fixed several pep8 issues

  * E265 block comment should start with '# '
  * E713 test for membership should be 'not in'

Tested with pep8 version 1.5.6 (2014-04-14).

Removed "WTF?" comment.

Change-Id: I887500d839f6804923e8b8c66340f15eb4a6b36a