filtering out files from hisitory

app.py

@@ -10,14 +10,15 @@ api_key = os.getenv("OPENAI_APIKEY")
 def chat(message, history):
     history_openai_format = []
     for human, assistant in history:
-        history_openai_format.append({"role": "user", "content": human })
-        history_openai_format.append({"role": "assistant", "content":assistant})
+        if (assistant is not None) and (type(human) is str):
+            history_openai_format.append({"role": "user", "content": human })
+            history_openai_format.append({"role": "assistant", "content":assistant})
         
     history_openai_format.append({"role": "user", "content": message['text']})
   
-    return f"{history}\n----\n{message}\n----\n{history_openai_format}"
+#    return f"{history}\n----\n{message}\n----\n{history_openai_format}"
 
-def comment():
+# def comment():
     response = client.chat.completions.create(
         model='gpt-3.5-turbo',
         messages= history_openai_format,