Comment #1 on issue 1623 by smichr: match doesn't exclude functions
http://code.google.com/p/sympy/issues/detail?id=1623
Hmmm...this is not a quick fix. There are many things that depend on the
present
behavior (e.g. logcombine puts a log-exclude on a variable but then
actually tests
that variable to see if it matched a log term...with the broken nature of
things it
*has* to but it really shouldn't have to (I think) if things were working
properly).
If I do something like the following in symbol/matches things start to
break:
if pattern.exclude:
for x in pattern.exclude:
if type(x) is Wild:
if x in expr:
return None
elif expr.has(x):
return None
I'm not sure of the best way to fix this.
/c
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