def test_repr(self):
        """
        C{repr(cipher)} returns a valid constructor call.
        """
        cipher = sslverify.OpenSSLCipher(self.cipherName)
        self.assertEqual(
            cipher,
            eval(repr(cipher), {'OpenSSLCipher': sslverify.OpenSSLCipher})
        )

        C{repr(cipher)} returns a valid constructor call.
        
stackoverflow/venv/lib/python3.6/site-packages/twisted/test/test_sslverify.py