44 lines
1.0 KiB
Python
44 lines
1.0 KiB
Python
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try:
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import pytz
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except ModuleNotFoundError:
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pytz = None
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import zoneinfo
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def _get_tzinfo(tzenv: str):
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"""Get the tzinfo from `zoneinfo` or `pytz`
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:param tzenv: timezone in the form of Continent/City
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:return: tzinfo object or None if not found
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"""
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if pytz:
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try:
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return pytz.timezone(tzenv)
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except pytz.UnknownTimeZoneError:
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pass
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else:
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try:
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return zoneinfo.ZoneInfo(tzenv)
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except zoneinfo.ZoneInfoNotFoundError:
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pass
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return None
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def _get_tzinfo_or_raise(tzenv: str):
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tzinfo = _get_tzinfo(tzenv)
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if tzinfo is None:
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raise LookupError(
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f"Can not find timezone {tzenv}. \n"
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"Timezone names are generally in the form `Continent/City`."
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)
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return tzinfo
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def _get_tzinfo_from_file(tzfilename: str):
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with open(tzfilename, 'rb') as tzfile:
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if pytz:
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return pytz.tzfile.build_tzinfo('local', tzfile)
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else:
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return zoneinfo.ZoneInfo.from_file(tzfile)
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