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croniter is a python module to provide iteration for datetime object.
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README.rst

Introduction

croniter provides iteration for datetime object with cron like format.

                      _ _
  ___ _ __ ___  _ __ (_) |_ ___ _ __
 / __| '__/ _ \| '_ \| | __/ _ \ '__|
| (__| | | (_) | | | | | ||  __/ |
 \___|_|  \___/|_| |_|_|\__\___|_|

Website: https://github.com/kiorky/croniter

Travis badge

https://travis-ci.org/kiorky/croniter.png

Usage

Simple example of usage is followings:

>>> from croniter import croniter
>>> from datetime import datetime
>>> base = datetime(2010, 1, 25, 4, 46)
>>> iter = croniter('*/5 * * * *', base)  # every 5 minites
>>> print iter.get_next(datetime)   # 2010-01-25 04:50:00
>>> print iter.get_next(datetime)   # 2010-01-25 04:55:00
>>> print iter.get_next(datetime)   # 2010-01-25 05:00:00
>>>
>>> iter = croniter('2 4 * * mon,fri', base)  # 04:02 on every Monday and Friday
>>> print iter.get_next(datetime)   # 2010-01-26 04:02:00
>>> print iter.get_next(datetime)   # 2010-01-30 04:02:00
>>> print iter.get_next(datetime)   # 2010-02-02 04:02:00

All you need to know is constructor and get_next, these signature are following:

>>> def __init__(self, cron_format, start_time=time.time())

croniter iterate along with 'cron_format' from 'start_time'. cron_format is 'min hour day month day_of_week', and please refer to http://en.wikipedia.org/wiki/Cron for details.:

>>> def get_next(self, ret_type=float)

get_next return next time in iteration with 'ret_type'. And ret_type accept only 'float' or 'datetime'.

Now, supported get_prev method. (>= 0.2.0):

>>> base = datetime(2010, 8, 25)
>>> itr = croniter('0 0 1 * *', base)
>>> print itr.get_prev(datetime)  # 2010-08-01 00:00:00
>>> print itr.get_prev(datetime)  # 2010-07-01 00:00:00
>>> print itr.get_prev(datetime)  # 2010-06-01 00:00:00

Develop this package

git clone https://github.com/kiorky/croniter.git
cd croniter
python bootstrap.py -d
bin/buildout -vvvvvvN
bin/test

Make a new release

We use zest.fullreleaser, a great releaser infrastructure.

Do and follow the instructions

bin/fullrelease

Contributors

Thank you to all who have contributed to this project! If you contributed and not listed below please let me know.

  • mrmachine
  • Hinnack
  • shazow
  • kiorky
  • jlsandell
  • mag009
  • djmitche
  • GreatCombinator
  • chris-baynes
  • ipartola
  • yuzawa-san
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