Whitespace tweaks suggested by pep8.py
Whitespace tweaks suggested by pep8.py

git-svn-id: 655ff90ec95d1eeadb1ee4bb9db742a3c015d499@4944 8cd8332f-0806-0410-a4b6-96f4b9520244

obeattie/sqlalchemy,obeattie/sqlalchemy,obeattie/sqlalchemy