Way to refresh the chat? about st-chat HOT 1 CLOSED

import streamlit as st

from streamlit_chat import message

def on_input_change():
    user_input = st.session_state.user_input
    st.session_state.past.append(user_input)
    st.session_state.generated.append("The messages from Bot")

def on_btn_click():
    del st.session_state.past[:]
    del st.session_state.generated[:]


st.session_state.setdefault('past', [])
st.session_state.setdefault('generated', [])

st.title("Chat placeholder")

chat_placeholder = st.empty()

with chat_placeholder.container():
    for i in range(len(st.session_state['generated'])):                
        message(st.session_state['past'][i], is_user=True, key=f"{i}_user")
        message(st.session_state['generated'][i], key=f"{i}")
    
    st.button("Clear message", on_click=on_btn_click)

with st.container():
    st.text_input("User Input:", on_change=on_input_change, key="user_input")