def is_ambiguous(self, dt):
dt = dt.replace(tzinfo=self)<EOL>wall_0 = enfold(dt, fold=<NUM_LIT:0>)<EOL>wall_1 = enfold(dt, fold=<NUM_LIT:1>)<EOL>same_offset = wall_0.utcoffset() == wall_1.utcoffset()<EOL>same_dt = wall_0.replace(tzinfo=None) == wall_1.replace(tzinfo=None)<EOL>return same_dt and not same_offset<EOL>
Whether or not the "wall time" of a given datetime is ambiguous in this
zone.

:param dt:
    A :py:class:`datetime.datetime`, naive or time zone aware.


:return:
    Returns ``True`` if ambiguous, ``False`` otherwise.

.. versionadded:: 2.6.0