def __init__(self, name, filename=None):
        self.name = name
        super(NamedRequirements, self).__init__(filename=filename)
def check_bad_url_raises(value):
    try:
        inputs.url(value)
        assert False, "shouldn't get here"
    except ValueError as e:
        assert_equal(six.text_type(e), u"{0} is not a valid URL".format(value))