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Bug description:
https://docs.python.org/3/library/datetime.html#strftime-and-strptime-format-codes documents "strftime() and strptime() Format Codes". It mentions the new %:z variant of %z, introduced in Python 3.12
>>> datetime.datetime.strptime("2023-07-17T13:58:49-07:00", "%Y-%m-%dT%H:%M:%S%z")
datetime.datetime(2023, 7, 17, 13, 58, 49, tzinfo=datetime.timezone(datetime.timedelta(days=-1, seconds=61200)))
>>> datetime.datetime.strptime("2023-07-17T13:58:49-07:00", "%Y-%m-%dT%H:%M:%S%:z")
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
File "/usr/lib/python3.12/_strptime.py", line 554, in _strptime_datetime
tt, fraction, gmtoff_fraction = _strptime(data_string, format)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/usr/lib/python3.12/_strptime.py", line 325, in _strptime
raise ValueError("'%s' is a bad directive in format '%s'" %
ValueError: ':' is a bad directive in format '%Y-%m-%dT%H:%M:%S%:z'But passing "%:z" to strptime raises an error. This is a bug because strptime and strftime should have the same format codes, according to the docs.
Since %z already parses this format when passed to strptime, I think %:z should just do the same thing.
Workaround: Change %:z to %z in your format string for strptime.
CPython versions tested on:
3.12
Operating systems tested on:
Linux
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