class Auth:
  _instance = None;
  def __init__(self, user, pswd):
    # some initialization
    self._id = None
    pass
  def getId(self):
    return self._id
  @staticmethod
  def getInstance(user, pswd):
    if Auth._instance is None:
      Auth._instance = Auth(user, pswd)
    return Auth._instance

# later use authorization as Auth.getInstance().getId();

$('#form').submit(function(e) {
      var $form = $(this);
      console.log($form.serialize());
      return false;
      ...
});