Class madcomplex

Lib/test/test_descr.py:2945–2947

        self.assertIs((+a).__class__, float)

        class madcomplex(complex):
            def __repr__(self):
                return "%.17gj%+.17g" % (self.imag, self.real)
        a = madcomplex(-3, 4)
        self.assertEqual(repr(a), "4j-3")
        base = complex(-3, 4)