True, we have been breaking two pep8 rules: 80 columns limit and multiple imports in a single line. I'm used to break both rules for convenience on my side, but I'm fine to stick to PEP8 if everyone agree.

I think at some point PEP8 recommended sorting the imports by alphabetical order within each group, is that still true? I can't find a word about it at http://legacy.python.org/dev/peps/pep-0008/#imports