def from_ical(ical, timezone=None):
tzinfo = None
if timezone:
try:
tzinfo = pytz.timezone(timezone)
except pytz.UnknownTimeZoneError:
if timezone in WINDOWS_TO_OLSON:
tzinfo = pytz.timezone(WINDOWS_TO_OLSON.get(timezone))
else:
tzinfo = _timezone_cache.get(timezone, None)
try:
timetuple = (
int(ical[:4]), # year
int(ical[4:6]), # month
int(ical[6:8]), # day
int(ical[9:11]), # hour
int(ical[11:13]), # minute
int(ical[13:15]), # second
)
if tzinfo:
return tzinfo.localize(datetime(*timetuple))
elif not ical[15:]:
return datetime(*timetuple)
elif ical[15:16] == 'Z':
return pytz.utc.localize(datetime(*timetuple))
else:
raise ValueError(ical)
except:
raise ValueError('Wrong datetime format: %s' % ical)
def test_all(self):
"""test if all mappings actually map to valid pytz tzids"""
for olson in WINDOWS_TO_OLSON.values():
pytz.timezone(olson)
def test_all(self):
"""test if all mappings actually map to valid pytz tzids"""
for olson in WINDOWS_TO_OLSON.values():
pytz.timezone(olson)