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from datetime import timedelta
from dateutil import tz
UTC = tz.UTC
def get_timezone(key):
if not key:
raise KeyError("Unknown time zone: %s" % key)
try:
rv = tz.gettz(key)
except Exception:
rv = None
if rv is None or not isinstance(rv, (tz.tzutc, tz.tzfile)):
raise KeyError("Unknown time zone: %s" % key)
return rv
def get_timezone_file(f, key=None):
return tz.tzfile(f)
def get_fixed_offset_zone(offset):
return tz.tzoffset(None, timedelta(minutes=offset))
def is_ambiguous(dt):
return tz.datetime_ambiguous(dt)
def is_imaginary(dt):
return not tz.datetime_exists(dt)
enfold = tz.enfold
def get_fold(dt):
return getattr(dt, "fold", 0)
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