datetime_trunc

This is a fork of datetime_truncate that fixes some critical bugs in the syntactic sugar versions of the truncate functions.

This module truncates a datetime object to the level of precision that you specify, making everything higher than that zero (or one for day and month).

It is based on PostgreSQL's DATE_TRUNC.

Documentation available on Read the Docs.

Installation:

pip install git+git://github.com/pb-/datetime_trunc.git

Usage:

>>> from datetime_trunc import truncate
>>> truncate(datetime(2012, 2, 4, 12, 24, 50, 234), 'second')
datetime(2012, 2, 4, 12, 24, 50)
>>> truncate(datetime(2012, 2, 4, 12, 24, 50), 'minute')
datetime(2012, 2, 4, 12, 24)
>>> truncate(datetime(2012, 2, 4, 12, 24), 'hour')
datetime(2012, 2, 4, 12)
>>> truncate(datetime(2012, 2, 4, 12, 24), 'day')
datetime(2012, 2, 4)
>>> truncate(datetime(2012, 2, 4, 12, 24), 'week')
datetime(2012, 1, 30)
>>> truncate(datetime(2012, 2, 4, 12, 24), 'month')
datetime(2012, 2, 1)
>>> truncate(datetime(2012, 2, 4, 12, 24), 'quarter')
datetime(2012, 1, 1)
>>> truncate(datetime(2012, 8, 18, 12, 25), 'half_year')
datetime(2012, 7, 1)
>>> truncate(datetime(2012, 8, 18, 12, 25), 'year')
datetime(2012, 1, 1)

There are also sugar functions available on the form:

truncate_second
truncate_minute
truncate_hour
truncate_day
truncate_week
truncate_month
truncate_quarter
truncate_half_year
truncate_year