def _parse_datetime(self, value):
        for format in self._DATETIME_FORMATS:
            try:
                return datetime.datetime.strptime(value, format)
            except __HOLE__:
                pass
        raise Error('Unrecognized date/time format: %r' % value)
dataset/ETHPy150Open D-L/SimpleBookMarks/src/tornado/options.py/_Option._parse_datetime