所以，这里是我可以在Python做： class Copiable(object):
def copy_from(self, other):
""" This method must be implemented by subclasses to define their
own copy-behaviour. Never forget to call the
我有混合KnockoutJS观测和标准属性的对象： var original = {
a: ko.observable("a"),
b: "b"
};
我要创建original对象的克隆，而不提及它，这样我可以做： var cloned = clone(original);
cloned.a("a cloned");
original.a(); //-> "a" ER