自定义类

from multiprocessing import  Process
import  time
class ClockPorcess(Process):
    def __init__(self,value):
        Process.__init__(self)
        self.value=value

    def run(self):
        n=5
        while n>0:
            print(" The time is {}".format(time.ctime()))
            time.sleep(self.value)
            n-=1
#s使用自己的进程类创建进程对象
p=ClockPorcess(2)
#start后会自动执行run函数
p.start()
p.join()