def __init__(self, package, version):
        """Construct a new requirement.

        :param package: the package name.
        :param version: a semver compatible version specification.
        """
        self.package = package
        self.version = version
        if self.version and not re.match(r"[<=>~]", version[:2]):
            self.version = "=={}".format(self.version)
def test_above():
    """Greater than y."""
    p = are.above(3)
    ps = [p(x) for x in range(1, 6)]
    assert ps == [False, False, False, True, True]