def dst(self):
if self._tzinfo is None:<EOL><INDENT>return None<EOL><DEDENT>offset = self._tzinfo.dst(None)<EOL>offset = _check_utc_offset("<STR_LIT>", offset)<EOL>if offset is not None:<EOL><INDENT>offset = timedelta._create(<NUM_LIT:0>, offset * <NUM_LIT>, <NUM_LIT:0>, True)<EOL><DEDENT>return offset<EOL>
Return 0 if DST is not in effect, or the DST offset (in minutes
        eastward) if DST is in effect.

        This is purely informational; the DST offset has already been added to
        the UTC offset returned by utcoffset() if applicable, so there's no
        need to consult dst() unless you're interested in displaying the DST
        info.