def clean_semver(cls, version_spec):
        return re.sub(r"([<>=~])\s+?v?", "\\1", version_spec, re.IGNORECASE)
def test_boolean_with_python_bool(self):
        """Input that is already a native python `bool` should be passed through
        without extra processing."""
        assert_equal(inputs.boolean(True), True)
        assert_equal(inputs.boolean(False), False)