Comment #28 on issue 1924 by [email protected]: Eq() gets .as_basic() method
http://code.google.com/p/sympy/issues/detail?id=1924

As a side note, I'm curious why:

In [1]: Eq(FiniteSet(1, 2), FiniteSet(1, 2, 3))
Out[1]: {1, 2} = {1, 2, 3}

although:

In [2]: Eq(1, 2)
Out[2]: False

I think [1] should evaluate to False automatically. Besides this, FiniteSet is not a subclass of Expr, so .as_expr() should raise an exception in this case.

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