数据共享Manager（Python）

from multiprocessing import Process,Manager,Lock

def change_dic(dic,lock):
    with lock:
        dic['count'] -= 1

if __name__ == '__main__':
    # m = Manager()
    with Manager() as m:
        lock = Lock()
        dic = m.dict({'count': 100})
        # dic = {'count': 100}
        p_l = []
        for i in  range(100):
            p = Process(target=change_dic,args=(dic,lock))
            p.start()
            p_l.append(p)
        for p in p_l : p.join()
        print(dic)