$ python user_app.cgi create
<html>
  <body>

    <h1>Create User</h1>

    <div id="main-content">
<form action="user_app.cgi" method="post">
  <input type="hidden" name="action" value="create" />
<p>
  Name:  <input type="text" name="name"  value="" /><br />
  Email: <input type="text" name="email" value="" /><br />
  Gender:
  <input type="radio" name="gender" value="m"  />Male
  <input type="radio" name="gender" value="f"  />Female
</p>
  <input type="submit" value="Create" />
</form>

    </div>

    <div id="footer">
<hr />
<address>
  <a href="mailto:webmaster@example.com">webmaster@example.com</a>
</address>
    </div>

  </body>
</html>
