writer.py 文件源码

def serialize_datetime(value):
        """
        Returns a serialized version of a datetime object that is valid,
        executable python code. It converts timezone-aware values to utc with
        an 'executable' utc representation of tzinfo.
        """
        if value.tzinfo is not None and value.tzinfo != utc:
            value = value.astimezone(utc)
        value_repr = repr(value).replace("<UTC>", "utc")
        if isinstance(value, datetime_safe.datetime):
            value_repr = "datetime.%s" % value_repr
        return value_repr