[New-bugs-announce] [issue32497] datetime.strptime creates tz naive object from value containing a tzname

[Arjan Keeman]

New submission from Arjan Keeman <arjan.keeman at gmail.com>:

Consider the following:

tz_naive_object = datetime.strptime("2018-01-05 13:10:00 CET", "%Y-%m-%d %H:%M:%S %Z")

Python's standard library is not capable of converting the timezone name CET to a tzinfo object. Therefore the case made above returns a timezone naive datetime object.

I propose to add an extra optional argument to _strptime.py's _strptime_datetime function, and to datetime.strptime: tzname_to_tzinfo:Optional[Callable[[str],Optional[tzinfo]]]=None. This parameter can be set with a function that accepts the timezone name and returns a tzinfo object or None (like pytz.timezone). None will mean that a timezone naive object will be created.

Usage:
tz_aware_object = datetime.strptime("2018-01-05 13:10:00 CET", "%Y-%m-%d %H:%M:%S %Z", pytz.timezone)

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components: Library (Lib)
messages: 309502
nosy: akeeman
priority: normal
severity: normal
status: open
title: datetime.strptime creates tz naive object from value containing a tzname
type: enhancement
versions: Python 3.7

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Python tracker <report at bugs.python.org>
<https://bugs.python.org/issue32497>
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