columns.py 文件源码

def to_python(self, value):
        if value is None:
            return
        if isinstance(value, datetime):
            if DateTime.truncate_microseconds:
                us = value.microsecond
                truncated_us = us // 1000 * 1000
                return value - timedelta(microseconds=us - truncated_us)
            else:
                return value
        elif isinstance(value, date):
            return datetime(*(value.timetuple()[:6]))

        return datetime.utcfromtimestamp(value)