python创建进程的两种方式

1.方式1

import time
import multiprocessing

def task(arg):
    time.sleep(2)
    print(arg)

def run():
    # 进程1
    p1 = multiprocessing.Process(target=task, args=(1,))
    p1.name = 'pp1'
    p1.start()

    # 进程2
    p2 = multiprocessing.Process(target=task, args=(2,))
    p2.name = 'pp2'
    p2.start()

if __name__ == '__main__':
    run()

2.方式2

import multiprocessing

class MyProcess(multiprocessing.Process):
    def run(self):
        print('当前进程', multiprocessing.current_process())

def run():
    p1 = MyProcess()
    p1.start()

    p2 = MyProcess()
    p2.start()

if __name__ == '__main__':
    run()