Python 基于时间的进程通信

import time
from multiprocessing import Process,Event
def f1(e):
    time.sleep(2)
    n = 100
    print("子进程计算结果位:",n)
    e.set()
if __name__ == '__main__':
    e = Event()
    p = Process(target=f1,args=(e,))
    p.start()

    print("主进程等待")
    e.wait()
    print("结果已经写入文件了,可以拿到这值")