blob: 159f9a5697c16847aaa99228cb6876093408fe91 (
plain)
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try:
import pytz
except ModuleNotFoundError:
pytz = None
import zoneinfo
def _get_tzinfo(tzenv: str):
"""Get the tzinfo from `zoneinfo` or `pytz`
:param tzenv: timezone in the form of Continent/City
:return: tzinfo object or None if not found
"""
if pytz:
try:
return pytz.timezone(tzenv)
except pytz.UnknownTimeZoneError:
pass
else:
try:
return zoneinfo.ZoneInfo(tzenv)
except zoneinfo.ZoneInfoNotFoundError:
pass
return None
def _get_tzinfo_or_raise(tzenv: str):
tzinfo = _get_tzinfo(tzenv)
if tzinfo is None:
raise LookupError(
f"Can not find timezone {tzenv}. \n"
"Timezone names are generally in the form `Continent/City`."
)
return tzinfo
def _get_tzinfo_from_file(tzfilename: str):
with open(tzfilename, 'rb') as tzfile:
if pytz:
return pytz.tzfile.build_tzinfo('local', tzfile)
else:
return zoneinfo.ZoneInfo.from_file(tzfile)
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