Flake8 whitespace

Author: mdmintz

examples/rate_limiting_test.py

@@ -10,5 +10,5 @@ def print_item(self, item):
 
     def test_rate_limited_printing(self):
         print "\nRunning rate-limited print test:"
-        for item in xrange(1,11):
+        for item in xrange(1, 11):
             self.print_item(item)