def _strptime_datetime(cls, data_string, format="%a %b %d %H:%M:%S %Y"):
"""Return a class cls instance based on the input string and the
format string."""
tt, fraction = _strptime(data_string, format)
tzname, gmtoff = tt[-2:]
args = tt[:6] + (fraction,)
if gmtoff is not None:
tzdelta = datetime_timedelta(seconds=gmtoff)
if tzname:
tz = datetime_timezone(tzdelta, tzname)
else:
tz = datetime_timezone(tzdelta)
args += (tz,)
return cls(*args)
def _strptime_datetime(cls, data_string, format="%a %b %d %H:%M:%S %Y"):
"""Return a class cls instance based on the input string and the
format string."""
tt, fraction = _strptime(data_string, format)
tzname, gmtoff = tt[-2:]
args = tt[:6] + (fraction, )
if gmtoff is not None:
tzdelta = datetime_timedelta(seconds=gmtoff)
if tzname:
tz = datetime_timezone(tzdelta, tzname)
else:
tz = datetime_timezone(tzdelta)
args += (tz, )
return cls(*args)
def parse_timezone(timezone_str):
''' Parse the timezone as an offset from UTC.
Try the pytz module first.
Returns tzinfo or None.
'''
#log.debug(f'timezone_str: {timezone_str}')
tzinfo = None
if PYTZ_AVAILABLE:
try:
tzinfo = pytz.timezone(timezone_str)
except UnknownTimeZoneError:
#log.debug(f'timezone unknown to pytz: {timezone_str}')
pass
if not tzinfo:
match = TIMEZONE_RE.search(timezone_str)
if match:
mdict = match.groupdict()
#log.debug(f'timezone dict: {mdict}')
# name must be UTC; if it's not and pytz wasn't able to
# handle the conversion, then we'll ignore the timezone
if 'name' in mdict:
if mdict['name']:
timezone_is_utc = mdict['name'].upper() == 'UTC'
else:
timezone_is_utc = True
else:
timezone_is_utc = True
if timezone_is_utc:
# timedelta() requires hour/minute
if ('sign' in mdict) and ('hour' in mdict) and ('minute' in mdict):
tz_sign = mdict['sign']
tz_hours = int(mdict['hour'])
tz_minutes = int(mdict['minute'])
offset = timedelta(hours=tz_hours, minutes=tz_minutes)
if tz_sign == '-':
offset = -offset
tzinfo = datetime_timezone(offset)
else:
log.debug(f'no timezone parsed. TIMEZONE_RE did not match. timestr: {timestr}')
return tzinfo
