pages/page_2.py

# page_2.py inside 'pages' folder
import streamlit as st

def run(go_to_main, go_to_page_1):
    st.markdown("# Page 2 📊")
    st.button('Go to Main Page', on_click=go_to_main)
    st.button('Go to Page 1', on_click=go_to_page_1)
    # Rest of your page 2 code