day10-02_多线程之进程与线程的pid

一、多个线程之间PID的区别

主进程跟线程的pid是一样的

from threading import Thread
from multiprocessing import Process
import os

def task():
    print('%s is running' %os.getpid())

if __name__ == '__main__':
    t1=Thread(target=task,)
    t2=Thread(target=task,)
    t1.start()
    t2.start()
    print('主',os.getpid())

输出：
6700 is running
6700 is running
主 6700

二、多个进程PID的区别

多个进程的PID完全不一样

from threading import Thread
from multiprocessing import Process
import os

def task():
    print('%s is running' %os.getpid())

if __name__ == '__main__':
    t1=Process(target=task,)
    t2=Process(target=task,)
    t1.start()
    t2.start()
    print('主',os.getpid())

输出：
主 2040
7104 is running
2768 is running