import sys
import os

# This tells the server to use your virtual environment's Python
INTERP = "/var/www/vhosts/mystifying-hamilton.72-61-78-56.plesk.page/httpdocs/venv/bin/python3"
if sys.executable != INTERP:
    os.execl(INTERP, INTERP, *sys.argv)

def application(environ, start_response):
    start_response('200 OK', [('Content-Type', 'text/html')])
    return [b"<h1>Success! Python is live.</h1>"]