Update app.py

app.py

@@ -21,11 +21,14 @@ import gradio as gr
 from openai import OpenAI
 
 # rebuild storage context and load knowledge index
-# from llama_index import StorageContext, load_index_from_storage, LLMPredictor, ServiceContext
-from llama_index.core import StorageContext
-from llama_index.core import load_index_from_storage
-from llama_index.llms.openai import OpenAI
-from llama_index.core import Settings
+from llama_index import StorageContext, load_index_from_storage, LLMPredictor, ServiceContext
+from llama_index.llms import OpenAI
+
+# for llama-index 0.10
+#from llama_index.core import StorageContext
+#from llama_index.core import load_index_from_storage
+#from llama_index.llms.openai import OpenAI
+#from llama_index.core import Settings
 
 # add datetime and ip to the log file
 from datetime import datetime;
@@ -39,13 +42,15 @@ from uuid import uuid4
 # generate an unique identifier for the session
 session_id = uuid4()
 
-# deprecated
+# deprecated (llama-index 0.9)
 storage_context = StorageContext.from_defaults(persist_dir='./')
 # gpt-3.5_turbo is the current default model
-Settings.llm = OpenAI(temperature=0.5, model="gpt-3.5_turbo")
-#service_context = ServiceContext.from_defaults(llm=llm_predictor)
-#index = load_index_from_storage(storage_context, service_context=service_context)
-index = load_index_from_storage(storage_context)
+llm = OpenAI(temperature=0.5, model="gpt-3.5_turbo")
+service_context = ServiceContext.from_defaults(llm=llm)
+index = load_index_from_storage(storage_context, service_context=service_context)
+# for llama-index 0.10
+#Settings.llm = OpenAI(temperature=0.5, model="gpt-3.5_turbo")
+#index = load_index_from_storage(storage_context)
 
 class Chatbot:
     def __init__(self, api_key, index):
@@ -68,7 +73,7 @@ class Chatbot:
         )
         
     def generate_response(self, user_input):
-        query_engine = index.as_query_engine(llm=llm)
+        query_engine = index.as_query_engine()
         response = query_engine.query(user_input)
         
         # generate response