How to use the idna.intranges.intranges_contain function in idna

def _test_containment(self, ints, disjoint_ints):
        ranges = intranges_from_list(ints)
        for int_ in ints:
            assert intranges_contain(int_, ranges)
        for int_ in disjoint_ints:
            assert not intranges_contain(int_, ranges)

def _test_containment(self, ints, disjoint_ints):
        ranges = intranges_from_list(ints)
        for int_ in ints:
            assert intranges_contain(int_, ranges)
        for int_ in disjoint_ints:
            assert not intranges_contain(int_, ranges)

check_hyphen_ok(label)
    check_initial_combiner(label)

    for (pos, cp) in enumerate(label):
        cp_value = ord(cp)
        if intranges_contain(cp_value, idnadata.codepoint_classes['PVALID']):
            continue
        elif intranges_contain(cp_value, idnadata.codepoint_classes['CONTEXTJ']):
            try:
                if not valid_contextj(label, pos):
                    raise InvalidCodepointContext('Joiner {0} not allowed at position {1} in {2}'.format(
                        _unot(cp_value), pos+1, repr(label)))
            except ValueError:
                raise IDNAError('Unknown codepoint adjacent to joiner {0} at position {1} in {2}'.format(
                    _unot(cp_value), pos+1, repr(label)))
        elif intranges_contain(cp_value, idnadata.codepoint_classes['CONTEXTO']):
            if not valid_contexto(label, pos):
                raise InvalidCodepointContext('Codepoint {0} not allowed at position {1} in {2}'.format(_unot(cp_value), pos+1, repr(label)))
        else:
            raise InvalidCodepoint('Codepoint {0} at position {1} of {2} not allowed'.format(_unot(cp_value), pos+1, repr(label)))

    check_bidi(label)