Inet class does not work for equality check

Submitted by: mtaylor@arbor.net

The Inet class does not implement __eq__, and the standard "object" class seems to always return False.

python2.7:

import psycopg2, psycopg2.extras
psycopg2.__version__
  -> '2.5.2 (dt dec mx pq3 ext)'
psycopg2.extras.Inet('1.2.3.4') == psycopg2.extras.Inet('1.2.3.4')
   -> False
>>> psycopg2.extras.Inet('1.2.3.4') in [psycopg2.extras.Inet('1.2.3.4'), psycopg2.extras.Inet('1.2.5.6')]
  -> False
>>> psycopg2.extras.Inet('1.2.3.4').addr == psycopg2.extras.Inet('1.2.3.4').addr
True

Fix:

psycopg2.extras.Inet.__eq__ = lambda self, other: isinstance(other, psycopg2.extras.Inet) and self.addr == other.addr or False

psycopg2.extras.Inet.__ne__ = lambda self, other: not self.__eq__(other)
>>> psycopg2.extras.Inet('1.2.3.4') == psycopg2.extras.Inet('1.2.3.4') -> True >>> psycopg2.extras.Inet('1.2.3.4') in [psycopg2.extras.Inet('1.2.3.4'), psycopg2.extras.Inet('1.2.5.6')] -> True

I'd rather see the __eq__ being implemented, versus checking .addr equality.
FWIW, the NumericRange (ala Range) defines an __eq__ operator.