Documentation: crsmithdev.com/arrow.

Arrow is a Python library that provides a sensible, intelligent way of creating, manipulating, formatting and converting dates and times. Arrow is simple, lightweight and heavily inspired by moment.js and requests.

Python's standard library and some other low-level modules offer complete functionality but don't work very well from a usability perspective:

• Too many modules: datetime, time, calendar, dateutil, pytz
• Time zones and timestamp conversions are verbose and error-prone
• Time zones are explicit, naivete is the norm
• Gaps in functionality: ISO-8601 parsing, timespans, humanization

• Implements the datetime interface
• TZ-aware & UTC by default
• Concise, intelligent interface for creation
• Easily replace and shift attributes
• Rich parsing & formatting options
• Timezone conversion
• Simple timestamp handling
• Time spans, ranges, floors and ceilings
• Humanization, with support for a growing number of locales

$ pip install arrow

>>> 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]>

>>> local.timestamp
1368303838

>>> 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'

Documentation is available at crsmithdev.com/arrow.

• 0.3.2
  • Python 3.0 support / fixes
• 0.3.1
  • Fix for incorrect timestamp handling in old arrow function (for old API compatibility)
• 0.3.0
  • Arrow objects are no longer mutable
  • Arrow.replace method
  • Plural attribute name semantics altered: single -> absolute, plural -> relative
  • Plural names no longer supported as properties (e.g. arrow.utcnow().years)
  • Limit parameters are respected in range and span_range
  • Accept timestamps, datetimes and Arrows for datetime inputs, where reasonable
• 0.2.1
  • Support for localized humanization
  • English, Russian, Greek, Korean, Chinese locales
• 0.2.0
  • Reimplemented as datetime replacement
  • Added date parsing
  • Added date formatting
  • Added floor, ceil and span methods
  • Added datetime methods for drop-in replacement
  • Added clone method
  • Added get, now and utcnow API methods
• 0.1.6
  • Added humanized time deltas
  • Fixed numerous issues with conversions related to daylight savings time
  • Fixed some inconsistencies in time zone names
  • __str__ uses ISO formatting
  • __eq__ implemented for basic comparison between Arrow objects
• 0.1.5
  • Started tracking changes
  • Added parsing of ISO-formatted time zone offsets (e.g. '+02:30', '-05:00')
  • Fixed some incorrect timestamps with delta / olson time zones
  • Fixed formatting of UTC offsets in TimeStamp's str method