in core/decorators.py there is unneeded try, except block
completed by: Steve Anton
mentors: Vladimir Perić, Aaron Meurer, Stefan Krastanov, Ondřej Čertík, Alexey Gudchenko
Please see http://code.google.com/p/sympy/issues/detail?id=2873 for full information on this task.
Please read https://github.com/sympy/sympy/wiki/gci-2011-landing before completing any tasks for SymPy.