PEP8: W291 trailing whitespace
PEP8: W293 blank line contains whitespace
PEP8: E261 at least two spaces before inline comment
PEP8: E271 multiple spaces after keyword
PEP8: E272 multiple spaces before keyword
PEP8: E225 missing whitespace around operator
PEP8: W391 blank line at end of file
PEP8: E302 expected 2 blank lines, found 1
PEP8: E502 the backslash is redundant between brackets