streamlit login form

utils.py

import streamlit as st


def login_form():

    if not ("username" in st.session_state and "password" in st.session_state):
        
        st.write("## Login")

        with st.form("Login"):

            username = st.text_input("Username")
            password = st.text_input("Password")

            submitted = st.form_submit_button("Submit")

            if submitted:
                st.session_state.username = username
                st.session_state.password = password
                st.experimental_rerun()
            else:
                st.stop()


def logout_form():
    def inner():
        del st.session_state.username
        del st.session_state.password

    st.button("# Logout", on_click=inner)

don't use this script as it is; it's just example code