def test_versionComparison(self):
        """
        Versions can be compared for equality and order.
        """
        va = Version("dummy", 1, 0, 0)
        vb = Version("dummy", 0, 1, 0)
        self.assertTrue(va > vb)
        self.assertTrue(vb < va)
        self.assertTrue(va >= vb)
        self.assertTrue(vb <= va)
        self.assertTrue(va != vb)
        self.assertTrue(vb == Version("dummy", 0, 1, 0))
        self.assertTrue(vb == vb)

        Versions can be compared for equality and order.
        
stackoverflow/venv/lib/python3.6/site-packages/twisted/python/test/test_versions.py