查看线程的进程id

import os
from threading import Thread
def f1(n):
    print(n)
    print('%d号线程的id是%s'%(n,os.getpid()))
    
if __name__ == '__main__':
    t1 = Thread(target= f1,args=(1,))
    t1.start
    print('主线程的id是',os.getpid())'#getpid作用是获取当前线程的id