Update app.py

app.py

@@ -2,13 +2,17 @@ from langchain_core.prompts import ChatPromptTemplate, MessagesPlaceholder
 from langchain_core.messages import HumanMessage
 from langchain_core.messages import AIMessage
 from langchain.memory import ChatMessageHistory
-from langchain_openai import AzureChatOpenAI
 from pypdf import PdfReader
 import os
 import gradio as gr
+from openai import AzureOpenAI
 
-chat = AzureChatOpenAI(azure_deployment = "GPT-3")
-
+client = AzureOpenAI(
+            api_key=os.getenv("API"),
+            api_version="2023-07-01-preview",
+            azure_endpoint=os.getenv("URL"),
+            azure_deployment = "gpt-4o"
+        )
 def extract_text( pdf_path):
     # creating a pdf reader object
     reader = PdfReader(pdf_path)