input: from typing import List
  
  def create_html_form(action_url: str) -> str:
      """Create an HTML form with a submit button that sends information to a Python program.
      The form should have a 'post' method and the action should be set to the given URL.
      >>> create_html_form("action.py")
      '<form action="action.py" method="post"><input type="submit" value="Submit"></form>'
      """
output:     return f'<form action="{action_url}" method="post"><input type="submit" value="Submit"></form>'