sympy/sympy — pull request #7956 by skirpichev (2014-09-03 11:25:05+00:00)
Title: relational ops: Don't use False as a replacement for 'other', if we can't sympify 'other'

Unfortunately, we can't use _sympifyit decorator, because in py2 class
instances are compared by object identity ("address") if no other
comparison helpers are defined.

fixes #7833