sympy/sympy — pull request #2947 by adityashah30 (2014-02-21 18:14:32+00:00)
Title: Fixed issue 1160 with the mathematica module

Fixed the issue 1160 with the sympy.parsing.mathematica module where in the expressions of the type "2*Sin[x+y]" and "Sin[x+y]*Cos[x+y]" were not parsed properly and a TypeError was raised. The issue is fixed by adding the relevant rules to parse the previously unhandled expressions.