This made me scratch my head until I read the previous file change line-by-line.

I really think the change in pyVmomi/Cache.py and this change should be moved to a different pull request. We should have an on-going task called pep8 fixes.

We want to keep each set of changes of this kind isolated because we need to cautiously move the code forward. We can't *fearlessly refactor* on this project yet because we don't have large amounts of test coverage.