updated app

app.py

@@ -5,8 +5,10 @@ import os
 import openai
 import time
 
-#Import LLM wrapper
-from langchain.llms import OpenAI
+#OpenAI model deprecated from langchain
+#from langchain.llms import OpenAI
+#Import OpenAI Chat wrapper
+from langchain.chat_models import ChatOpenAI
 #Import Prompt Template
 from langchain.prompts import PromptTemplate
 #Import chains
@@ -18,7 +20,7 @@ from langchain.chains import SimpleSequentialChain
 
 def load_chain(api_key):
     os.environ["OPENAI_API_KEY"] = api_key
-    llm = OpenAI(model_name="gpt-3.5-turbo", temperature=0.1)
+    llm = ChatOpenAI(model_name="gpt-3.5-turbo", temperature=0.1)
     #user_in = input("Please describe your Python project in one to two sentences:  ")
 
     first_prompt = PromptTemplate(