Fixed pep8 errors:
* E127 continuation line over-indented for visual indent
* E226 missing whitespace around arithmetic operator
* E231 missing whitespace after ','
* E241 multiple spaces after ','
* E261 at least two spaces before inline comment
* E301 expected 1 blank line, found 0
* E302 expected 2 blank lines, found 1
* E303 too many blank lines (2)
* E501 line too long (80 > 79 characters)
Fixed pep8 warnings:
* W292 no newline at end of file
* W391 blank line at end of file
Change-Id: I1736f8a42c3a335a17a0b9b6e64782487ed3a495