validate.py

import gradio as gr
import os
o=os.environ['P']
def main()
    def checkp(p):
        if p == o:
            os.system('python app.py')
        elif p != o:
            pass
    with gr.Blocks() as validate:
        with gr.Row():
            pass_box=gr.Textbox()
            pass_btn=gr.Button()
            pass_btn.click(checkp,pass_box,None)
    validate.launch()
main()