Python 查看线程的进程id

import os
from threading import Thread
# from multiprocessing import Process
def f1(n):
    print('1号',os.getpid())
    print('%s号线程任务'%n)
def f2(n):
    print('2号',os.getpid())
    print('%s号线程任务'%n)
if __name__ == '__main__':
    t1 = Thread(target=f1,args=(1,))
    t2 = Thread(target=f2,args=(2,))
    t1.start()
    t2.start()
    print('主线程',os.getpid())
    print('主线程')