def remove(self, elem):
        """Remove a requirement.

        :param elem: a string or :class:`Requirement` instance.
        """
        if isinstance(elem, text_type):
            for requirement in self:
                if requirement.package == elem:
                    return super(Requirements, self).remove(requirement)
        return super(Requirements, self).remove(elem)
def test_validate_question_suggestion_count_fails_for_non_integer_count(
            self):
        community_contribution_stats = (
            suggestion_services.get_community_contribution_stats()
        )
        community_contribution_stats.question_suggestion_count = (
            self.non_integer_count
        )

        with self.assertRaisesRegex(
            utils.ValidationError,
            'Expected the question suggestion count to be an integer, '
            'received: %s.' % (
                community_contribution_stats.question_suggestion_count)
        ):
            community_contribution_stats.validate()