Update app.py

app.py

@@ -228,6 +228,10 @@
 import gradio as gr  
 import boto3
 import os
+from langchain.llms import Bedrock
+from langchain.chains import ConversationChain
+#from langchain.memory import ConversationBufferWindowMemory
+from langchain.prompts.prompt import PromptTemplate
 access_key_id = os.environ['aws_access_key_id']
 secret_access_key = os.environ['aws_secret_access_key']
 client = boto3.client(service_name='bedrock-runtime',region_name='us-east-1',aws_access_key_id=access_key_id,aws_secret_access_key=secret_access_key)