use flake8 instead of pycodestyle

since there are thousands and thousands of errors in the tests files
at the moment, i propose fixing those errors in separate PR for now.

scripts/delete_sqs_queues.py

@@ -64,6 +64,7 @@ def delete_queue(queue_url):
         print('Deleted queue successfully {}'.format(response['ResponseMetadata']))
     else:
         print('Error occured when attempting to delete queue')
+        from pprint import pprint
         pprint(response)
     return response