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CHANGELOG.md

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Change Log

3.2.0 - 2026-01-30

Added

  • Added support for Python 3.14 #923
  • Added upper limit to time-machine dependency #931

Changed

  • Dropped support for PyPy below PyPy3.11 #937
  • Optimize usage of re. methods #741
  • Fixed pendulum.parse not being marked as exported #693
  • Fixed pendulum.parse('now', tz='...') ignoring the timezone #701
  • Use pathlib to read Unix TZ data #742
  • Fixed Interval deepcopying #850
  • Fixed typo in end_of('century') docs #910
  • Bumped PyO3 to 0.27 #922
  • Fixed incorrect date offset calculation in Rust extensions #918
  • Changed locales and pytest to be lazy loaded #926
  • Fixed error of Duration deepcopy not including weeks #933
  • Fixed empty Durations not being an error in Python ISO8601 parser implementation #903
  • Fixed parsing invalid interval string #860
  • Fixed pluralization bug in Duration.in_words() #826

Locales

  • Added HI (Hindi) locale #902

Removed

  • Removed dependency on pytz #911

3.1.0 - 2025-04-19

Added

  • Added support for Python 3.13 #871

Changed

  • Removed support for Python 3.8 #863
  • Fixed pure Python wheels support #889
  • Fixed pendulum.tz.timezones() to use system tzdata #801
  • Fixed spelling of Kyiv #885
  • Fixed DeprecationWarning from utcfromtimestamp #887
  • Fixed parsing of invalid intervals #843

Locales

  • Added UA (Ukraine) locale #793
  • Added BG (Bulgarian) locale #812
  • Fixed KO (Korean) translations for before and after #858

3.0.0 - 2023-12-16

Changed

  • Relaxed dependency constraints. #760
  • The testing helpers are now optional and must be opted-in via the test extra. #778

Fixed

  • Removed remaining mentions of periods instead of intervals. #757
  • Fixed the behavior of the week_of_month property for edge cases in January and December. #774
  • Fixed the handling of the fold attribute when deep-copying a DateTime instance. #776
  • Fixed errors where hours and days were not handled properly when adding durations. #775
  • Fixed errors where hours and days were not handled properly when adding durations. #775

3.0.0b1 - 2023-10-01

Added

  • Made instance() support all native types (date, time, datetime). #732

Changed

  • Dropped support for Python 3.7. #734
  • Rewrote extensions in Rust. #721
  • Made day of week convention more consistent across the codebase. #731

Fixed

  • Fixed datetime string representation to match the native library. #733
  • Fixed issues on some system when retrieving the local timezone. #733
  • Fixed DST handling in start_of()/end_of() methods. #713

3.0.0a1 - 2022-11-23

Added

  • Added new testing helpers to time travel. #626

Changed

  • Dropped support for Python 2.7, 3.5 and 3.6. #569
  • The Timezone class now relies on the native zoneinfo.ZoneInfo class. #569
  • Renamed the Period class to Interval. #676
  • Renamed the period helper to interval. #676
  • Removed existing testing helpers: test() and set_test_now(). #626

Locales

  • Added the sk locale. #575
  • Added the ja locale. #610
  • Added the he locale. #585
  • Added the sv locale. #562

2.1.1 - 2020-07-13

Fixed

  • Fixed errors where invalid timezones were matched in from_format() (#374).
  • Fixed errors when subtracting negative timedeltas (#419).
  • Fixed errors in total units computation for durations with years and months (#482).
  • Fixed an error where the fold attribute was overridden when using replace() (#414).
  • Fixed an error where now() was not returning the correct result on DST transitions (#483).
  • Fixed inconsistent typing annotation for the parse() function (#452).

Locales

  • Added the pl locale (#459).

2.1.0 - 2020-03-07

Added

  • Added better typing and PEP-561 compliance (#320).
  • Added the is_anniversary() method as an alias of is_birthday() (#298).

Changed

  • Dropped support for Python 3.4.
  • is_utc() will now return True for any datetime with an offset of 0, similar to the behavior in the 1.* versions (#295)
  • Duration.in_words() will now return 0 milliseconds for empty durations.

Fixed

  • Fixed various issues with timezone transitions for some edge cases (#321, (#350)).
  • Fixed out of bound detection for nth_of("month") (#357).
  • Fixed an error where extra text was accepted in from_format() (#372).
  • Fixed a recursion error when adding time to a DateTime with a fixed timezone (#431).
  • Fixed errors where Period instances were not properly compared to other classes, especially timedelta instances (#427).
  • Fixed deprecation warnings due to internal regexps (#427).
  • Fixed an error where the test() helper would not unset the test instance when an exception was raised (#445).
  • Fixed an error where the week_of_month attribute was not returning the correct value (#446).
  • Fixed an error in the way the Z ISO-8601 UTC designator was not parsed as UTC (#448).

Locales

  • Added the nl locale.
  • Added the it locale.
  • Added the id locale.
  • Added the nb locale.
  • Added the nn locale.

2.0.5 - 2019-07-03

Fixed

  • Fixed ISO week dates not being parsed properly in from_format().
  • Fixed loading of some timezones with empty posix spec.
  • Fixed deprecation warnings.

Locales

  • Added RU locale.

2.0.4 - 2018-10-30

Fixed

  • Fixed from_format() not recognizing input strings when the specified pattern had escaped elements.
  • Fixed missing x token for string formatting.
  • Fixed reading timezone files.
  • Added support for parsing padded 2-digit days of the month with from_format()
  • Fixed from_format() trying to parse escaped tokens.
  • Fixed the z token timezone parsing in from_format() to allow underscores.
  • Fixed C extensions build errors.
  • Fixed age calculation for future dates.

2.0.3 - 2018-07-30

Fixed

  • Fixed handling of pytz timezones.
  • Fixed some formatter's tokens handling.
  • Fixed errors on some systems when retrieving timezone from localtime files.
  • Fixed diff methods.
  • Fixed closest()/farthest() methods.

2.0.2 - 2018-05-29

Fixed

  • Fixed the weeks property for negative Period instances.
  • Fixed start_of() methods not setting microseconds to 0.
  • Fixed errors on some systems when retrieving timezone from clock files.
  • Fixed parsing of partial time.
  • Fixed parsing not raising an error for week 53 for ordinary years.
  • Fixed string formatting not supporting strftime format.

2.0.1 - 2018-05-10

Fixed

  • Fixed behavior of the YY token in from_format().
  • Fixed errors on some systems when retrieving timezone from clock files.

2.0.0 - 2018-05-08

Added

  • Added years and months support to durations.
  • Added the test_local_timezone() and set_local_timezone() helpers to ease testing.
  • Added support of ISO 8601 duration parsing.
  • Added support of ISO 8601 interval parsing.
  • Added a local() helper.
  • Added a naive() helper and a naive() method.
  • Added support for POSIX specification to extend timezones DST transitions.

Changed

  • Pendulum class has been renamed to DateTime.
  • Interval class has been renamed to Duration.
  • Changed and improved the timezone system.
  • Removed the create() helper.
  • Removed the utcnow() helper.
  • strict keyword argument for parse has been renamed to exact.
  • at() now supports setting partial time.
  • local, utc and is_dst are now methods rather than properties (is_local(), is_utc(), is_dst()).
  • Changed the repr of most common objects.
  • Made the strict keyword argument for parse false by default, which means it will not fallback on the dateutil parser.
  • Improved performances of the precise_diff() helper.
  • The alternative formatter is now the default one.
  • set_to_string_format()/reset_to_string_format() methods have been removed.
  • from_format() now uses the alternative formatter tokens.
  • Removed xrange() method of the Period class and made range() a generator.
  • New locale system which uses CLDR data for most of the translations.
  • diff_for_humans() now returns a few seconds where appropriate.
  • Removed Period.intersect().