase):
@classmethod
def setup_class(cls):
cls.tzinfos = {"BRST": -10800}
cls.brsttz = tzoffset("BRST", -10800)
cls.default = datetime(2003, 9, 25)
# Parser should be able to handle bytestring and unicode
cls.uni_str = '2014-05-01 08:00:00'
cls.str_str = cls.uni_str.encode()
def testParserParseStr(self):
from dateutil.parser import parser
assert parser().parse(self.str_str) == parser().parse(self.uni_str)
def testParseUnicodeWords(self):
class rus_parserinfo(parserinfo):
MONTHS = [("янв", "Январь"),
("фев", "Февраль"),
("мар", "Март"),
("апр", "Апрель"),
("май", "Май"),
("июн", "Июнь"),
("июл", "Июль"),
("авг", "Август"),
("сен", "Сентябрь"),
("окт", "Октябрь"),
("ноя", "Ноябрь"),
("дек", "Декабрь")]
expected = datetime(2015, 9, 10, 10, 20)
res = parse('10 Сентябрь 2015 10:20', parserinfo=rus_parserinfo())
assert res == expected
def testParseWithNulls(self):
# This relies on the from __future__ import unicode_literals, because
# explicitly specifying a unicode literal is a syntax error in Py 3.2
# May want to switch to u'...' if we ever drop Python 3.2 support.
pstring = '\x00\x00August 29, 1924'
assert parse(pstring) == datetime(1924, 8, 29)
def testDateCommandFormat(self):
self.assertEqual(parse("Thu Sep 25 10:36:28 BRST 2003",
tzinfos=self.tzinfos),
datetime(2003, 9, 25, 10, 36, 28,
tzinfo=self.brsttz))
def testDateCommandFormatReversed(self):
self.assertEqual(parse("2003 10:36:28 BRST 25 Sep Thu",
tzinfos=self.tzinfos),
datetime(2003, 9, 25, 10, 36, 28,
tzinfo=self.brsttz))
def testDateCommandFormatWithLong(self):
if PY2:
self.assertEqual(parse("Thu Sep 25 10:36:28 BRST 2003",
tzinfos={"BRST": long(-10800)}),
datetime(2003, 9, 25, 10, 36, 28,
tzinfo=self.brsttz))
def testISOFormatStrip2(self):
self.assertEqual(parse("2003-09-25T10:49:41+03:00"),
datetime(2003, 9, 25, 10, 49, 41,
tzinfo=tzoffset(None, 10800)))
def testISOStrippedFormatStrip2(self):
self.assertEqual(parse("20030925T104941+0300"),
datetime(2003, 9, 25, 10, 49, 41,
tzinfo=tzoffset(None, 10800)))
def testAMPMNoHour(self):
with pytest.raises(ParserError):
parse("AM")
with pytest.raises(ParserError):
parse("Jan 20, 2015 PM")
def testAMPMRange(self):
with pytest.raises(ParserError):
parse("13:44 AM")
with pytest.raises(ParserError):
parse("January 25, 1921 23:13 PM")
def testPertain(self):
self.assertEqual(parse("Sep 03", default=self.default),
datetime(2003, 9, 3))
self.assertEqual(parse("Sep of 03", default=self.default),
datetime(2003, 9, 25))
def testFuzzy(self):
s = "Today is 25 of September of 2003, exactly " \
"at 10:49:41 with timezone -03:00."
self.assertEqual(parse(s, fuzzy=True),
datetime(2003, 9, 25, 10, 49, 41,
tzinfo=self.brsttz))
def testFuzzyWithTokens(self):
s1 = "Today is 25 of September of 2003, exactly " \
"at 10:49:41 with timezone -03:00."
self.assertEqual(parse(s1, fuzzy_with_tokens=True),
(datetime(2003, 9, 25, 10, 49, 41,
tzinfo=self.brsttz),
('Today is ', 'of ', ', exactly at ',
' with timezone ', '.')))
s2 = "http://biz.yahoo.com/ipo/p/600221.html"
self.assertEqual(parse(s2, fuzzy_with_tokens=True),
(datetime(2060, 2, 21, 0, 0, 0),
('http://biz.yahoo.com/ipo/p/', '.html')))
def testFuzzyAMPMProblem(self):
# Sometimes fuzzy parsing results in AM/PM flag being set without
# hours - if it's fuzzy it should ignore that.
s1 = "I have a meeting on March 1, 1974."
s2 = "On June 8th, 2020, I am going to be the first man on Mars"
# Also don't want any erroneous AM or PMs changing the parsed time
s3 = "Meet me at the AM/PM on Sunset at 3:00 AM on December 3rd, 2003"
s4 = "Meet me at 3:00AM on December 3rd, 2003 at the AM/PM on Sunset"
self.assertEqual(parse(s1, fuzzy=True), datetime(1974, 3, 1))
self.assertEqual(parse(s2, fuzzy=True), datetime(2020, 6, 8))
self.assertEqual(parse(s3, fuzzy=True), datetime(2003, 12, 3, 3))
self.assertEqual(parse(s4, fuzzy=True), datetime(2003, 12, 3, 3))
def testFuzzyIgnoreAMPM(self):
s1 = "Jan 29, 1945 14:45 AM I going to see you there?"
with pytest.warns(UnknownTimezoneWarning):
res = parse(s1, fuzzy=True)
self.assertEqual(res, datetime(1945, 1, 29, 14, 45))
def testRandomFormat24(self):
self.assertEqual(parse("0:00 PM, PST", default=self.default,
ignoretz=True),
datetime(2003, 9, 25, 12, 0))
def testRandomFormat26(self):
with pytest.warns(UnknownTimezoneWarning):
res = parse("5:50 A.M. on June 13, 1990")
self.assertEqual(res, datetime(1990, 6, 13, 5, 50))
def testUnspecifiedDayFallback(self):
# Test that for an unspecified day, the fallback behavior is correct.
self.assertEqual(parse("April 2009", default=datetime(2010, 1, 31)),
datetime(2009, 4, 30))
def testUnspecifiedDayFallbackFebNoLeapYear(self):
self.assertEqual(parse("Feb 2007", default=datetime(2010, 1, 31)),
datetime(2007, 2, 28))
def testUnspecifiedDayFallbackFebLeapYear(self):
self.assertEqual(parse("Feb 2008", default=datetime(2010, 1, 31)),
datetime(2008, 2, 29))
def testErrorType01(self):
with pytest.raises(ParserError):
parse('shouldfail')
def testCorrectErrorOnFuzzyWithTokens(self):
assertRaisesRegex(self, ParserError, 'Unknown string format',
parse, '04/04/32/423', fuzzy_with_tokens=True)
assertRaisesRegex(self, ParserError, 'Unknown string format',
parse, '04/04/04 +32423', fuzzy_with_tokens=True)
assertRaisesRegex(self, ParserError, 'Unknown string format',
parse, '04/04/0d4', fuzzy_with_tokens=True)
def testIncreasingCTime(self):
# This test will check 200 different years, every month, every day,
# every hour, every minute, every second, and every weekday, using
# a delta of more or less 1 year, 1 month, 1 day, 1 minute and
# 1 second.
delta = timedelta(days=365+31+1, seconds=1+60+60*60)
dt = datetime(1900, 1, 1, 0, 0, 0, 0)
for i in range(200):
assert parse(dt.ctime()) == dt
dt += delta
def testIncreasingISOFormat(self):
delta = timedelta(days=365+31+1, seconds=1+60+60*60)
dt = datetime(1900, 1, 1, 0, 0, 0, 0)
for i in range(200):
assert parse(dt.isoformat()) == dt
dt += delta
def testMicrosecondsPrecisionError(self):
# Skip found out that sad precision problem. :-(
dt1 = parse("00:11:25.01")
dt2 = parse("00:12:10.01")
assert dt1.microsecond == 10000
assert dt2.microsecond == 10000
def testMicrosecondPrecisionErrorReturns(self):
# One more precision issue, discovered by Eric Brown. This should
# be the last one, as we're no longer using floating points.
for ms in [100001, 100000, 99999, 99998,
10001, 10000, 9999, 9998,
1001, 1000, 999, 998,
101, 100, 99, 98]:
dt = datetime(2008, 2, 27, 21, 26, 1, ms)
assert parse(dt.isoformat()) == dt
def testCustomParserInfo(self):
# Custom parser info wasn't working, as Michael Elsdörfer discovered.
from dateutil.parser import parserinfo, parser
class myparserinfo(parserinfo):
MONTHS = parserinfo.MONTHS[:]
MONTHS[0] = ("Foo", "Foo")
myparser = parser(myparserinfo())
dt = myparser.parse("01/Foo/2007")
assert dt == datetime(2007, 1, 1)
def testCustomParserShortDaynames(self):
# Horacio Hoyos discovered that day names shorter than 3 characters,
# for example two letter German day name abbreviations, don't work:
# https://github.com/dateutil/dateutil/issues/343
from dateutil.parser import parserinfo, parser
class GermanParserInfo(parserinfo):
WEEKDAYS = [("Mo", "Montag"),
("Di", "Dienstag"),
("Mi", "Mittwoch"),
("Do", "Donnerstag"),
("Fr", "Freitag"),
("Sa", "Samstag"),
("So", "Sonntag")]
myparser = parser(GermanParserInfo())
dt = myparser.parse("Sa 21. Jan 2017")
self.assertEqual(dt, datetime(2017, 1, 21))
def testNoYearFirstNoDayFirst(self):
dtstr = '090107'
# Should be MMDDYY
self.assertEqual(parse(dtstr),
datetime(2007, 9, 1))
self.assertEqual(parse(dtstr, yearfirst=False, dayfirst=False),
datetime(2007, 9, 1))
def testYearFirst(self):
dtstr = '090107'
# Should be MMDDYY
self.assertEqual(parse(dtstr, yearfirst=True),
datetime(2009, 1, 7))
self.assertEqual(parse(dtstr, yearfirst=True, dayfirst=False),
datetime(2009, 1, 7))
def testDayFirst(self):
dtstr = '090107'
# Should be DDMMYY
self.assertEqual(parse(dtstr, dayfirst=True),
datetime(2007, 1, 9))
self.assertEqual(parse(dtstr, yearfirst=False, dayfirst=True),
datetime(2007, 1, 9))
def testDayFirstYearFirst(self):
dtstr = '090107'
# Should be YYDDMM
self.assertEqual(parse(dtstr, yearfirst=True, dayfirst=True),
datetime(2009, 7, 1))
def testUnambiguousYearFirst(self):
dtstr = '2015 09 25'
self.assertEqual(parse(dtstr, yearfirst=True),
datetime(2015, 9, 25))
def testUnambiguousDayFirst(self):
dtstr = '2015 09 25'
self.assertEqual(parse(dtstr, dayfirst=True),
datetime(2015, 9, 25))
def testUnambiguousDayFirstYearFirst(self):
dtstr = '2015 09 25'
self.assertEqual(parse(dtstr, dayfirst=True, yearfirst=True),
datetime(2015, 9, 25))
def test_mstridx(self):
# See GH408
dtstr = '2015-15-May'
self.assertEqual(parse(dtstr),
datetime(2015, 5, 15))
def test_idx_check(self):
dtstr = '2017-07-17 06:15:'
# Pre-PR, the trailing colon will cause an IndexError at 824-825
# when checking `i < len_l` and then accessing `l[i+1]`
res = parse(dtstr, fuzzy=True)
assert res == datetime(2017, 7, 17, 6, 15)
def test_hmBY(self):
# See GH#483
dtstr = '02:17NOV2017'
res = parse(dtstr, default=self.default)
assert res == datetime(2017, 11, self.default.day, 2, 17)
def test_validate_hour(self):
# See GH353
invalid = "201A-01-01T23:58:39.239769+03:00"
with pytest.raises(ParserError):
parse(invalid)
def test_era_trailing_year(self):
dstr = 'AD2001'
res = parse(dstr)
assert res.year == 2001, res
def test_includes_timestr(self):
timestr = "2020-13-97T44:61:83"
try:
parse(timestr)
except ParserError as e:
assert e.args[1] == timestr
else:
pytest.fail("Failed to raise ParserError")
class TestOutOfBounds(object):
def test_no_year_zero(self):
with pytest.raises(ParserError):
parse("0000 Jun 20")
def test_out_of_bound_day(self):
with pytest.raises(ParserError):
parse("Feb 30, 2007")
def test_illegal_month_error(self):
with pytest.raises(ParserError):
parse("0-100")
def test_day_sanity(self, fuzzy):
dstr = "2014-15-25"
with pytest.raises(ParserError):
parse(dstr, fuzzy=fuzzy)
def test_minute_sanity(self, fuzzy):
dstr = "2014-02-28 22:64"
with pytest.raises(ParserError):
parse(dstr, fuzzy=fuzzy)
def test_hour_sanity(self, fuzzy):
dstr = "2014-02-28 25:16 PM"
with pytest.raises(ParserError):
parse(dstr, fuzzy=fuzzy)
def test_second_sanity(self, fuzzy):
dstr = "2014-02-28 22:14:64"
with pytest.raises(ParserError):
parse(dstr, fuzzy=fuzzy)
class TestParseUnimplementedCases(object):
@pytest.mark.xfail
def test_somewhat_ambiguous_string(self):
# Ref: github issue #487
# The parser is choosing the wrong part for hour
# causing datetime to raise an exception.
dtstr = '1237 PM BRST Mon Oct 30 2017'
res = parse(dtstr, tzinfo=self.tzinfos)
assert res == datetime(2017, 10, 30, 12, 37, tzinfo=self.tzinfos)
@pytest.mark.xfail
def test_YmdH_M_S(self):
# found in nasdaq's ftp data
dstr = '1991041310:19:24'
expected = datetime(1991, 4, 13, 10, 19, 24)
res = parse(dstr)
assert res == expected, (res, expected)
@pytest.mark.xfail
def test_first_century(self):
dstr = '0031 Nov 03'
expected = datetime(31, 11, 3)
res = parse(dstr)
assert res == expected, res
@pytest.mark.xfail
def test_era_trailing_year_with_dots(self):
dstr = 'A.D.2001'
res = parse(dstr)
assert res.year == 2001, res
@pytest.mark.xfail
def test_ad_nospace(self):
expected = datetime(6, 5, 19)
for dstr in [' 6AD May 19', ' 06AD May 19',
' 006AD May 19', ' 0006AD May 19']:
res = parse(dstr)
assert res == expected, (dstr, res)
@pytest.mark.xfail
def test_four_letter_day(self):
dstr = 'Frid Dec 30, 2016'
expected = datetime(2016, 12, 30)
res = parse(dstr)
assert res == expected
@pytest.mark.xfail
def test_non_date_number(self):
dstr = '1,700'
with pytest.raises(ParserError):
parse(dstr)
@pytest.mark.xfail
def test_on_era(self):
# This could be classified as an "eras" test, but the relevant part
# about this is the ` on `
dstr = '2:15 PM on January 2nd 1973 A.D.'
expected = datetime(1973, 1, 2, 14, 15)
res = parse(dstr)
assert res == expected
@pytest.mark.xfail
def test_extraneous_year(self):
# This was found in the wild at insidertrading.org
dstr = "2011 MARTIN CHILDREN'S IRREVOCABLE TRUST u/a/d NOVEMBER 7, 2012"
res = parse(dstr, fuzzy_with_tokens=True)
expected = datetime(2012, 11, 7)
assert res == expected
@pytest.mark.xfail
def test_extraneous_year_tokens(self):
# This was found in the wild at insidertrading.org
# Unlike in the case above, identifying the first "2012" as the year
# would not be a problem, but inferring that the latter 2012 is hhmm
# is a problem.
dstr = "2012 MARTIN CHILDREN'S IRREVOCABLE TRUST u/a/d NOVEMBER 7, 2012"
expected = datetime(2012, 11, 7)
(res, tokens) = parse(dstr, fuzzy_with_tokens=True)
assert res == expected
assert tokens == ("2012 MARTIN CHILDREN'S IRREVOCABLE TRUST u/a/d ",)
@pytest.mark.xfail
def test_extraneous_year2(self):
# This was found in the wild at insidertrading.org
dstr = ("Berylson Amy Smith 1998 Grantor Retained Annuity Trust "
"u/d/t November 2, 1998 f/b/o Jennifer L Berylson")
res = parse(dstr, fuzzy_with_tokens=True)
expected = datetime(1998, 11, 2)
assert res == expected
@pytest.mark.xfail
def test_extraneous_year3(self):
# This was found in the wild at insidertrading.org
dstr = "SMITH R & WEISS D 94 CHILD TR FBO M W SMITH UDT 12/1/1994"
res = parse(dstr, fuzzy_with_tokens=True)
expected = datetime(1994, 12, 1)
assert res == expected
@pytest.mark.xfail
def test_unambiguous_YYYYMM(self):
# 171206 can be parsed as YYMMDD. However, 201712 cannot be parsed
# as instance of YYMMDD and parser could fallback to YYYYMM format.
dstr = "201712"
res = parse(dstr)
expected = datetime(2017, 12, 1)
assert res == expected
@pytest.mark.xfail
def test_extraneous_numerical_content(self):
# ref: https://github.com/dateutil/dateutil/issues/1029
# parser interprets price and percentage as parts of the date
dstr = "£14.99 (25% off, until April 20)"
res = parse(dstr, fuzzy=True, default=datetime(2000, 1, 1))
expected = datetime(2000, 4, 20)
assert res == expected
@pytest.mark.skipif(IS_WIN, reason="Windows does not use TZ var")
class TestTZVar(object):
def test_parse_unambiguous_nonexistent_local(self):
# When dates are specified "EST" even when they should be "EDT" in the
# local time zone, we should still assign the local time zone
with TZEnvContext('EST+5EDT,M3.2.0/2,M11.1.0/2'):
dt_exp = datetime(2011, 8, 1, 12, 30, tzinfo=tz.tzlocal())
dt = parse('2011-08-01T12:30 EST')
assert dt.tzname() == 'EDT'
assert dt == dt_exp
def test_tzlocal_in_gmt(self):
# GH #318
with TZEnvContext('GMT0BST,M3.5.0,M10.5.0'):
# This is an imaginary datetime in tz.tzlocal() but should still
# parse using the GMT-as-alias-for-UTC rule
dt = parse('2004-05-01T12:00 GMT')
dt_exp = datetime(2004, 5, 1, 12, tzinfo=tz.UTC)
assert dt == dt_exp
def test_tzlocal_parse_fold(self):
# One manifestion of GH #318
with TZEnvContext('EST+5EDT,M3.2.0/2,M11.1.0/2'):
dt_exp = datetime(2011, 11, 6, 1, 30, tzinfo=tz.tzlocal())
dt_exp = tz.enfold(dt_exp, fold=1)
dt = parse('2011-11-06T01:30 EST')
# Because this is ambiguous, until `tz.tzlocal() is tz.tzlocal()`
# we'll just check the attributes we care about rather than
# dt == dt_exp
assert dt.tzname() == dt_exp.tzname()
assert dt.replace(tzinfo=None) == dt_exp.replace(tzinfo=None)
assert getattr(dt, 'fold') == getattr(dt_exp, 'fold')
assert dt.astimezone(tz.UTC) == dt_exp.astimezone(tz.UTC)
def test_parse_tzinfos_fold():
NYC = tz.gettz('America/New_York')
tzinfos = {'EST': NYC, 'EDT': NYC}
dt_exp = tz.enfold(datetime(2011, 11, 6, 1, 30, tzinfo=NYC), fold=1)
dt = parse('2011-11-06T01:30 EST', tzinfos=tzinfos)
assert dt == dt_exp
assert dt.tzinfo is dt_exp.tzinfo
assert getattr(dt, 'fold') == getattr(dt_exp, 'fold')
assert dt.astimezone(tz.UTC) == dt_exp.astimezone(tz.UTC)
@pytest.mark.parametrize('dtstr,dt', [
('5.6h', datetime(2003, 9, 25, 5, 36)),
('5.6m', datetime(2003, 9, 25, 0, 5, 36)),
# '5.6s' never had a rounding problem, test added for completeness
('5.6s', datetime(2003, 9, 25, 0, 0, 5, 600000))
])
def test_rounding_floatlike_strings(dtstr, dt):
assert parse(dtstr, default=datetime(2003, 9, 25)) == dt
@pytest.mark.parametrize('value', ['1: test', 'Nan'])
def test_decimal_error(value):
# GH 632, GH 662 - decimal.Decimal raises some non-ParserError exception
# when constructed with an invalid value
with pytest.raises(ParserError):
parse(value)
def test_parsererror_repr():
# GH 991 — the __repr__ was not properly indented and so was never defined.
# This tests the current behavior of the ParserError __repr__, but the
# precise format is not guaranteed to be stable and may change even in
# minor versions. This test exists to avoid regressions.
s = repr(ParserError("Problem with string: %s", "2019-01-01"))
assert s == "ParserError('Problem with string: %s', '2019-01-01')"

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# -*- coding: utf-8 -*-
from __future__ import unicode_literals
from ._common import NotAValue
import calendar
from datetime import datetime, date, timedelta
import unittest
import pytest
from dateutil.relativedelta import relativedelta, MO, TU, WE, FR, SU
class RelativeDeltaTest(unittest.TestCase):
now = datetime(2003, 9, 17, 20, 54, 47, 282310)
today = date(2003, 9, 17)
def testInheritance(self):
# Ensure that relativedelta is inheritance-friendly.
class rdChildClass(relativedelta):
pass
ccRD = rdChildClass(years=1, months=1, days=1, leapdays=1, weeks=1,
hours=1, minutes=1, seconds=1, microseconds=1)
rd = relativedelta(years=1, months=1, days=1, leapdays=1, weeks=1,
hours=1, minutes=1, seconds=1, microseconds=1)
self.assertEqual(type(ccRD + rd), type(ccRD),
msg='Addition does not inherit type.')
self.assertEqual(type(ccRD - rd), type(ccRD),
msg='Subtraction does not inherit type.')
self.assertEqual(type(-ccRD), type(ccRD),
msg='Negation does not inherit type.')
self.assertEqual(type(ccRD * 5.0), type(ccRD),
msg='Multiplication does not inherit type.')
self.assertEqual(type(ccRD / 5.0), type(ccRD),
msg='Division does not inherit type.')
def testMonthEndMonthBeginning(self):
self.assertEqual(relativedelta(datetime(2003, 1, 31, 23, 59, 59),
datetime(2003, 3, 1, 0, 0, 0)),
relativedelta(months=-1, seconds=-1))
self.assertEqual(relativedelta(datetime(2003, 3, 1, 0, 0, 0),
datetime(2003, 1, 31, 23, 59, 59)),
relativedelta(months=1, seconds=1))
def testMonthEndMonthBeginningLeapYear(self):
self.assertEqual(relativedelta(datetime(2012, 1, 31, 23, 59, 59),
datetime(2012, 3, 1, 0, 0, 0)),
relativedelta(months=-1, seconds=-1))
self.assertEqual(relativedelta(datetime(2003, 3, 1, 0, 0, 0),
datetime(2003, 1, 31, 23, 59, 59)),
relativedelta(months=1, seconds=1))
def testNextMonth(self):
self.assertEqual(self.now+relativedelta(months=+1),
datetime(2003, 10, 17, 20, 54, 47, 282310))
def testNextMonthPlusOneWeek(self):
self.assertEqual(self.now+relativedelta(months=+1, weeks=+1),
datetime(2003, 10, 24, 20, 54, 47, 282310))
def testNextMonthPlusOneWeek10am(self):
self.assertEqual(self.today +
relativedelta(months=+1, weeks=+1, hour=10),
datetime(2003, 10, 24, 10, 0))
def testNextMonthPlusOneWeek10amDiff(self):
self.assertEqual(relativedelta(datetime(2003, 10, 24, 10, 0),
self.today),
relativedelta(months=+1, days=+7, hours=+10))
def testOneMonthBeforeOneYear(self):
self.assertEqual(self.now+relativedelta(years=+1, months=-1),
datetime(2004, 8, 17, 20, 54, 47, 282310))
def testMonthsOfDiffNumOfDays(self):
self.assertEqual(date(2003, 1, 27)+relativedelta(months=+1),
date(2003, 2, 27))
self.assertEqual(date(2003, 1, 31)+relativedelta(months=+1),
date(2003, 2, 28))
self.assertEqual(date(2003, 1, 31)+relativedelta(months=+2),
date(2003, 3, 31))
def testMonthsOfDiffNumOfDaysWithYears(self):
self.assertEqual(date(2000, 2, 28)+relativedelta(years=+1),
date(2001, 2, 28))
self.assertEqual(date(2000, 2, 29)+relativedelta(years=+1),
date(2001, 2, 28))
self.assertEqual(date(1999, 2, 28)+relativedelta(years=+1),
date(2000, 2, 28))
self.assertEqual(date(1999, 3, 1)+relativedelta(years=+1),
date(2000, 3, 1))
self.assertEqual(date(1999, 3, 1)+relativedelta(years=+1),
date(2000, 3, 1))
self.assertEqual(date(2001, 2, 28)+relativedelta(years=-1),
date(2000, 2, 28))
self.assertEqual(date(2001, 3, 1)+relativedelta(years=-1),
date(2000, 3, 1))
def testNextFriday(self):
self.assertEqual(self.today+relativedelta(weekday=FR),
date(2003, 9, 19))
def testNextFridayInt(self):
self.assertEqual(self.today+relativedelta(weekday=calendar.FRIDAY),
date(2003, 9, 19))
def testLastFridayInThisMonth(self):
self.assertEqual(self.today+relativedelta(day=31, weekday=FR(-1)),
date(2003, 9, 26))
def testLastDayOfFebruary(self):
self.assertEqual(date(2021, 2, 1) + relativedelta(day=31),
date(2021, 2, 28))
def testLastDayOfFebruaryLeapYear(self):
self.assertEqual(date(2020, 2, 1) + relativedelta(day=31),
date(2020, 2, 29))
def testNextWednesdayIsToday(self):
self.assertEqual(self.today+relativedelta(weekday=WE),
date(2003, 9, 17))
def testNextWednesdayNotToday(self):
self.assertEqual(self.today+relativedelta(days=+1, weekday=WE),
date(2003, 9, 24))
def testAddMoreThan12Months(self):
self.assertEqual(date(2003, 12, 1) + relativedelta(months=+13),
date(2005, 1, 1))
def testAddNegativeMonths(self):
self.assertEqual(date(2003, 1, 1) + relativedelta(months=-2),
date(2002, 11, 1))
def test15thISOYearWeek(self):
self.assertEqual(date(2003, 1, 1) +
relativedelta(day=4, weeks=+14, weekday=MO(-1)),
date(2003, 4, 7))
def testMillenniumAge(self):
self.assertEqual(relativedelta(self.now, date(2001, 1, 1)),
relativedelta(years=+2, months=+8, days=+16,
hours=+20, minutes=+54, seconds=+47,
microseconds=+282310))
def testJohnAge(self):
self.assertEqual(relativedelta(self.now,
datetime(1978, 4, 5, 12, 0)),
relativedelta(years=+25, months=+5, days=+12,
hours=+8, minutes=+54, seconds=+47,
microseconds=+282310))
def testJohnAgeWithDate(self):
self.assertEqual(relativedelta(self.today,
datetime(1978, 4, 5, 12, 0)),
relativedelta(years=+25, months=+5, days=+11,
hours=+12))
def testYearDay(self):
self.assertEqual(date(2003, 1, 1)+relativedelta(yearday=260),
date(2003, 9, 17))
self.assertEqual(date(2002, 1, 1)+relativedelta(yearday=260),
date(2002, 9, 17))
self.assertEqual(date(2000, 1, 1)+relativedelta(yearday=260),
date(2000, 9, 16))
self.assertEqual(self.today+relativedelta(yearday=261),
date(2003, 9, 18))
def testYearDayBug(self):
# Tests a problem reported by Adam Ryan.
self.assertEqual(date(2010, 1, 1)+relativedelta(yearday=15),
date(2010, 1, 15))
def testNonLeapYearDay(self):
self.assertEqual(date(2003, 1, 1)+relativedelta(nlyearday=260),
date(2003, 9, 17))
self.assertEqual(date(2002, 1, 1)+relativedelta(nlyearday=260),
date(2002, 9, 17))
self.assertEqual(date(2000, 1, 1)+relativedelta(nlyearday=260),
date(2000, 9, 17))
self.assertEqual(self.today+relativedelta(yearday=261),
date(2003, 9, 18))
def testAddition(self):
self.assertEqual(relativedelta(days=10) +
relativedelta(years=1, months=2, days=3, hours=4,
minutes=5, microseconds=6),
relativedelta(years=1, months=2, days=13, hours=4,
minutes=5, microseconds=6))
def testAbsoluteAddition(self):
self.assertEqual(relativedelta() + relativedelta(day=0, hour=0),
relativedelta(day=0, hour=0))
self.assertEqual(relativedelta(day=0, hour=0) + relativedelta(),
relativedelta(day=0, hour=0))
def testAdditionToDatetime(self):
self.assertEqual(datetime(2000, 1, 1) + relativedelta(days=1),
datetime(2000, 1, 2))
def testRightAdditionToDatetime(self):
self.assertEqual(relativedelta(days=1) + datetime(2000, 1, 1),
datetime(2000, 1, 2))
def testAdditionInvalidType(self):
with self.assertRaises(TypeError):
relativedelta(days=3) + 9
def testAdditionUnsupportedType(self):
# For unsupported types that define their own comparators, etc.
self.assertIs(relativedelta(days=1) + NotAValue, NotAValue)
def testAdditionFloatValue(self):
self.assertEqual(datetime(2000, 1, 1) + relativedelta(days=float(1)),
datetime(2000, 1, 2))
self.assertEqual(datetime(2000, 1, 1) + relativedelta(months=float(1)),
datetime(2000, 2, 1))
self.assertEqual(datetime(2000, 1, 1) + relativedelta(years=float(1)),
datetime(2001, 1, 1))
def testAdditionFloatFractionals(self):
self.assertEqual(datetime(2000, 1, 1, 0) +
relativedelta(days=float(0.5)),
datetime(2000, 1, 1, 12))
self.assertEqual(datetime(2000, 1, 1, 0, 0) +
relativedelta(hours=float(0.5)),
datetime(2000, 1, 1, 0, 30))
self.assertEqual(datetime(2000, 1, 1, 0, 0, 0) +
relativedelta(minutes=float(0.5)),
datetime(2000, 1, 1, 0, 0, 30))
self.assertEqual(datetime(2000, 1, 1, 0, 0, 0, 0) +
relativedelta(seconds=float(0.5)),
datetime(2000, 1, 1, 0, 0, 0, 500000))
self.assertEqual(datetime(2000, 1, 1, 0, 0, 0, 0) +
relativedelta(microseconds=float(500000.25)),
datetime(2000, 1, 1, 0, 0, 0, 500000))
def testSubtraction(self):
self.assertEqual(relativedelta(days=10) -
relativedelta(years=1, months=2, days=3, hours=4,
minutes=5, microseconds=6),
relativedelta(years=-1, months=-2, days=7, hours=-4,
minutes=-5, microseconds=-6))
def testRightSubtractionFromDatetime(self):
self.assertEqual(datetime(2000, 1, 2) - relativedelta(days=1),
datetime(2000, 1, 1))
def testSubractionWithDatetime(self):
self.assertRaises(TypeError, lambda x, y: x - y,
(relativedelta(days=1), datetime(2000, 1, 1)))
def testSubtractionInvalidType(self):
with self.assertRaises(TypeError):
relativedelta(hours=12) - 14
def testSubtractionUnsupportedType(self):
self.assertIs(relativedelta(days=1) + NotAValue, NotAValue)
def testMultiplication(self):
self.assertEqual(datetime(2000, 1, 1) + relativedelta(days=1) * 28,
datetime(2000, 1, 29))
self.assertEqual(datetime(2000, 1, 1) + 28 * relativedelta(days=1),
datetime(2000, 1, 29))
def testMultiplicationUnsupportedType(self):
self.assertIs(relativedelta(days=1) * NotAValue, NotAValue)
def testDivision(self):
self.assertEqual(datetime(2000, 1, 1) + relativedelta(days=28) / 28,
datetime(2000, 1, 2))
def testDivisionUnsupportedType(self):
self.assertIs(relativedelta(days=1) / NotAValue, NotAValue)
def testBoolean(self):
self.assertFalse(relativedelta(days=0))
self.assertTrue(relativedelta(days=1))
def testAbsoluteValueNegative(self):
rd_base = relativedelta(years=-1, months=-5, days=-2, hours=-3,
minutes=-5, seconds=-2, microseconds=-12)
rd_expected = relativedelta(years=1, months=5, days=2, hours=3,
minutes=5, seconds=2, microseconds=12)
self.assertEqual(abs(rd_base), rd_expected)
def testAbsoluteValuePositive(self):
rd_base = relativedelta(years=1, months=5, days=2, hours=3,
minutes=5, seconds=2, microseconds=12)
rd_expected = rd_base
self.assertEqual(abs(rd_base), rd_expected)
def testComparison(self):
d1 = relativedelta(years=1, months=1, days=1, leapdays=0, hours=1,
minutes=1, seconds=1, microseconds=1)
d2 = relativedelta(years=1, months=1, days=1, leapdays=0, hours=1,
minutes=1, seconds=1, microseconds=1)
d3 = relativedelta(years=1, months=1, days=1, leapdays=0, hours=1,
minutes=1, seconds=1, microseconds=2)
self.assertEqual(d1, d2)
self.assertNotEqual(d1, d3)
def testInequalityTypeMismatch(self):
# Different type
self.assertFalse(relativedelta(year=1) == 19)
def testInequalityUnsupportedType(self):
self.assertIs(relativedelta(hours=3) == NotAValue, NotAValue)
def testInequalityWeekdays(self):
# Different weekdays
no_wday = relativedelta(year=1997, month=4)
wday_mo_1 = relativedelta(year=1997, month=4, weekday=MO(+1))
wday_mo_2 = relativedelta(year=1997, month=4, weekday=MO(+2))
wday_tu = relativedelta(year=1997, month=4, weekday=TU)
self.assertTrue(wday_mo_1 == wday_mo_1)
self.assertFalse(no_wday == wday_mo_1)
self.assertFalse(wday_mo_1 == no_wday)
self.assertFalse(wday_mo_1 == wday_mo_2)
self.assertFalse(wday_mo_2 == wday_mo_1)
self.assertFalse(wday_mo_1 == wday_tu)
self.assertFalse(wday_tu == wday_mo_1)
def testMonthOverflow(self):
self.assertEqual(relativedelta(months=273),
relativedelta(years=22, months=9))
def testWeeks(self):
# Test that the weeks property is working properly.
rd = relativedelta(years=4, months=2, weeks=8, days=6)
self.assertEqual((rd.weeks, rd.days), (8, 8 * 7 + 6))
rd.weeks = 3
self.assertEqual((rd.weeks, rd.days), (3, 3 * 7 + 6))
def testRelativeDeltaRepr(self):
self.assertEqual(repr(relativedelta(years=1, months=-1, days=15)),
'relativedelta(years=+1, months=-1, days=+15)')
self.assertEqual(repr(relativedelta(months=14, seconds=-25)),
'relativedelta(years=+1, months=+2, seconds=-25)')
self.assertEqual(repr(relativedelta(month=3, hour=3, weekday=SU(3))),
'relativedelta(month=3, weekday=SU(+3), hour=3)')
def testRelativeDeltaFractionalYear(self):
with self.assertRaises(ValueError):
relativedelta(years=1.5)
def testRelativeDeltaFractionalMonth(self):
with self.assertRaises(ValueError):
relativedelta(months=1.5)
def testRelativeDeltaInvalidDatetimeObject(self):
with self.assertRaises(TypeError):
relativedelta(dt1='2018-01-01', dt2='2018-01-02')
with self.assertRaises(TypeError):
relativedelta(dt1=datetime(2018, 1, 1), dt2='2018-01-02')
with self.assertRaises(TypeError):
relativedelta(dt1='2018-01-01', dt2=datetime(2018, 1, 2))
def testRelativeDeltaFractionalAbsolutes(self):
# Fractional absolute values will soon be unsupported,
# check for the deprecation warning.
with pytest.warns(DeprecationWarning):
relativedelta(year=2.86)
with pytest.warns(DeprecationWarning):
relativedelta(month=1.29)
with pytest.warns(DeprecationWarning):
relativedelta(day=0.44)
with pytest.warns(DeprecationWarning):
relativedelta(hour=23.98)
with pytest.warns(DeprecationWarning):
relativedelta(minute=45.21)
with pytest.warns(DeprecationWarning):
relativedelta(second=13.2)
with pytest.warns(DeprecationWarning):
relativedelta(microsecond=157221.93)
def testRelativeDeltaFractionalRepr(self):
rd = relativedelta(years=3, months=-2, days=1.25)
self.assertEqual(repr(rd),
'relativedelta(years=+3, months=-2, days=+1.25)')
rd = relativedelta(hours=0.5, seconds=9.22)
self.assertEqual(repr(rd),
'relativedelta(hours=+0.5, seconds=+9.22)')
def testRelativeDeltaFractionalWeeks(self):
# Equivalent to days=8, hours=18
rd = relativedelta(weeks=1.25)
d1 = datetime(2009, 9, 3, 0, 0)
self.assertEqual(d1 + rd,
datetime(2009, 9, 11, 18))
def testRelativeDeltaFractionalDays(self):
rd1 = relativedelta(days=1.48)
d1 = datetime(2009, 9, 3, 0, 0)
self.assertEqual(d1 + rd1,
datetime(2009, 9, 4, 11, 31, 12))
rd2 = relativedelta(days=1.5)
self.assertEqual(d1 + rd2,
datetime(2009, 9, 4, 12, 0, 0))
def testRelativeDeltaFractionalHours(self):
rd = relativedelta(days=1, hours=12.5)
d1 = datetime(2009, 9, 3, 0, 0)
self.assertEqual(d1 + rd,
datetime(2009, 9, 4, 12, 30, 0))
def testRelativeDeltaFractionalMinutes(self):
rd = relativedelta(hours=1, minutes=30.5)
d1 = datetime(2009, 9, 3, 0, 0)
self.assertEqual(d1 + rd,
datetime(2009, 9, 3, 1, 30, 30))
def testRelativeDeltaFractionalSeconds(self):
rd = relativedelta(hours=5, minutes=30, seconds=30.5)
d1 = datetime(2009, 9, 3, 0, 0)
self.assertEqual(d1 + rd,
datetime(2009, 9, 3, 5, 30, 30, 500000))
def testRelativeDeltaFractionalPositiveOverflow(self):
# Equivalent to (days=1, hours=14)
rd1 = relativedelta(days=1.5, hours=2)
d1 = datetime(2009, 9, 3, 0, 0)
self.assertEqual(d1 + rd1,
datetime(2009, 9, 4, 14, 0, 0))
# Equivalent to (days=1, hours=14, minutes=45)
rd2 = relativedelta(days=1.5, hours=2.5, minutes=15)
d1 = datetime(2009, 9, 3, 0, 0)
self.assertEqual(d1 + rd2,
datetime(2009, 9, 4, 14, 45))
# Carry back up - equivalent to (days=2, hours=2, minutes=0, seconds=1)
rd3 = relativedelta(days=1.5, hours=13, minutes=59.5, seconds=31)
self.assertEqual(d1 + rd3,
datetime(2009, 9, 5, 2, 0, 1))
def testRelativeDeltaFractionalNegativeDays(self):
# Equivalent to (days=-1, hours=-1)
rd1 = relativedelta(days=-1.5, hours=11)
d1 = datetime(2009, 9, 3, 12, 0)
self.assertEqual(d1 + rd1,
datetime(2009, 9, 2, 11, 0, 0))
# Equivalent to (days=-1, hours=-9)
rd2 = relativedelta(days=-1.25, hours=-3)
self.assertEqual(d1 + rd2,
datetime(2009, 9, 2, 3))
def testRelativeDeltaNormalizeFractionalDays(self):
# Equivalent to (days=2, hours=18)
rd1 = relativedelta(days=2.75)
self.assertEqual(rd1.normalized(), relativedelta(days=2, hours=18))
# Equivalent to (days=1, hours=11, minutes=31, seconds=12)
rd2 = relativedelta(days=1.48)
self.assertEqual(rd2.normalized(),
relativedelta(days=1, hours=11, minutes=31, seconds=12))
def testRelativeDeltaNormalizeFractionalDays2(self):
# Equivalent to (hours=1, minutes=30)
rd1 = relativedelta(hours=1.5)
self.assertEqual(rd1.normalized(), relativedelta(hours=1, minutes=30))
# Equivalent to (hours=3, minutes=17, seconds=5, microseconds=100)
rd2 = relativedelta(hours=3.28472225)
self.assertEqual(rd2.normalized(),
relativedelta(hours=3, minutes=17, seconds=5, microseconds=100))
def testRelativeDeltaNormalizeFractionalMinutes(self):
# Equivalent to (minutes=15, seconds=36)
rd1 = relativedelta(minutes=15.6)
self.assertEqual(rd1.normalized(),
relativedelta(minutes=15, seconds=36))
# Equivalent to (minutes=25, seconds=20, microseconds=25000)
rd2 = relativedelta(minutes=25.33375)
self.assertEqual(rd2.normalized(),
relativedelta(minutes=25, seconds=20, microseconds=25000))
def testRelativeDeltaNormalizeFractionalSeconds(self):
# Equivalent to (seconds=45, microseconds=25000)
rd1 = relativedelta(seconds=45.025)
self.assertEqual(rd1.normalized(),
relativedelta(seconds=45, microseconds=25000))
def testRelativeDeltaFractionalPositiveOverflow2(self):
# Equivalent to (days=1, hours=14)
rd1 = relativedelta(days=1.5, hours=2)
self.assertEqual(rd1.normalized(),
relativedelta(days=1, hours=14))
# Equivalent to (days=1, hours=14, minutes=45)
rd2 = relativedelta(days=1.5, hours=2.5, minutes=15)
self.assertEqual(rd2.normalized(),
relativedelta(days=1, hours=14, minutes=45))
# Carry back up - equivalent to:
# (days=2, hours=2, minutes=0, seconds=2, microseconds=3)
rd3 = relativedelta(days=1.5, hours=13, minutes=59.50045,
seconds=31.473, microseconds=500003)
self.assertEqual(rd3.normalized(),
relativedelta(days=2, hours=2, minutes=0,
seconds=2, microseconds=3))
def testRelativeDeltaFractionalNegativeOverflow(self):
# Equivalent to (days=-1)
rd1 = relativedelta(days=-0.5, hours=-12)
self.assertEqual(rd1.normalized(),
relativedelta(days=-1))
# Equivalent to (days=-1)
rd2 = relativedelta(days=-1.5, hours=12)
self.assertEqual(rd2.normalized(),
relativedelta(days=-1))
# Equivalent to (days=-1, hours=-14, minutes=-45)
rd3 = relativedelta(days=-1.5, hours=-2.5, minutes=-15)
self.assertEqual(rd3.normalized(),
relativedelta(days=-1, hours=-14, minutes=-45))
# Equivalent to (days=-1, hours=-14, minutes=+15)
rd4 = relativedelta(days=-1.5, hours=-2.5, minutes=45)
self.assertEqual(rd4.normalized(),
relativedelta(days=-1, hours=-14, minutes=+15))
# Carry back up - equivalent to:
# (days=-2, hours=-2, minutes=0, seconds=-2, microseconds=-3)
rd3 = relativedelta(days=-1.5, hours=-13, minutes=-59.50045,
seconds=-31.473, microseconds=-500003)
self.assertEqual(rd3.normalized(),
relativedelta(days=-2, hours=-2, minutes=0,
seconds=-2, microseconds=-3))
def testInvalidYearDay(self):
with self.assertRaises(ValueError):
relativedelta(yearday=367)
def testAddTimedeltaToUnpopulatedRelativedelta(self):
td = timedelta(
days=1,
seconds=1,
microseconds=1,
milliseconds=1,
minutes=1,
hours=1,
weeks=1
)
expected = relativedelta(
weeks=1,
days=1,
hours=1,
minutes=1,
seconds=1,
microseconds=1001
)
self.assertEqual(expected, relativedelta() + td)
def testAddTimedeltaToPopulatedRelativeDelta(self):
td = timedelta(
days=1,
seconds=1,
microseconds=1,
milliseconds=1,
minutes=1,
hours=1,
weeks=1
)
rd = relativedelta(
year=1,
month=1,
day=1,
hour=1,
minute=1,
second=1,
microsecond=1,
years=1,
months=1,
days=1,
weeks=1,
hours=1,
minutes=1,
seconds=1,
microseconds=1
)
expected = relativedelta(
year=1,
month=1,
day=1,
hour=1,
minute=1,
second=1,
microsecond=1,
years=1,
months=1,
weeks=2,
days=2,
hours=2,
minutes=2,
seconds=2,
microseconds=1002,
)
self.assertEqual(expected, rd + td)
def testHashable(self):
try:
{relativedelta(minute=1): 'test'}
except:
self.fail("relativedelta() failed to hash!")
class RelativeDeltaWeeksPropertyGetterTest(unittest.TestCase):
"""Test the weeks property getter"""
def test_one_day(self):
rd = relativedelta(days=1)
self.assertEqual(rd.days, 1)
self.assertEqual(rd.weeks, 0)
def test_minus_one_day(self):
rd = relativedelta(days=-1)
self.assertEqual(rd.days, -1)
self.assertEqual(rd.weeks, 0)
def test_height_days(self):
rd = relativedelta(days=8)
self.assertEqual(rd.days, 8)
self.assertEqual(rd.weeks, 1)
def test_minus_height_days(self):
rd = relativedelta(days=-8)
self.assertEqual(rd.days, -8)
self.assertEqual(rd.weeks, -1)
class RelativeDeltaWeeksPropertySetterTest(unittest.TestCase):
"""Test the weeks setter which makes a "smart" update of the days attribute"""
def test_one_day_set_one_week(self):
rd = relativedelta(days=1)
rd.weeks = 1 # add 7 days
self.assertEqual(rd.days, 8)
self.assertEqual(rd.weeks, 1)
def test_minus_one_day_set_one_week(self):
rd = relativedelta(days=-1)
rd.weeks = 1 # add 7 days
self.assertEqual(rd.days, 6)
self.assertEqual(rd.weeks, 0)
def test_height_days_set_minus_one_week(self):
rd = relativedelta(days=8)
rd.weeks = -1 # change from 1 week, 1 day to -1 week, 1 day
self.assertEqual(rd.days, -6)
self.assertEqual(rd.weeks, 0)
def test_minus_height_days_set_minus_one_week(self):
rd = relativedelta(days=-8)
rd.weeks = -1 # does not change anything
self.assertEqual(rd.days, -8)
self.assertEqual(rd.weeks, -1)
# vim:ts=4:sw=4:et

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# -*- coding: utf-8 -*-
from __future__ import unicode_literals
from datetime import timedelta, datetime
from dateutil import tz
from dateutil import utils
from dateutil.tz import UTC
from dateutil.utils import within_delta
from freezegun import freeze_time
NYC = tz.gettz("America/New_York")
@freeze_time(datetime(2014, 12, 15, 1, 21, 33, 4003))
def test_utils_today():
assert utils.today() == datetime(2014, 12, 15, 0, 0, 0)
@freeze_time(datetime(2014, 12, 15, 12), tz_offset=5)
def test_utils_today_tz_info():
assert utils.today(NYC) == datetime(2014, 12, 15, 0, 0, 0, tzinfo=NYC)
@freeze_time(datetime(2014, 12, 15, 23), tz_offset=5)
def test_utils_today_tz_info_different_day():
assert utils.today(UTC) == datetime(2014, 12, 16, 0, 0, 0, tzinfo=UTC)
def test_utils_default_tz_info_naive():
dt = datetime(2014, 9, 14, 9, 30)
assert utils.default_tzinfo(dt, NYC).tzinfo is NYC
def test_utils_default_tz_info_aware():
dt = datetime(2014, 9, 14, 9, 30, tzinfo=UTC)
assert utils.default_tzinfo(dt, NYC).tzinfo is UTC
def test_utils_within_delta():
d1 = datetime(2016, 1, 1, 12, 14, 1, 9)
d2 = d1.replace(microsecond=15)
assert within_delta(d1, d2, timedelta(seconds=1))
assert not within_delta(d1, d2, timedelta(microseconds=1))
def test_utils_within_delta_with_negative_delta():
d1 = datetime(2016, 1, 1)
d2 = datetime(2015, 12, 31)
assert within_delta(d2, d1, timedelta(days=-1))

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@@ -0,0 +1,12 @@
# -*- coding: utf-8 -*-
from .tz import *
from .tz import __doc__
__all__ = ["tzutc", "tzoffset", "tzlocal", "tzfile", "tzrange",
"tzstr", "tzical", "tzwin", "tzwinlocal", "gettz",
"enfold", "datetime_ambiguous", "datetime_exists",
"resolve_imaginary", "UTC", "DeprecatedTzFormatWarning"]
class DeprecatedTzFormatWarning(Warning):
"""Warning raised when time zones are parsed from deprecated formats."""

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@@ -0,0 +1,419 @@
from six import PY2
from functools import wraps
from datetime import datetime, timedelta, tzinfo
ZERO = timedelta(0)
__all__ = ['tzname_in_python2', 'enfold']
def tzname_in_python2(namefunc):
"""Change unicode output into bytestrings in Python 2
tzname() API changed in Python 3. It used to return bytes, but was changed
to unicode strings
"""
if PY2:
@wraps(namefunc)
def adjust_encoding(*args, **kwargs):
name = namefunc(*args, **kwargs)
if name is not None:
name = name.encode()
return name
return adjust_encoding
else:
return namefunc
# The following is adapted from Alexander Belopolsky's tz library
# https://github.com/abalkin/tz
if hasattr(datetime, 'fold'):
# This is the pre-python 3.6 fold situation
def enfold(dt, fold=1):
"""
Provides a unified interface for assigning the ``fold`` attribute to
datetimes both before and after the implementation of PEP-495.
:param fold:
The value for the ``fold`` attribute in the returned datetime. This
should be either 0 or 1.
:return:
Returns an object for which ``getattr(dt, 'fold', 0)`` returns
``fold`` for all versions of Python. In versions prior to
Python 3.6, this is a ``_DatetimeWithFold`` object, which is a
subclass of :py:class:`datetime.datetime` with the ``fold``
attribute added, if ``fold`` is 1.
.. versionadded:: 2.6.0
"""
return dt.replace(fold=fold)
else:
class _DatetimeWithFold(datetime):
"""
This is a class designed to provide a PEP 495-compliant interface for
Python versions before 3.6. It is used only for dates in a fold, so
the ``fold`` attribute is fixed at ``1``.
.. versionadded:: 2.6.0
"""
__slots__ = ()
def replace(self, *args, **kwargs):
"""
Return a datetime with the same attributes, except for those
attributes given new values by whichever keyword arguments are
specified. Note that tzinfo=None can be specified to create a naive
datetime from an aware datetime with no conversion of date and time
data.
This is reimplemented in ``_DatetimeWithFold`` because pypy3 will
return a ``datetime.datetime`` even if ``fold`` is unchanged.
"""
argnames = (
'year', 'month', 'day', 'hour', 'minute', 'second',
'microsecond', 'tzinfo'
)
for arg, argname in zip(args, argnames):
if argname in kwargs:
raise TypeError('Duplicate argument: {}'.format(argname))
kwargs[argname] = arg
for argname in argnames:
if argname not in kwargs:
kwargs[argname] = getattr(self, argname)
dt_class = self.__class__ if kwargs.get('fold', 1) else datetime
return dt_class(**kwargs)
@property
def fold(self):
return 1
def enfold(dt, fold=1):
"""
Provides a unified interface for assigning the ``fold`` attribute to
datetimes both before and after the implementation of PEP-495.
:param fold:
The value for the ``fold`` attribute in the returned datetime. This
should be either 0 or 1.
:return:
Returns an object for which ``getattr(dt, 'fold', 0)`` returns
``fold`` for all versions of Python. In versions prior to
Python 3.6, this is a ``_DatetimeWithFold`` object, which is a
subclass of :py:class:`datetime.datetime` with the ``fold``
attribute added, if ``fold`` is 1.
.. versionadded:: 2.6.0
"""
if getattr(dt, 'fold', 0) == fold:
return dt
args = dt.timetuple()[:6]
args += (dt.microsecond, dt.tzinfo)
if fold:
return _DatetimeWithFold(*args)
else:
return datetime(*args)
def _validate_fromutc_inputs(f):
"""
The CPython version of ``fromutc`` checks that the input is a ``datetime``
object and that ``self`` is attached as its ``tzinfo``.
"""
@wraps(f)
def fromutc(self, dt):
if not isinstance(dt, datetime):
raise TypeError("fromutc() requires a datetime argument")
if dt.tzinfo is not self:
raise ValueError("dt.tzinfo is not self")
return f(self, dt)
return fromutc
class _tzinfo(tzinfo):
"""
Base class for all ``dateutil`` ``tzinfo`` objects.
"""
def is_ambiguous(self, dt):
"""
Whether or not the "wall time" of a given datetime is ambiguous in this
zone.
:param dt:
A :py:class:`datetime.datetime`, naive or time zone aware.
:return:
Returns ``True`` if ambiguous, ``False`` otherwise.
.. versionadded:: 2.6.0
"""
dt = dt.replace(tzinfo=self)
wall_0 = enfold(dt, fold=0)
wall_1 = enfold(dt, fold=1)
same_offset = wall_0.utcoffset() == wall_1.utcoffset()
same_dt = wall_0.replace(tzinfo=None) == wall_1.replace(tzinfo=None)
return same_dt and not same_offset
def _fold_status(self, dt_utc, dt_wall):
"""
Determine the fold status of a "wall" datetime, given a representation
of the same datetime as a (naive) UTC datetime. This is calculated based
on the assumption that ``dt.utcoffset() - dt.dst()`` is constant for all
datetimes, and that this offset is the actual number of hours separating
``dt_utc`` and ``dt_wall``.
:param dt_utc:
Representation of the datetime as UTC
:param dt_wall:
Representation of the datetime as "wall time". This parameter must
either have a `fold` attribute or have a fold-naive
:class:`datetime.tzinfo` attached, otherwise the calculation may
fail.
"""
if self.is_ambiguous(dt_wall):
delta_wall = dt_wall - dt_utc
_fold = int(delta_wall == (dt_utc.utcoffset() - dt_utc.dst()))
else:
_fold = 0
return _fold
def _fold(self, dt):
return getattr(dt, 'fold', 0)
def _fromutc(self, dt):
"""
Given a timezone-aware datetime in a given timezone, calculates a
timezone-aware datetime in a new timezone.
Since this is the one time that we *know* we have an unambiguous
datetime object, we take this opportunity to determine whether the
datetime is ambiguous and in a "fold" state (e.g. if it's the first
occurrence, chronologically, of the ambiguous datetime).
:param dt:
A timezone-aware :class:`datetime.datetime` object.
"""
# Re-implement the algorithm from Python's datetime.py
dtoff = dt.utcoffset()
if dtoff is None:
raise ValueError("fromutc() requires a non-None utcoffset() "
"result")
# The original datetime.py code assumes that `dst()` defaults to
# zero during ambiguous times. PEP 495 inverts this presumption, so
# for pre-PEP 495 versions of python, we need to tweak the algorithm.
dtdst = dt.dst()
if dtdst is None:
raise ValueError("fromutc() requires a non-None dst() result")
delta = dtoff - dtdst
dt += delta
# Set fold=1 so we can default to being in the fold for
# ambiguous dates.
dtdst = enfold(dt, fold=1).dst()
if dtdst is None:
raise ValueError("fromutc(): dt.dst gave inconsistent "
"results; cannot convert")
return dt + dtdst
@_validate_fromutc_inputs
def fromutc(self, dt):
"""
Given a timezone-aware datetime in a given timezone, calculates a
timezone-aware datetime in a new timezone.
Since this is the one time that we *know* we have an unambiguous
datetime object, we take this opportunity to determine whether the
datetime is ambiguous and in a "fold" state (e.g. if it's the first
occurrence, chronologically, of the ambiguous datetime).
:param dt:
A timezone-aware :class:`datetime.datetime` object.
"""
dt_wall = self._fromutc(dt)
# Calculate the fold status given the two datetimes.
_fold = self._fold_status(dt, dt_wall)
# Set the default fold value for ambiguous dates
return enfold(dt_wall, fold=_fold)
class tzrangebase(_tzinfo):
"""
This is an abstract base class for time zones represented by an annual
transition into and out of DST. Child classes should implement the following
methods:
* ``__init__(self, *args, **kwargs)``
* ``transitions(self, year)`` - this is expected to return a tuple of
datetimes representing the DST on and off transitions in standard
time.
A fully initialized ``tzrangebase`` subclass should also provide the
following attributes:
* ``hasdst``: Boolean whether or not the zone uses DST.
* ``_dst_offset`` / ``_std_offset``: :class:`datetime.timedelta` objects
representing the respective UTC offsets.
* ``_dst_abbr`` / ``_std_abbr``: Strings representing the timezone short
abbreviations in DST and STD, respectively.
* ``_hasdst``: Whether or not the zone has DST.
.. versionadded:: 2.6.0
"""
def __init__(self):
raise NotImplementedError('tzrangebase is an abstract base class')
def utcoffset(self, dt):
isdst = self._isdst(dt)
if isdst is None:
return None
elif isdst:
return self._dst_offset
else:
return self._std_offset
def dst(self, dt):
isdst = self._isdst(dt)
if isdst is None:
return None
elif isdst:
return self._dst_base_offset
else:
return ZERO
@tzname_in_python2
def tzname(self, dt):
if self._isdst(dt):
return self._dst_abbr
else:
return self._std_abbr
def fromutc(self, dt):
""" Given a datetime in UTC, return local time """
if not isinstance(dt, datetime):
raise TypeError("fromutc() requires a datetime argument")
if dt.tzinfo is not self:
raise ValueError("dt.tzinfo is not self")
# Get transitions - if there are none, fixed offset
transitions = self.transitions(dt.year)
if transitions is None:
return dt + self.utcoffset(dt)
# Get the transition times in UTC
dston, dstoff = transitions
dston -= self._std_offset
dstoff -= self._std_offset
utc_transitions = (dston, dstoff)
dt_utc = dt.replace(tzinfo=None)
isdst = self._naive_isdst(dt_utc, utc_transitions)
if isdst:
dt_wall = dt + self._dst_offset
else:
dt_wall = dt + self._std_offset
_fold = int(not isdst and self.is_ambiguous(dt_wall))
return enfold(dt_wall, fold=_fold)
def is_ambiguous(self, dt):
"""
Whether or not the "wall time" of a given datetime is ambiguous in this
zone.
:param dt:
A :py:class:`datetime.datetime`, naive or time zone aware.
:return:
Returns ``True`` if ambiguous, ``False`` otherwise.
.. versionadded:: 2.6.0
"""
if not self.hasdst:
return False
start, end = self.transitions(dt.year)
dt = dt.replace(tzinfo=None)
return (end <= dt < end + self._dst_base_offset)
def _isdst(self, dt):
if not self.hasdst:
return False
elif dt is None:
return None
transitions = self.transitions(dt.year)
if transitions is None:
return False
dt = dt.replace(tzinfo=None)
isdst = self._naive_isdst(dt, transitions)
# Handle ambiguous dates
if not isdst and self.is_ambiguous(dt):
return not self._fold(dt)
else:
return isdst
def _naive_isdst(self, dt, transitions):
dston, dstoff = transitions
dt = dt.replace(tzinfo=None)
if dston < dstoff:
isdst = dston <= dt < dstoff
else:
isdst = not dstoff <= dt < dston
return isdst
@property
def _dst_base_offset(self):
return self._dst_offset - self._std_offset
__hash__ = None
def __ne__(self, other):
return not (self == other)
def __repr__(self):
return "%s(...)" % self.__class__.__name__
__reduce__ = object.__reduce__

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from datetime import timedelta
import weakref
from collections import OrderedDict
from six.moves import _thread
class _TzSingleton(type):
def __init__(cls, *args, **kwargs):
cls.__instance = None
super(_TzSingleton, cls).__init__(*args, **kwargs)
def __call__(cls):
if cls.__instance is None:
cls.__instance = super(_TzSingleton, cls).__call__()
return cls.__instance
class _TzFactory(type):
def instance(cls, *args, **kwargs):
"""Alternate constructor that returns a fresh instance"""
return type.__call__(cls, *args, **kwargs)
class _TzOffsetFactory(_TzFactory):
def __init__(cls, *args, **kwargs):
cls.__instances = weakref.WeakValueDictionary()
cls.__strong_cache = OrderedDict()
cls.__strong_cache_size = 8
cls._cache_lock = _thread.allocate_lock()
def __call__(cls, name, offset):
if isinstance(offset, timedelta):
key = (name, offset.total_seconds())
else:
key = (name, offset)
instance = cls.__instances.get(key, None)
if instance is None:
instance = cls.__instances.setdefault(key,
cls.instance(name, offset))
# This lock may not be necessary in Python 3. See GH issue #901
with cls._cache_lock:
cls.__strong_cache[key] = cls.__strong_cache.pop(key, instance)
# Remove an item if the strong cache is overpopulated
if len(cls.__strong_cache) > cls.__strong_cache_size:
cls.__strong_cache.popitem(last=False)
return instance
class _TzStrFactory(_TzFactory):
def __init__(cls, *args, **kwargs):
cls.__instances = weakref.WeakValueDictionary()
cls.__strong_cache = OrderedDict()
cls.__strong_cache_size = 8
cls.__cache_lock = _thread.allocate_lock()
def __call__(cls, s, posix_offset=False):
key = (s, posix_offset)
instance = cls.__instances.get(key, None)
if instance is None:
instance = cls.__instances.setdefault(key,
cls.instance(s, posix_offset))
# This lock may not be necessary in Python 3. See GH issue #901
with cls.__cache_lock:
cls.__strong_cache[key] = cls.__strong_cache.pop(key, instance)
# Remove an item if the strong cache is overpopulated
if len(cls.__strong_cache) > cls.__strong_cache_size:
cls.__strong_cache.popitem(last=False)
return instance

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# -*- coding: utf-8 -*-
"""
This module provides an interface to the native time zone data on Windows,
including :py:class:`datetime.tzinfo` implementations.
Attempting to import this module on a non-Windows platform will raise an
:py:obj:`ImportError`.
"""
# This code was originally contributed by Jeffrey Harris.
import datetime
import struct
from six.moves import winreg
from six import text_type
try:
import ctypes
from ctypes import wintypes
except ValueError:
# ValueError is raised on non-Windows systems for some horrible reason.
raise ImportError("Running tzwin on non-Windows system")
from ._common import tzrangebase
__all__ = ["tzwin", "tzwinlocal", "tzres"]
ONEWEEK = datetime.timedelta(7)
TZKEYNAMENT = r"SOFTWARE\Microsoft\Windows NT\CurrentVersion\Time Zones"
TZKEYNAME9X = r"SOFTWARE\Microsoft\Windows\CurrentVersion\Time Zones"
TZLOCALKEYNAME = r"SYSTEM\CurrentControlSet\Control\TimeZoneInformation"
def _settzkeyname():
handle = winreg.ConnectRegistry(None, winreg.HKEY_LOCAL_MACHINE)
try:
winreg.OpenKey(handle, TZKEYNAMENT).Close()
TZKEYNAME = TZKEYNAMENT
except WindowsError:
TZKEYNAME = TZKEYNAME9X
handle.Close()
return TZKEYNAME
TZKEYNAME = _settzkeyname()
class tzres(object):
"""
Class for accessing ``tzres.dll``, which contains timezone name related
resources.
.. versionadded:: 2.5.0
"""
p_wchar = ctypes.POINTER(wintypes.WCHAR) # Pointer to a wide char
def __init__(self, tzres_loc='tzres.dll'):
# Load the user32 DLL so we can load strings from tzres
user32 = ctypes.WinDLL('user32')
# Specify the LoadStringW function
user32.LoadStringW.argtypes = (wintypes.HINSTANCE,
wintypes.UINT,
wintypes.LPWSTR,
ctypes.c_int)
self.LoadStringW = user32.LoadStringW
self._tzres = ctypes.WinDLL(tzres_loc)
self.tzres_loc = tzres_loc
def load_name(self, offset):
"""
Load a timezone name from a DLL offset (integer).
>>> from dateutil.tzwin import tzres
>>> tzr = tzres()
>>> print(tzr.load_name(112))
'Eastern Standard Time'
:param offset:
A positive integer value referring to a string from the tzres dll.
.. note::
Offsets found in the registry are generally of the form
``@tzres.dll,-114``. The offset in this case is 114, not -114.
"""
resource = self.p_wchar()
lpBuffer = ctypes.cast(ctypes.byref(resource), wintypes.LPWSTR)
nchar = self.LoadStringW(self._tzres._handle, offset, lpBuffer, 0)
return resource[:nchar]
def name_from_string(self, tzname_str):
"""
Parse strings as returned from the Windows registry into the time zone
name as defined in the registry.
>>> from dateutil.tzwin import tzres
>>> tzr = tzres()
>>> print(tzr.name_from_string('@tzres.dll,-251'))
'Dateline Daylight Time'
>>> print(tzr.name_from_string('Eastern Standard Time'))
'Eastern Standard Time'
:param tzname_str:
A timezone name string as returned from a Windows registry key.
:return:
Returns the localized timezone string from tzres.dll if the string
is of the form `@tzres.dll,-offset`, else returns the input string.
"""
if not tzname_str.startswith('@'):
return tzname_str
name_splt = tzname_str.split(',-')
try:
offset = int(name_splt[1])
except:
raise ValueError("Malformed timezone string.")
return self.load_name(offset)
class tzwinbase(tzrangebase):
"""tzinfo class based on win32's timezones available in the registry."""
def __init__(self):
raise NotImplementedError('tzwinbase is an abstract base class')
def __eq__(self, other):
# Compare on all relevant dimensions, including name.
if not isinstance(other, tzwinbase):
return NotImplemented
return (self._std_offset == other._std_offset and
self._dst_offset == other._dst_offset and
self._stddayofweek == other._stddayofweek and
self._dstdayofweek == other._dstdayofweek and
self._stdweeknumber == other._stdweeknumber and
self._dstweeknumber == other._dstweeknumber and
self._stdhour == other._stdhour and
self._dsthour == other._dsthour and
self._stdminute == other._stdminute and
self._dstminute == other._dstminute and
self._std_abbr == other._std_abbr and
self._dst_abbr == other._dst_abbr)
@staticmethod
def list():
"""Return a list of all time zones known to the system."""
with winreg.ConnectRegistry(None, winreg.HKEY_LOCAL_MACHINE) as handle:
with winreg.OpenKey(handle, TZKEYNAME) as tzkey:
result = [winreg.EnumKey(tzkey, i)
for i in range(winreg.QueryInfoKey(tzkey)[0])]
return result
def display(self):
"""
Return the display name of the time zone.
"""
return self._display
def transitions(self, year):
"""
For a given year, get the DST on and off transition times, expressed
always on the standard time side. For zones with no transitions, this
function returns ``None``.
:param year:
The year whose transitions you would like to query.
:return:
Returns a :class:`tuple` of :class:`datetime.datetime` objects,
``(dston, dstoff)`` for zones with an annual DST transition, or
``None`` for fixed offset zones.
"""
if not self.hasdst:
return None
dston = picknthweekday(year, self._dstmonth, self._dstdayofweek,
self._dsthour, self._dstminute,
self._dstweeknumber)
dstoff = picknthweekday(year, self._stdmonth, self._stddayofweek,
self._stdhour, self._stdminute,
self._stdweeknumber)
# Ambiguous dates default to the STD side
dstoff -= self._dst_base_offset
return dston, dstoff
def _get_hasdst(self):
return self._dstmonth != 0
@property
def _dst_base_offset(self):
return self._dst_base_offset_
class tzwin(tzwinbase):
"""
Time zone object created from the zone info in the Windows registry
These are similar to :py:class:`dateutil.tz.tzrange` objects in that
the time zone data is provided in the format of a single offset rule
for either 0 or 2 time zone transitions per year.
:param: name
The name of a Windows time zone key, e.g. "Eastern Standard Time".
The full list of keys can be retrieved with :func:`tzwin.list`.
"""
def __init__(self, name):
self._name = name
with winreg.ConnectRegistry(None, winreg.HKEY_LOCAL_MACHINE) as handle:
tzkeyname = text_type("{kn}\\{name}").format(kn=TZKEYNAME, name=name)
with winreg.OpenKey(handle, tzkeyname) as tzkey:
keydict = valuestodict(tzkey)
self._std_abbr = keydict["Std"]
self._dst_abbr = keydict["Dlt"]
self._display = keydict["Display"]
# See http://ww_winreg.jsiinc.com/SUBA/tip0300/rh0398.htm
tup = struct.unpack("=3l16h", keydict["TZI"])
stdoffset = -tup[0]-tup[1] # Bias + StandardBias * -1
dstoffset = stdoffset-tup[2] # + DaylightBias * -1
self._std_offset = datetime.timedelta(minutes=stdoffset)
self._dst_offset = datetime.timedelta(minutes=dstoffset)
# for the meaning see the win32 TIME_ZONE_INFORMATION structure docs
# http://msdn.microsoft.com/en-us/library/windows/desktop/ms725481(v=vs.85).aspx
(self._stdmonth,
self._stddayofweek, # Sunday = 0
self._stdweeknumber, # Last = 5
self._stdhour,
self._stdminute) = tup[4:9]
(self._dstmonth,
self._dstdayofweek, # Sunday = 0
self._dstweeknumber, # Last = 5
self._dsthour,
self._dstminute) = tup[12:17]
self._dst_base_offset_ = self._dst_offset - self._std_offset
self.hasdst = self._get_hasdst()
def __repr__(self):
return "tzwin(%s)" % repr(self._name)
def __reduce__(self):
return (self.__class__, (self._name,))
class tzwinlocal(tzwinbase):
"""
Class representing the local time zone information in the Windows registry
While :class:`dateutil.tz.tzlocal` makes system calls (via the :mod:`time`
module) to retrieve time zone information, ``tzwinlocal`` retrieves the
rules directly from the Windows registry and creates an object like
:class:`dateutil.tz.tzwin`.
Because Windows does not have an equivalent of :func:`time.tzset`, on
Windows, :class:`dateutil.tz.tzlocal` instances will always reflect the
time zone settings *at the time that the process was started*, meaning
changes to the machine's time zone settings during the run of a program
on Windows will **not** be reflected by :class:`dateutil.tz.tzlocal`.
Because ``tzwinlocal`` reads the registry directly, it is unaffected by
this issue.
"""
def __init__(self):
with winreg.ConnectRegistry(None, winreg.HKEY_LOCAL_MACHINE) as handle:
with winreg.OpenKey(handle, TZLOCALKEYNAME) as tzlocalkey:
keydict = valuestodict(tzlocalkey)
self._std_abbr = keydict["StandardName"]
self._dst_abbr = keydict["DaylightName"]
try:
tzkeyname = text_type('{kn}\\{sn}').format(kn=TZKEYNAME,
sn=self._std_abbr)
with winreg.OpenKey(handle, tzkeyname) as tzkey:
_keydict = valuestodict(tzkey)
self._display = _keydict["Display"]
except OSError:
self._display = None
stdoffset = -keydict["Bias"]-keydict["StandardBias"]
dstoffset = stdoffset-keydict["DaylightBias"]
self._std_offset = datetime.timedelta(minutes=stdoffset)
self._dst_offset = datetime.timedelta(minutes=dstoffset)
# For reasons unclear, in this particular key, the day of week has been
# moved to the END of the SYSTEMTIME structure.
tup = struct.unpack("=8h", keydict["StandardStart"])
(self._stdmonth,
self._stdweeknumber, # Last = 5
self._stdhour,
self._stdminute) = tup[1:5]
self._stddayofweek = tup[7]
tup = struct.unpack("=8h", keydict["DaylightStart"])
(self._dstmonth,
self._dstweeknumber, # Last = 5
self._dsthour,
self._dstminute) = tup[1:5]
self._dstdayofweek = tup[7]
self._dst_base_offset_ = self._dst_offset - self._std_offset
self.hasdst = self._get_hasdst()
def __repr__(self):
return "tzwinlocal()"
def __str__(self):
# str will return the standard name, not the daylight name.
return "tzwinlocal(%s)" % repr(self._std_abbr)
def __reduce__(self):
return (self.__class__, ())
def picknthweekday(year, month, dayofweek, hour, minute, whichweek):
""" dayofweek == 0 means Sunday, whichweek 5 means last instance """
first = datetime.datetime(year, month, 1, hour, minute)
# This will work if dayofweek is ISO weekday (1-7) or Microsoft-style (0-6),
# Because 7 % 7 = 0
weekdayone = first.replace(day=((dayofweek - first.isoweekday()) % 7) + 1)
wd = weekdayone + ((whichweek - 1) * ONEWEEK)
if (wd.month != month):
wd -= ONEWEEK
return wd
def valuestodict(key):
"""Convert a registry key's values to a dictionary."""
dout = {}
size = winreg.QueryInfoKey(key)[1]
tz_res = None
for i in range(size):
key_name, value, dtype = winreg.EnumValue(key, i)
if dtype == winreg.REG_DWORD or dtype == winreg.REG_DWORD_LITTLE_ENDIAN:
# If it's a DWORD (32-bit integer), it's stored as unsigned - convert
# that to a proper signed integer
if value & (1 << 31):
value = value - (1 << 32)
elif dtype == winreg.REG_SZ:
# If it's a reference to the tzres DLL, load the actual string
if value.startswith('@tzres'):
tz_res = tz_res or tzres()
value = tz_res.name_from_string(value)
value = value.rstrip('\x00') # Remove trailing nulls
dout[key_name] = value
return dout

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# tzwin has moved to dateutil.tz.win
from .tz.win import *

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# -*- coding: utf-8 -*-
"""
This module offers general convenience and utility functions for dealing with
datetimes.
.. versionadded:: 2.7.0
"""
from __future__ import unicode_literals
from datetime import datetime, time
def today(tzinfo=None):
"""
Returns a :py:class:`datetime` representing the current day at midnight
:param tzinfo:
The time zone to attach (also used to determine the current day).
:return:
A :py:class:`datetime.datetime` object representing the current day
at midnight.
"""
dt = datetime.now(tzinfo)
return datetime.combine(dt.date(), time(0, tzinfo=tzinfo))
def default_tzinfo(dt, tzinfo):
"""
Sets the ``tzinfo`` parameter on naive datetimes only
This is useful for example when you are provided a datetime that may have
either an implicit or explicit time zone, such as when parsing a time zone
string.
.. doctest::
>>> from dateutil.tz import tzoffset
>>> from dateutil.parser import parse
>>> from dateutil.utils import default_tzinfo
>>> dflt_tz = tzoffset("EST", -18000)
>>> print(default_tzinfo(parse('2014-01-01 12:30 UTC'), dflt_tz))
2014-01-01 12:30:00+00:00
>>> print(default_tzinfo(parse('2014-01-01 12:30'), dflt_tz))
2014-01-01 12:30:00-05:00
:param dt:
The datetime on which to replace the time zone
:param tzinfo:
The :py:class:`datetime.tzinfo` subclass instance to assign to
``dt`` if (and only if) it is naive.
:return:
Returns an aware :py:class:`datetime.datetime`.
"""
if dt.tzinfo is not None:
return dt
else:
return dt.replace(tzinfo=tzinfo)
def within_delta(dt1, dt2, delta):
"""
Useful for comparing two datetimes that may have a negligible difference
to be considered equal.
"""
delta = abs(delta)
difference = dt1 - dt2
return -delta <= difference <= delta

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# -*- coding: utf-8 -*-
import warnings
import json
from tarfile import TarFile
from pkgutil import get_data
from io import BytesIO
from dateutil.tz import tzfile as _tzfile
__all__ = ["get_zonefile_instance", "gettz", "gettz_db_metadata"]
ZONEFILENAME = "dateutil-zoneinfo.tar.gz"
METADATA_FN = 'METADATA'
class tzfile(_tzfile):
def __reduce__(self):
return (gettz, (self._filename,))
def getzoneinfofile_stream():
try:
return BytesIO(get_data(__name__, ZONEFILENAME))
except IOError as e: # TODO switch to FileNotFoundError?
warnings.warn("I/O error({0}): {1}".format(e.errno, e.strerror))
return None
class ZoneInfoFile(object):
def __init__(self, zonefile_stream=None):
if zonefile_stream is not None:
with TarFile.open(fileobj=zonefile_stream) as tf:
self.zones = {zf.name: tzfile(tf.extractfile(zf), filename=zf.name)
for zf in tf.getmembers()
if zf.isfile() and zf.name != METADATA_FN}
# deal with links: They'll point to their parent object. Less
# waste of memory
links = {zl.name: self.zones[zl.linkname]
for zl in tf.getmembers() if
zl.islnk() or zl.issym()}
self.zones.update(links)
try:
metadata_json = tf.extractfile(tf.getmember(METADATA_FN))
metadata_str = metadata_json.read().decode('UTF-8')
self.metadata = json.loads(metadata_str)
except KeyError:
# no metadata in tar file
self.metadata = None
else:
self.zones = {}
self.metadata = None
def get(self, name, default=None):
"""
Wrapper for :func:`ZoneInfoFile.zones.get`. This is a convenience method
for retrieving zones from the zone dictionary.
:param name:
The name of the zone to retrieve. (Generally IANA zone names)
:param default:
The value to return in the event of a missing key.
.. versionadded:: 2.6.0
"""
return self.zones.get(name, default)
# The current API has gettz as a module function, although in fact it taps into
# a stateful class. So as a workaround for now, without changing the API, we
# will create a new "global" class instance the first time a user requests a
# timezone. Ugly, but adheres to the api.
#
# TODO: Remove after deprecation period.
_CLASS_ZONE_INSTANCE = []
def get_zonefile_instance(new_instance=False):
"""
This is a convenience function which provides a :class:`ZoneInfoFile`
instance using the data provided by the ``dateutil`` package. By default, it
caches a single instance of the ZoneInfoFile object and returns that.
:param new_instance:
If ``True``, a new instance of :class:`ZoneInfoFile` is instantiated and
used as the cached instance for the next call. Otherwise, new instances
are created only as necessary.
:return:
Returns a :class:`ZoneInfoFile` object.
.. versionadded:: 2.6
"""
if new_instance:
zif = None
else:
zif = getattr(get_zonefile_instance, '_cached_instance', None)
if zif is None:
zif = ZoneInfoFile(getzoneinfofile_stream())
get_zonefile_instance._cached_instance = zif
return zif
def gettz(name):
"""
This retrieves a time zone from the local zoneinfo tarball that is packaged
with dateutil.
:param name:
An IANA-style time zone name, as found in the zoneinfo file.
:return:
Returns a :class:`dateutil.tz.tzfile` time zone object.
.. warning::
It is generally inadvisable to use this function, and it is only
provided for API compatibility with earlier versions. This is *not*
equivalent to ``dateutil.tz.gettz()``, which selects an appropriate
time zone based on the inputs, favoring system zoneinfo. This is ONLY
for accessing the dateutil-specific zoneinfo (which may be out of
date compared to the system zoneinfo).
.. deprecated:: 2.6
If you need to use a specific zoneinfofile over the system zoneinfo,
instantiate a :class:`dateutil.zoneinfo.ZoneInfoFile` object and call
:func:`dateutil.zoneinfo.ZoneInfoFile.get(name)` instead.
Use :func:`get_zonefile_instance` to retrieve an instance of the
dateutil-provided zoneinfo.
"""
warnings.warn("zoneinfo.gettz() will be removed in future versions, "
"to use the dateutil-provided zoneinfo files, instantiate a "
"ZoneInfoFile object and use ZoneInfoFile.zones.get() "
"instead. See the documentation for details.",
DeprecationWarning)
if len(_CLASS_ZONE_INSTANCE) == 0:
_CLASS_ZONE_INSTANCE.append(ZoneInfoFile(getzoneinfofile_stream()))
return _CLASS_ZONE_INSTANCE[0].zones.get(name)
def gettz_db_metadata():
""" Get the zonefile metadata
See `zonefile_metadata`_
:returns:
A dictionary with the database metadata
.. deprecated:: 2.6
See deprecation warning in :func:`zoneinfo.gettz`. To get metadata,
query the attribute ``zoneinfo.ZoneInfoFile.metadata``.
"""
warnings.warn("zoneinfo.gettz_db_metadata() will be removed in future "
"versions, to use the dateutil-provided zoneinfo files, "
"ZoneInfoFile object and query the 'metadata' attribute "
"instead. See the documentation for details.",
DeprecationWarning)
if len(_CLASS_ZONE_INSTANCE) == 0:
_CLASS_ZONE_INSTANCE.append(ZoneInfoFile(getzoneinfofile_stream()))
return _CLASS_ZONE_INSTANCE[0].metadata

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import logging
import os
import tempfile
import shutil
import json
from subprocess import check_call, check_output
from tarfile import TarFile
from dateutil.zoneinfo import METADATA_FN, ZONEFILENAME
def rebuild(filename, tag=None, format="gz", zonegroups=[], metadata=None):
"""Rebuild the internal timezone info in dateutil/zoneinfo/zoneinfo*tar*
filename is the timezone tarball from ``ftp.iana.org/tz``.
"""
tmpdir = tempfile.mkdtemp()
zonedir = os.path.join(tmpdir, "zoneinfo")
moduledir = os.path.dirname(__file__)
try:
with TarFile.open(filename) as tf:
for name in zonegroups:
tf.extract(name, tmpdir)
filepaths = [os.path.join(tmpdir, n) for n in zonegroups]
_run_zic(zonedir, filepaths)
# write metadata file
with open(os.path.join(zonedir, METADATA_FN), 'w') as f:
json.dump(metadata, f, indent=4, sort_keys=True)
target = os.path.join(moduledir, ZONEFILENAME)
with TarFile.open(target, "w:%s" % format) as tf:
for entry in os.listdir(zonedir):
entrypath = os.path.join(zonedir, entry)
tf.add(entrypath, entry)
finally:
shutil.rmtree(tmpdir)
def _run_zic(zonedir, filepaths):
"""Calls the ``zic`` compiler in a compatible way to get a "fat" binary.
Recent versions of ``zic`` default to ``-b slim``, while older versions
don't even have the ``-b`` option (but default to "fat" binaries). The
current version of dateutil does not support Version 2+ TZif files, which
causes problems when used in conjunction with "slim" binaries, so this
function is used to ensure that we always get a "fat" binary.
"""
try:
help_text = check_output(["zic", "--help"])
except OSError as e:
_print_on_nosuchfile(e)
raise
if b"-b " in help_text:
bloat_args = ["-b", "fat"]
else:
bloat_args = []
check_call(["zic"] + bloat_args + ["-d", zonedir] + filepaths)
def _print_on_nosuchfile(e):
"""Print helpful troubleshooting message
e is an exception raised by subprocess.check_call()
"""
if e.errno == 2:
logging.error(
"Could not find zic. Perhaps you need to install "
"libc-bin or some other package that provides it, "
"or it's not in your PATH?")