Cant Pickle记忆类实例

Question

这是我正在使用的代码import [e-mail] mystery(object):    def __init__(self, num):        self.num = numfeat = mystery(1)with open('num.pickle', 'wb') as f:    pickle.dump(feat,f)这给了我以下错误：PicklingError: Can't pickle <class '__main__.mystery'>: it's not the same object as __main__.mystery我希望1）理解为什么会发生这种情况，2）找到一种解决方案，使我可以对对象进行腌制（不删除备忘录）。理想情况下，该解决方案不会更改对pickle的调用。使用funcy == 1.10运行python 3.6

Answer 1

另一种方法是

class _mystery(object):

    def __init__(self, num):

        self.num = num

@funcy.memoize

def mystery(num):

    return _mystery(num)