input: def create_html_form(action: str) -> str:
      """
      Create an HTML form with a submit button to send information to a specified action.
  
      >>> create_html_form("action.py")
      '<form action="action.py" method="post"><input type="submit" value="Submit"></form>'
      """
output:     return f'<form action="{action}" method="post"><input type="submit" value="Submit"></form>'