在多进程中跨所有进程共享类的最简单方法

from multiprocessing import Process, Value

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

    def increment(self):
        self.value += 1

def worker(shared_instance):
    shared_instance.increment()

if __name__ == '__main__':
    shared_value = Value('i', 0)
    shared_instance = SharedClass(shared_value)

    processes = []
    for _ in range(5):
        p = Process(target=worker, args=(shared_instance,))
        p.start()
        processes.append(p)

    for p in processes:
        p.join()

    print(shared_instance.value)