sympy/sympy — pull request #901 by Anxuiz (2011-12-28 02:23:51+00:00)
Title: [GCI] Fix PyFlakes errors in sympy.physics.

These commits fix PyFlakes errors in sympy.physics and its submodules including tests.

GCI Task: http://google-melange.appspot.com/gci/task/view/google/gci2011/7134380