def test_versionComparisonCaseInsensitive(self):
        """
        Version packages are compared case insensitively.
        """
        va = Version("twisted", 1, 0, 0)
        vb = Version("Twisted", 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("twisted", 0, 1, 0))
        self.assertTrue(vb == Version("TWISted", 0, 1, 0))
        self.assertTrue(vb == vb)

        Version packages are compared case insensitively.
        
stackoverflow/venv/lib/python3.6/site-packages/twisted/python/test/test_versions.py