Arrow - Better dates & times for Python

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Documentation: `arrow.readthedocs.org <http://arrow.readthedocs.org/en/latest/>`_

What?

Arrow is a Python library that offers a sensible, human-friendly approach to creating, manipulating, formatting and converting dates, times, and timestamps. It implements and updates the datetime type, plugging gaps in functionality, and provides an intelligent module API that supports many common creation scenarios. Simply put, it helps you work with dates and times with fewer imports and a lot less code.

Arrow is heavily inspired by moment.js <https://github.com/timrwood/moment>_ and requests <https://github.com/kennethreitz/requests>_

Why?

Python's standard library and some other low-level modules have near-complete date, time and time zone functionality but don't work very well from a usability perspective:

Too many modules: datetime, time, calendar, dateutil, pytz and more
Too many types: date, time, datetime, tzinfo, timedelta, relativedelta, etc.
Time zones and timestamp conversions are verbose and unpleasant
Time zone naievety is the norm
Gaps in functionality: ISO-8601 parsing, timespans, humanization

Features

Fully implemented, drop-in replacement for datetime
Supports Python 2.6, 2.7, 3.3, 3.4 and 3.5
Time zone-aware & UTC by default
Provides super-simple creation options for many common input scenarios
Updated .replace method with support for relative offsets, including weeks
Formats and parses strings automatically
Partial support for ISO-8601
Timezone conversion
Timestamp available as a property
Generates time spans, ranges, floors and ceilings in timeframes from year to microsecond
Humanizes and supports a growing list of contributed locales
Extensible for your own Arrow-derived types

Quick start

First:

.. code-block:: console

$ pip install arrow

And then:

.. code-block:: pycon

>>> import arrow
>>> utc = arrow.utcnow()
>>> utc
<Arrow [2013-05-11T21:23:58.970460+00:00]>

>>> utc = utc.replace(hours=-1)
>>> utc
<Arrow [2013-05-11T20:23:58.970460+00:00]>

>>> local = utc.to('US/Pacific')
>>> local
<Arrow [2013-05-11T13:23:58.970460-07:00]>

>>> arrow.get('2013-05-11T21:23:58.970460+00:00')
<Arrow [2013-05-11T21:23:58.970460+00:00]>

>>> local.timestamp
1368303838

>>> local.format()
'2013-05-11 13:23:58 -07:00'

>>> local.format('YYYY-MM-DD HH:mm:ss ZZ')
'2013-05-11 13:23:58 -07:00'

>>> local.humanize()
'an hour ago'

>>> local.humanize(locale='ko_kr')
'1시간 전'

Further documentation can be found at arrow.readthedocs.org <http://arrow.readthedocs.org/en/latest/>_

Contributing

Contributions are welcome, especially with localization. See locales.py <https://github.com/crsmithdev/arrow/blob/master/arrow/locales.py>_ for what's currently supported.