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dateutil v2.8.1 Release Notes

• 🔖 Version 2.8.1 (2019年11月03日)

  ⚡️ 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

Previous changes from v2.7.5

• ⚡️ Data updates

  • ⚡️ Update tzdata to 2018g

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