'Add a user and password to the last specified domain.'

def opt_user(self, user_pass):

    try:
        (user, password) = user_pass.split('=', 1)
    except ValueError:
        raise usage.UsageError("Argument    to    --user    must    be    of    the    form    'user=password'")
    if self.last_domain:
        self.last_domain.addUser(user, password)
    else:
        raise usage.UsageError('Specify    a    domain    before    specifying    users')
