datetime_truncate

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.

Installation:

You can install from pypi!

pip install datetime_truncate

Usage:

>>> from datetime_truncate 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, 50), '5_minute')
datetime(2012, 2, 4, 12, 20)
>>> truncate(datetime(2012, 2, 4, 12, 24, 50), '19_minute')
datetime(2012, 2, 4, 12, 19)
>>> 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_nth_minute
• truncate_hour
• truncate_day
• truncate_week
• truncate_month
• truncate_quarter
• truncate_half_year
• truncate_year

Changes

1.1.0 - 2017-10-19

• Added truncate to nth minute of the hour, so if you want to truncate to every third minute you do: truncate(dt, '3_minute') or with some more sugar on top; truncate_nth_minute(dt, 3)
• Fixed bugs with truncate quarter and half_year, thanks @thegrymek!