Alexander Belopolsky <alexander.belopol...@gmail.com> added the comment:
> replacing all elements of a datetime below a certain level is a very common
> idiom
This can be accomplished rather efficiently by truncating a time tuple:
>>> t = datetime.now()
>>> datetime(*t.timetuple()[:6])
datetime.datetime(2018, 1, 9, 14, 47, 12)
>>> datetime(*t.timetuple()[:5])
datetime.datetime(2018, 1, 9, 14, 47)
>>> datetime(*t.timetuple()[:4])
datetime.datetime(2018, 1, 9, 14, 0)
>>> datetime(*t.timetuple()[:3])
datetime.datetime(2018, 1, 9, 0, 0)
if you do this often, you can wrap this in a function
_PARTS = {'seconds': 6, 'minutes': 5, ...}
def truncate_to(t, timespec):
return datetime(*t.timetuple()[:_PARTS[timespec])
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Python tracker <rep...@bugs.python.org>
<https://bugs.python.org/issue32522>
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