PEP8: Fix E201 whitespace after '('
PEP8: Fix E202 whitespace before ')'
PEP8: Fix E203 whitespace before ','
PEP8: Fix E124 closing bracket does not match visual indentation
PEP8: Fix E301 expected 1 blank line, found 0
PEP8: Fix E261 at least two spaces before inline comment
PEP8: Fix E221 multiple spaces before operator
PEP8: Fix E241 multiple spaces after ','
PEP8: Fix E721 do not compare types, use 'isinstance()'
Merge from master
PEP8: Fix errors from merge
Merge branch 'master' into pep8
Use scipy.lib.six.string_types in place of basestring
Merge pull request #2451 from timleslie/pep8

PEP-8 conformance improvements - part II