app.py

import streamlit as st

# Create a list to hold messages
messages = []

# Define a function to handle form submissions
def handle_form_submit(form_data):
    message = form_data["message"]
    messages.append(message)

# Define the layout of the app
st.title("Scrollable Output and Submitable Form")
st.write("Enter a message below and click 'Submit' to add it to the output:")

# Add the input form
form = st.form(key="message_form")
message_input = form.text_input(label="Message:")
submit_button = form.form_submit_button(label="Submit", on_click=handle_form_submit, args=(form_data,))
st.write("")

# Add the output window
if len(messages) > 0:
    st.write("Output:")
    with st.beta_container():
        for message in messages:
            st.write("- " + message)
else:
    st.write("No messages yet.")



"""import pexpect
import time

# Start the other program
child = pexpect.spawn("python DO_NOT_COMMIT.py", encoding='utf-8', timeout=None)

while True:
    child.expect(">>>>>")
    print(child.before)
    child.sendline(input(">>>>>"))"""