def perUserLoginDelay():
        """
        Indicate whether the login delay period differs per user.

        @rtype: L{bool}
        @return: C{True} when the login delay differs per user, C{False}
            otherwise.
        """

        Indicate whether the login delay period differs per user.

        @rtype: L{bool}
        @return: C{True} when the login delay differs per user, C{False}
            otherwise.
        
stackoverflow/venv/lib/python3.6/site-packages/twisted/mail/interfaces.py