many pep8 improvements

cgihandler.py

@@ -56,7 +56,7 @@ import wsgiref.handlers
 
 path = os.path.dirname(os.path.abspath(__file__))
 os.chdir(path)
-sys.path = [path]+[p for p in sys.path if not p==path]
+sys.path = [path] + [p for p in sys.path if not p == path]
 
 import gluon.main