Updates:
Status: Duplicate
Cc: smichr
Mergedinto: 1766
Comment #1 on issue 1911 by asmeurer: Error in expansion of power with
noncommutative base
http://code.google.com/p/sympy/issues/detail?id=1911
Yes, I think expand should definitely return x*y*x*y*x*y. That is the
whole purpose of expand().
However, this already seems to be fixed in Chris's 1766 branch.
In [1]: x = Symbol('x', commutative=False)
In [2]: y = Symbol('y', commutative=False)
In [3]: ((x*y)**3).expand()
Out[3]: x⋅y⋅x⋅y⋅x⋅y
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