Update app.py

app.py

@@ -39,7 +39,7 @@ class Chatbot:
         self.index = index
         openai.api_key = api_key
         self.chat_history = []
-        #self.history_file = f"./chat_log.json"
+        self.history_file = f"./chat_log.json"
  
     def generate_response(self, user_input):
         query_engine = index.as_query_engine(llm=llm_predictor)
@@ -110,7 +110,7 @@ inputs = gr.components.Textbox(lines=7, label="Ask questions related to the cour
 outputs = gr.components.Textbox(label="Response")
 
 gr.Interface(fn=create_bot, inputs=inputs, outputs=outputs, title="Virtual TA",
-             description="This is a prototype of learning assistant designed for MIS 320 online section (Version 2.0). Powered by ChatGPT.\nNote: ChatGPT can make mistakes. Consider checking important information.",
+             description="This is a prototype of learning assistant designed for MIS 320 online section (Version 2.0). Powered by ChatGPT-4.\nNote: ChatGPT can make mistakes. Consider checking important information.",
              theme="compact").launch(share=True)