Comment #31 on issue 1026 by [email protected]: pypy doesn't run sympy
http://code.google.com/p/sympy/issues/detail?id=1026

Yes, I noticed that too, there were a lot of new pypy incompatibilities introduced in the last months - which is a natural consequence of not running tests on pypy on a regular basis and asking patch authors to fix them.

I figure that the most productive way to approach this is by fixing the fundamental "bug": sympy is slower in pypy than in CPython, so it doesn't attract much interest. Once we can fix the core and show it can be fast in pypy, I believe that would drive more attention and testing.

Of course it may be hard to do so, speed issues can be tricky and require much specific knowledge about the internals of running code on pypy vs. CPython optimizations.

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