base.py 文件源码

def bind_processor(self, dialect):
        datetime_datetime = datetime.datetime
        datetime_date = datetime.date
        format = self._storage_format

        def process(value):
            if value is None:
                return None
            elif isinstance(value, datetime_datetime):
                return format % {
                    'year': value.year,
                    'month': value.month,
                    'day': value.day,
                    'hour': value.hour,
                    'minute': value.minute,
                    'second': value.second,
                    'microsecond': value.microsecond,
                }
            elif isinstance(value, datetime_date):
                return format % {
                    'year': value.year,
                    'month': value.month,
                    'day': value.day,
                    'hour': 0,
                    'minute': 0,
                    'second': 0,
                    'microsecond': 0,
                }
            else:
                raise TypeError("SQLite DateTime type only accepts Python "
                                "datetime and date objects as input.")
        return process