def test_strWithDev(self):
        """
        Calling C{str} on a version with a dev release includes the dev
        release.
        """
        self.assertEqual(str(Version("dummy", 1, 0, 0, dev=1)),
                         "[dummy, version 1.0.0dev1]")

        Calling C{str} on a version with a dev release includes the dev
        release.
        
stackoverflow/venv/lib/python3.6/site-packages/incremental/tests/test_version.py