Status: New
Owner: ----
Labels: Type-Defect Priority-Medium

New issue 1595 by mattpap: LambertW(-number) and sorted don't cooperate
http://code.google.com/p/sympy/issues/detail?id=1595

I'm now porting SymPy to work with new polynomials. Here is one of bugs I
found:

In [35]: sorted([LambertW(-10), log(2)])
---------------------------------------------------------------------------
TypeError                                 Traceback (most recent call last)

/home/matt/repo/git/sympy/<ipython console> in <module>()

TypeError: __nonzero__ should return bool or int, returned StrictInequality

In [36]: sorted([LambertW(10), log(2)])
Out[36]: [log(2), LambertW(10)]


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