def loads(self, requirements_text):
        lines = re.findall(Requirement.spec_regex,
                           requirements_text,
                           re.MULTILINE)
        for line in lines:
            self.add(Requirement(line[0], "".join(line[1:])))
def test_between():
    """Greater than or equal to y and less than z."""
    p = are.between(3, 4)
    ps = [p(x) for x in range(1, 6)]
    assert ps == [False, False, True, False, False]