Update app.py

app.py

@@ -89,7 +89,7 @@ def chatbot(input, localvar):
             localvar['race'] = localRace(getChooseRole(reply))
             ans = "I choose "+ localvar['race'] +" as my race." + classAsk
             logging.info("ChooseRole:"+ans)
-        if len(messages) == 4:
+        if len(messages) == 3:
             localvar['class'] = getChooseClass(reply)
             ans = "My Race is "+ localvar['race'] +"，I choose "+ localvar['class'] +" as my class." + classAns
             logging.info("ChooseClass:"+ans)