sympy/sympy — pull request #2057 by smichr (2013-04-30 06:59:16+00:00)
Title: 3788: simplification of powers

https://code.google.com/p/sympy/issues/detail?id=3788

These changes will allow SymPy to recognize `b**(1/log(b))` and `b**(1/(log(-b)+sign(im(b))*pi))` as `E`.