Called by built-in function :func:`hash` and for operations on members of
hashed collections including :class:`set`, :class:`frozenset`, and
- :class:`dict`. :meth:`__hash__` should return an integer. The only required
+ :class:`dict`. The ``__hash__()`` method should return an integer. The only required
property is that objects which compare equal have the same hash value; it is
advised to mix together the hash values of the components of the object that
also play a part in comparison of objects by packing them into a tuple and