Refresh button using streamlit. Had to click on refresh twice to make it work

How to make it work on single click.

import streamlit as stimport pandas as pdimport numpy as np# Function to read DataFrame from CSVdef read_dataframe():    return pd.read_excel(r"E:\projects\smartscan2_1\patients_info.xlsx")def main():    st.title("Refresh DataFrame Example")    # Generate or retrieve the DataFrame    if 'data' not in st.session_state:        st.session_state.data = read_dataframe()    # Display the DataFrame    st.dataframe(st.session_state.data)    # Add a refresh button    if st.button("Refresh"):        # Read the DataFrame from CSV and store it in session_state        st.session_state.data = read_dataframe()if __name__ == "__main__":    main()