Update app.py

app.py

@@ -1,3 +1,12 @@
+%%capture
+
+%pip install langchain langchain-community
+%pip install langchainhub
+%pip install langchain-chroma
+%pip install langchain-groq
+%pip install langchain-huggingface
+%pip install gradio
+
 from langchain_community.memory import ConversationBufferMemory
 from langchain_community.chat_message_histories import StreamlitChatMessageHistory
 from langchain_groq import ChatGroq