摘要：
1. 今天学了一些概念。（书的第41~43章）用这个方法可以分清楚class、object、instance## Animal is-a object (yes, sort of confusing) look at the extra creditclass Animal(object): pass## Dog is-a animal, it has-a nameclass Dog(Animal): def __init__(self, name): ## ?? self.name = name## Cat is-a animal, it has-a ... 阅读全文
