如何覆盖pickle类中的dump/load方法 - 自定义pickle和unpickling - Python

import pickle

class MyClass:
    def __init__(self, value):
        self.value = value

    def __reduce__(self):
        return (MyClass, (self.value,))

# 自定义pickle和unpickling
class CustomPickle:
    @staticmethod
    def dump(obj, file_path):
        with open(file_path, 'wb') as file:
            pickle.dump(obj, file)

    @staticmethod
    def load(file_path):
        with open(file_path, 'rb') as file:
            return pickle.load(file)

# 创建一个MyClass实例
my_obj = MyClass("Hello, world!")

# 使用自定义pickle和unpickling
CustomPickle.dump(my_obj, 'my_obj.pkl')
loaded_obj = CustomPickle.load('my_obj.pkl')

print(loaded_obj.value)  # 输出：Hello, world!