super

1、来自python官网的解释：

super([type[, object-or-type]])

Return a proxy object that delegates method calls to a parent or sibling class of type. This is useful for accessing inherited methods that have been overridden in a class. The search order is same as that used by guide to using super().

有关如何使用super()设计协同类的实际建议，请参阅guide to using super()。