摘要：
class Chain(object): def __init__(self, path=''): self._path = path def __getattr__(self, path): return Chain('%s/%s' % (self._path, path)) def __str_ 阅读全文
摘要：
多态代码实现：class Animal(object): def __init__(self, name): # Constructor of the class self.name = name def talk(self): # Abstract method, defined by conve 阅读全文