Comment #4 on issue 3635 by [email protected]: Backwards compatibility
with old assumptions
http://code.google.com/p/sympy/issues/detail?id=3635
This was the commit that changed it originally (see also issue 2346).
commit 8944badc0636536bbdf1dfe4f3597cb8ca1ae20a
Author: Ronan Lamy <[email protected]>
Date: Mon May 9 03:29:20 2011 +0100
2346: Fix Basic.__eq__ to consider assumptions, and be consistent with
__hash__.
The main consequence of this is that Symbol('x') != Symbol('x',
real=True).
Some tests in sympy.geometry had to be updated to explicitly set the
proper
assumptions on the symbols involved, and one is now XFAILing.
If you look at the diff, there were very few changes that needed to be
made, even though it had been like that for a while. One can try making
the reverse change in master and seeing how many tests fail. I suspect it
won't be very many.
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