app.py

import streamlit as st
import pandas as pd

#Globals
legal_numbers = [1,2,3,4,5,6,7,8,9]

def get_userInput(): 
    input = st.text_input("Enter a number between 1 to 9: ", key="input")
    return input

def validate_userInput(user_input):
    if user_input.isdigit():
        return True
    else:
        return "Please enter a digit between 1 to 9."

def display_board():
    df = pd.DataFrame(
        [
            {" X ", " O ", " X "},
            {"   ", "   ", "   "},
            {" ... ", " ... ", " ... "},
        ]
    )
    st.dataframe(df, use_container_width=True)

#def update_legalNumbers():
    
    
    
#UIApp starts here
st.set_page_config(page_title="Python - Tic Tac Toe", page_icon=":python:")
st.header("Python - Tic Tac Toe")
st.text("Legal Numbers: ", legal_numbers.join(","))

user_input=get_userInput()
response=validate_userInput(user_input)

#UI Buttons
submit=st.button('Submit')
replay=st.button('Replay')

#Button functionality
if submit:
    st.subheader("")
    st.write(response)

if replay:
    display_board()