I've added a PR which should fix this. Do you think the documentation should also be updated to change "By default, the :meth:`__hash__` values of str, bytes and datetime objects are "salted" with an unpredictable random value." to "By default, the :meth:`__hash__` values of str, bytes, datetime.date, datetime.time and datetime.datetime objects are "salted" with an unpredictable random value."?

Technically, there are other objects in datetime such as datetime.relativedelta whose hash values are _not_ non-deterministic.