Update app.py

app.py

@@ -1,7 +1,7 @@
-pip install langchain-huggingface
-pip install langchain-community
-pip install transformers
-pip install streamlit
+!pip install langchain-huggingface
+!pip install langchain-community
+!pip install transformers
+!pip install streamlit
 
 import streamlit as st
 from langchain_huggingface import HuggingFaceLLM