stdtypes.py 文件源码

def format(self, value, property, context):
        if isinstance(value, (datetime.datetime, datetime.time)):
            if value.tzinfo and value.utcoffset() == datetime.timedelta():
                return value.replace(tzinfo=None).isoformat() + 'Z'
            return value.isoformat()
        elif isinstance(value, datetime.date):
            return value.isoformat()
        else:
            raise ValueError()