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_should_encode_map(self):
        encoded = cypher_repr(OrderedDict([("one", 1), ("two", 2.0), ("number three", u"three")]))
        assert encoded == u"{one: 1, two: 2.0, `number three`: 'three'}"