多线程修改全局变量

from threading import Thread

import  time

num=0

def work1():

time.sleep(1)

print("线程一%d"%num)

defwork2():

globalnum #在函数内部修改全局变量要加global声明

num+=1

print("线程二%d"%num)

t=Thread(target=work1)

t1=Thread(target=work2)

t.start()

t1.start()