Improve PEP8 compliance in setup.py

 from setuptools import setup, find_packages
-import sys, os
+import os
+import sys
 
 version = '0.0'
 
@@ -8,7 +9,7 @@ setup(name='op_robot_tests',
       description="",
       long_description="""\
 """,
-      classifiers=[], # Get strings from http://pypi.python.org/pypi?%3Aaction=list_classifiers
+      classifiers=[],  # Get strings from http://pypi.python.org/pypi?%3Aaction=list_classifiers
       keywords='',
       author='',
       author_email='',