test_coercion.py 文件源码

def test_infix_binops(self):
        for ia, a in enumerate(candidates):
            for ib, b in enumerate(candidates):
                results = infix_results[(ia, ib)]
                for op, res, ires in zip(infix_binops, results[0], results[1]):
                    if res is TE:
                        self.assertRaises(TypeError, eval,
                                          'a %s b' % op, {'a': a, 'b': b})
                    else:
                        self.assertEqual(format_result(res),
                                         format_result(eval('a %s b' % op)),
                                         '%s %s %s == %s failed' % (a, op, b, res))
                    try:
                        z = copy.copy(a)
                    except copy.Error:
                        z = a # assume it has no inplace ops
                    if ires is TE:
                        try:
                            exec 'z %s= b' % op
                        except TypeError:
                            pass
                        else:
                            self.fail("TypeError not raised")
                    else:
                        exec('z %s= b' % op)
                        self.assertEqual(ires, z)