开启子进程的两种方式

方式一

from multiprocessing import Process
import time

def task(name):
    print('%s is running' % name)
    time.sleep(3)
    print('%s is done' % name)


if __name__ == '__main__':
    p = Process(target=task, args=('子进程',)) #args 是元祖，结束是必须逗号
    p.start()

    print('run')

方式二

from multiprocessing import Process
import time
class Myprocess(Process):
    def __init__(self, name):
        super().__init__()
        self.name = name

    def run(self): #必须是run方法，否则无法启动，应该产生实例化，运行时，start和run是对应关系
        print('%s is running' % self.name)
        time.sleep(3)
        print('%s is done' % self.name)

if __name__ == '__main__':
    p = Myprocess('子进程')
    p.start()

    print('zhu')