Updates:
Labels: EasyToFix
Comment #3 on issue 3020 by [email protected]: & (__and__) operator
apparently not working
http://code.google.com/p/sympy/issues/detail?id=3020
Solving this is just a matter of adding the relevant magic methods to the
classes in sympy.core.relational. Making Relational inherit from Boolean
(in sympy.logic.boolalg) would be the cleanest way to do it, but I fear
that it'll probably cause weird failures. OTOH, the pedestrian way
(basically just copying and pasting from Boolean) should work without
trouble.
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