Method mro

Lib/test/test_descr.py:4444–4449

(self)

                self.flag = 0
                return super(WorkOnce, self).__new__(WorkOnce, name, bases, ns)
            def mro(self):
                if self.flag > 0:
                    raise RuntimeError("bozo")
                else:
                    self.flag += 1
                    return type.mro(self)

        class WorkAlways(type):
            def mro(self):