Comment #3 on issue 1358 by wflynny: (e*f*e*f).subs(e*f,f*e+h) fails if e*f
is not commutative
http://code.google.com/p/sympy/issues/detail?id=1358
This patch needs to be more general. I get a lot of errors from the first
portion
when I compile some of my own code. I think the problem comes from the fact
that not
all exponentiation has an integer valued exponent. I think the exceptions
that I am
throwing are caused by the snippet:
"
if i.is_Pow:
for j in range(i.exp):
l_temp.append(i.base) #convert (...h**2...) to
(...h,h...)
"
If you have just an exp(I*x), then the range(i.exp) term hits a Wild, not a
integer.
Thus, even if you just want to just print an expression with some symbolic
exponents,
things go nuts.
Hopefully this helps.
-wflynny
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