Update app.py

app.py

@@ -5,7 +5,7 @@ import streamlit as st
 bardkey = os.environ.get("BARD_API_KEY")
 
 bard = Bard(session=bardkey)
-if query = st.chat_input("Hi, how can I help you"):
+if query := st.chat_input("Hi, how can I help you"):
     ans = bard.get_answer(query)
     with st.chat_message("assistant"):
         st.write(ans['content'])