多线程与多进程pid的比较

code

from threading import Thread
from multiprocessing import Process
import os
 
def work(name):
    print('{}的pid是'.format(name), os.getpid())
 
if __name__ == '__main__':
    # part1:在主进程下开启多个线程,每个线程都跟主进程的pid一样
    t1 = Thread(target=work,args=("thread1",))
    t2 = Thread(target=work,args=("thread2",))
    t1.start()
    t2.start()
    print('主线程/主进程pid', os.getpid())
 
    # part2:开多个进程,每个进程都有不同的pid
    p1 = Process(target=work,args=("progress1",))
    p2 = Process(target=work,args=("progress2",))
    p1.start()
    p2.start()
    print('主线程/主进程pid', os.getpid())

outputs

macname@MacdeMacBook-Pro py % python3 cccccc.py
thread1的pid是 78870
thread2的pid是 78870
主线程/主进程pid 78870
主线程/主进程pid 78870
progress1的pid是 78871
progress2的pid是 78872
macname@MacdeMacBook-Pro py %