Comment #1 on issue 2472 by matt...@gmail.com: Regression in
sympy/polys/tests/test_rootoftools.py
http://code.google.com/p/sympy/issues/detail?id=2472
I tested all supported Python versions on 32/64-bit and got no test
failures. Can you run the following code:
In [1]: var('r')
Out[1]: r
In [2]: f = x**3 + x + 3
In [3]: g = Lambda(r, log(r*x))
In [4]: for i in xrange(1000):
...: a = RootSum((x - 7)*f**3, g)
...: b = log(7*x) + 3*RootSum(f, g)
...: if a != b:
...: break
...:
...:
In [5]: i
Out[5]: 999
You can choose a larger value than 1000 if needed (if it the loop ends
before n-1, then there is a problem). You can also replace RootOf on
line "a = ..." with contents of line "b = ..." (yes, the same expression
twice, because before your patch I got random failures in both cases).
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