sympy/sympy — pull request #791 by t-lenz (2011-11-30 18:34:05+00:00)
Title: Submission for Google Code-In

This patch implements a generic unicode representation for the sum sign
(sigma). It works fine with ".doprint(...)", but on my
installation "pprint" falls back to the old representation even
with use_unicode = True except in the file pretty.py itself (maybe there is another implementation
of pprint in some file? - The problems appear again if I say "from sympy import *" in pretty.py). I'm putting it up for review nonetheless as I
can't figure out the actual error. Any help would be very nice.