zulu
|version| |build| |coveralls| |license|
A drop-in replacement for native datetimes that embraces UTC
Install using pip:
::
pip3 install zulu
.. code-block:: python
import zulu
zulu.now()
# <Zulu [2016-07-25T19:33:18.137493+00:00]>
dt = zulu.parse('2016-07-25T19:33:18.137493+00:00')
# <Zulu [2016-07-25T19:33:18.137493+00:00]>
dt = zulu.create(2016, 7, 25, 19, 33, 18, 137493)
# <Zulu [2016-07-25T19:33:18.137493+00:00]>
dt.isoformat()
# '2016-07-25T19:33:18.137493+00:00'
dt.timestamp()
# 1469475198.137493
dt.naive
# datetime.datetime(2016, 7, 25, 19, 33, 18, 137493)
dt.datetime
# datetime.datetime(2016, 7, 25, 19, 33, 18, 137493, tzinfo=<UTC>)
dt.format('%Y-%m-%d')
# 2016-07-25
dt.format('YYYY-MM-dd')
# 2016-07-25
dt.format("E, MMM d, ''YY")
# "Mon, Jul 25, '16"
dt.format("E, MMM d, ''YY", locale='de')
# "Mo., Juli 25, '16"
dt.format("E, MMM d, ''YY", locale='fr')
# "lun., juil. 25, '16"
dt.shift(hours=-5, minutes=10)
# <Zulu [2016-07-25T14:43:18.137493+00:00]>
dt.replace(hour=14, minute=43)
# <Zulu [2016-07-25T14:43:18.137493+00:00]>
dt.start_of('day')
# <Zulu [2016-07-25T00:00:00+00:00]>
dt.end_of('day')
# <Zulu [2016-07-25T23:59:59.999999+00:00]>
dt.span('hour')
# (<Zulu [2016-07-25T19:00:00+00:00]>, <Zulu [2016-07-25T19:59:59.999999+00:00]>)
dt.time_from(dt.end_of('day'))
# '4 hours ago'
dt.time_to(dt.end_of('day'))
# 'in 4 hours'
list(zulu.range('hour', dt, dt.shift(hours=4)))
# [Zulu [2016-07-25T19:33:18.137493+00:00]>,
# Zulu [2016-07-25T20:33:18.137493+00:00]>,
# Zulu [2016-07-25T21:33:18.137493+00:00]>,
# Zulu [2016-07-25T22:33:18.137493+00:00]>]
list(zulu.span_range('minute', dt, dt.shift(minutes=4)))
# [(Zulu [2016-07-25T19:33:00+00:00]>, Zulu [2016-07-25T19:33:59.999999+00:00]>),
# (Zulu [2016-07-25T19:34:00+00:00]>, Zulu [2016-07-25T19:34:59.999999+00:00]>),
# (Zulu [2016-07-25T19:35:00+00:00]>, Zulu [2016-07-25T19:35:59.999999+00:00]>),
# (Zulu [2016-07-25T19:36:00+00:00]>, Zulu [2016-07-25T19:36:59.999999+00:00]>)]
zulu.parse_delta('1w 3d 2h 32m')
# <Delta [10 days, 2:32:00]>
zulu.parse_delta('2:04:13:02.266')
# <Delta [2 days, 4:13:02.266000]>
zulu.parse_delta('2 days, 5 hours, 34 minutes, 56 seconds')
# <Delta [2 days, 5:34:56]>
Why zulu instead of native datetimes <https://docs.python.org/3.5/library/datetime.html#datetime-objects>_:
parse(), format(), shift(), and python-dateutil_ timezone support.Zulu objects since they are only ever UTC datetimes.Unicode date patterns_ as well as strptime/strftime directives.Why zulu instead of Arrow_:
datetime.datetime). No need to convert using arrow.datetime when you need a datetime (zulu is always a datetime).arrow.get('02/08/1987', 'MM/DD/YY') to fail (input does not match format) but it gladly returns <Arrow [2019-02-08T00:00:00+00:00) whereas zulu.parse('02/08/1987', '%m/%d/%y') throws zulu.parser.ParseError: Value "02/08/1987" does not match any format in ['%m/%d/%y'].strptime/strftime as well as Unicode date patterns_ for string parsing/formatting.Special thanks goes out to the authors/contributors of the following libraries that have made it possible for zulu to exist:
Babel_iso8601_python-dateutil_pytimeparse_pytz_For the full documentation, please visit https://zulu.readthedocs.io.
.. _Unicode date patterns: http://www.unicode.org/reports/tr35/tr35-19.html#Date_Field_Symbol_Table .. _Arrow: https://arrow.readthedocs.io .. _Babel: https://github.com/python-babel/babel .. _iso8601: https://bitbucket.org/micktwomey/pyiso8601 .. _python-dateutil: https://github.com/dateutil/dateutil .. _pytimeparse: https://github.com/wroberts/pytimeparse .. _pytz: http://pythonhosted.org/pytz
.. |version| image:: https://img.shields.io/pypi/v/zulu.svg?style=flat-square :target: https://pypi.python.org/pypi/zulu/
.. |build| image:: https://img.shields.io/github/actions/workflow/status/dgilland/zulu/main.yml?branch=master&style=flat-square :target: https://github.com/dgilland/zulu/actions
.. |coveralls| image:: https://img.shields.io/coveralls/dgilland/zulu/master.svg?style=flat-square :target: https://coveralls.io/r/dgilland/zulu
.. |license| image:: https://img.shields.io/pypi/l/zulu.svg?style=flat-square :target: https://pypi.python.org/pypi/zulu/
datetime.utcnow and datetime.utcfromtimestamp.Zulu.time_from, Zulu.time_to, Zulu.time_from_now, and Zulu.time_to_now where keyword arguments weren't passed to underlying Delta.format call.Zulu.format where "YY" and "YYYY" format patterns would return the year in "Week of Year" based calendars instead of the regular calendar year.'week' option to Zulu.start_of, Zulu.end_of, Zulu.span, and Zulu.span_range. Thanks ThomasChiroux_!Zulu.astimezone in Python 3.8 due to change in return type from super().asdatetime. In Python<=3.7, super().asdatetime returned as instance of datetime, but in Python 3.8 another instance of Zulu was returned instead. Zulu.astimezone will now return a datetime instance in Python 3.8.zulu.Timer.__init__().fold attribute support to Zulu.zulu.to_seconds for converting units of time to total number of seconds.zulu.Timer class that can be used to track elapsed time (like a stopwatch) or as a countdown timer.Zulu.datetimetuple().Zulu.datetuple().Zulu.__iter__ method. (breaking change)Delta.__iter__ method. (breaking change)Add Python 3.6 support.
Add Delta.__iter__ method that yields 2-element tuples like Zulu.__iter__. Delta values are normalized into integer values distributed from the higher units to the lower units.
Add Delta.__float__ and Delta.__int__ methods for converting to seconds.
Add Zulu.__float__ and Zulu.__int__ methods for converting to epoch seconds.
Fix issue in Python 3.6 where zulu.now() returned a naive datetime Zulu instance.
Make Zulu.__iter__ yield 2-element tuples containing (unit, value) like (('year', 2000), ('month', 12), ...) so it can be converted to a dict with proper keys easier. (breaking change)
Remove previously deprecated zulu.delta() function. Use zulu.parse_delta() instead. (breaking change)
Rename modules: (breaking change)
zulu.datetime -> zulu.zuluzulu.timedelta -> zulu.deltalocale in Delta.format() when a locale is not known via environment variables.zulu.parse_delta as alias for Delta.parse.zulu.delta in favor of zulu.parse_delta.Zulu(), Zulu.parse(), and zulu.parse() to be a dict containing keys corresponding to initialization parameters.python-dateutil>=2.6.0. (breaking change)pytz timezone handling for strings with dateutil.tz.gettz. Continue to support pytz timezones during Zulu() object creation. (breaking change).dateutil.tz.tzutc(). Was previously pytz.UTC. (breaking change)dateutil.tz.tzlocal(). Was previously set by the tzlocal library. (breaking change)Add comparison methods to Zulu:
is_beforeis_on_or_beforeis_afteris_on_or_afteris_betweenZulu() constructor by eliminating multiple unnecessary calls to datetime constructor.Zulu not being pickle-able.Add missing magic method overrides for Delta for +delta, -delta, and abs(delta) so that Delta is returned instead of datetime.timedelta.
__pos____neg____abs__Make Zulu.__sub__ and Zulu.subtract return a Delta object instead of datetime.timedelta.
Make zulu.delta and Zulu.Delta.parse accept a number.
Allow the first argument to Zulu.shift be a timedelta or relative delta object.
Ensure that mathematical magic methods for Delta return Delta objects and not datetime.timedelta.
__add____radd____sub____mul____rmul____floordiv____truediv__ (Python 3 only)__div__ (Python 2 only)__mod__ (Python 3 only)__divmod__ (Python 3 only)format_datetime. breaking changeX and XX. breaking changeX to timestamp. breaking changezulu.create as factory function to create a zulu.Zulu instance.Zulu.format when using Unicode date pattern format tokens.Delta.format.Delta.format. Locale is currently not supported in Zulu.format so decided to disable it in Delta.format until both can have it. breaking changezulu.DateTime to zulu.Zulu. breaking changeZulu.isleap to Zulu.is_leap_year. breaking changezulu.format alias (function can be accessed at zulu.parser.format_datetime). breaking changeZulu.leapdays. breaking changeZulu.days_in_month.zulu.Delta class that inherits from datetime.timedelta.zulu.delta as alias to zulu.Delta.parse.Zulu.time_from, Zulu.time_to, Zulu.time_from_now, and Zulu.time_to_now that return "time ago" or "time to" humanized strings.zulu.range as alias to Zulu.range.zulu.span_range as alias to Zulu.span_range.Zulu.add/subtract, but allow positional argument to be an addable/subtractable object (datetime, timedelta, dateutil.relativedelta). breaking changeDateTime.sub to DateTime.subtract. breaking changeDateTime.add to be a datetime.timedelta or dateutil.relativedelta object.DateTime.subtract to be a DateTime, datetime.datetime, datetime.timedelta, or dateutil.relativedelta object.zulu.ISO8601 and zulu.TIMESTAMP as parse/format constants that can be used in zulu.parse(string, zulu.ISO8601) and DateTime.format(zulu.ISO8601).'timestamp' in favor of using just 'X' as defined in zulu.TIMESTAMP. breaking changezulu.parser.format to zulu.format.DateTime addition operation that resulted in a native datetime being returned instead of DateTime.Add DateTime.datetime property that returns a native datetime.
Add DateTime.fromgmtime that creates a DateTime from a UTC based time.struct_time.
Add DateTime.fromlocaltime that creates a DateTime from a local time.struct_time.
Add DateTime.isleap method that returns whether its year is a leap year.
Add DateTime.leapdays that calculates the number of leap days between its year and another year.
Add DateTime.start_of/end_of and other variants that return the start of end of a time frame:
start/end_of_centurystart/end_of_decadestart/end_of_yearstart/end_of_monthstart/end_of_daystart/end_of_hourstart/end_of_minutestart/end_of_secondAdd DateTime.span that returns the start and end of a time frame.
Add DateTime.span_range that returns a range of spans.
Add DateTime.range that returns a range of datetimes.
Add DateTime.add and DateTime.sub methods.
Add years and months arguments to DateTime.shift/add/sub.
Drop support for milliseconds from DateTime.shift/add/sub. breaking change
Make DateTime.parse/format understand a subset of Unicode date patterns <http://www.unicode.org/reports/tr35/tr35-19.html#Date_Field_Symbol_Table>_.
Set defaults for year (1970), month (1), and day (1) arguments to new DateTime objects. Creating a new DateTime now defaults to the start of the POSIX epoch.
>= instead.DateTime.naive that resulted in a DateTime object being returned instead of a native datetime... _ThomasChiroux: https://github.com/ThomasChiroux
MIT License
Copyright (c) 2020 Derrick Gilland
Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
FAQs
A drop-in replacement for native datetimes that embraces UTC
We found that zulu demonstrated a healthy version release cadence and project activity because the last version was released less than a year ago. It has 1 open source maintainer collaborating on the project.
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