如何在python中使用多处理将变量追加到类中？

import multiprocessing

class MyClass:
    def __init__(self):
        self.my_list = []

    def append_variable(self, variable):
        self.my_list.append(variable)

def worker(variable, my_class):
    my_class.append_variable(variable)

if __name__ == '__main__':
    my_class = MyClass()
    variables = [1, 2, 3, 4, 5]

    processes = []
    for variable in variables:
        p = multiprocessing.Process(target=worker, args=(variable, my_class))
        p.start()
        processes.append(p)

    for p in processes:
        p.join()

    print(my_class.my_list)