def to_string(self, value):
if isinstance(value, basestring):
return dateparser_parse(value).strftime(
self._output_format) if self._output_format else value
elif isinstance(value, self._stdlib_class):
return value.strftime(
self._output_format
) if self._output_format else value.isoformat()
else:
raise ValueError('Value `{}` is neither string nor {}'.format(
value, self._stdlib_class))
def get_seconds_from_epoch(timestamp: str) -> float:
"""If dateutil.parser.parse cannot parse DST timezones
(e.g. PDT, EDT) correctly, then use dateparser.parse instead.
"""
utc_epoch = datetime(1970, 1, 1, tzinfo=timezone.utc)
utc_t = None
try:
with warnings.catch_warnings():
warnings.simplefilter("ignore")
utc_t = dateutil_parse(timestamp)
except Exception:
pass
if utc_t is None or utc_t.tzname() not in ("UTC", "Z"):
utc_t = dateparser_parse(timestamp)
utc_t = utc_t.astimezone(timezone.utc)
return (utc_t - utc_epoch).total_seconds()
def from_string(self, value):
return dateparser_parse(value.strip(self.fill_char),
**self._parse_kwargs)