submit_button_example.py

import streamlit as st

# Grab SessionState.py from here:
# https://gist.github.com/tvst/036da038ab3e999a64497f42de966a92
# (This is a temporary solution until we provide an official API for this)
import SessionState


DEFAULT_FOO = ""
DEFAULT_BAR = ""

state = SessionState.get(foo=DEFAULT_FOO, bar=DEFAULT_BAR)

current_foo = st.text_input("Foo", DEFAULT_FOO)
current_bar = st.text_input("Bar", DEFAULT_BAR)

if st.button("Submit"):
    state.foo = current_foo
    state.bar = current_bar

st.write("Submitted foo = ", state.foo)
st.write("Submitted bar = ", state.bar)