[Quality] Add code formatter and linter (#326)

examples/openai_client.py

@@ -12,8 +12,13 @@ print("Models:", models)
 # Test completion API
 stream = True
 completion = openai.Completion.create(
-    model=model, prompt="A robot may not injure a human being", echo=False, n=2,
-    best_of=3, stream=stream, logprobs=3)
+    model=model,
+    prompt="A robot may not injure a human being",
+    echo=False,
+    n=2,
+    best_of=3,
+    stream=stream,
+    logprobs=3)
 
 # print the completion
 if stream: