python线程对象join的用法

一 代码

import threading
import time
def func1(x, y):
    for i in range(x, y):
        print(i, end=' ')
    print()
    time.sleep(10)
t1=threading.Thread(target = func1, args = (15, 20))
t1.start()
t1.join(5)
t2=threading.Thread(target = func1, args = (5, 10))
t2.start()
#t2.join() #the program will not continue until t2 thread finishs
print(t1.isAlive())
time.sleep(2) #try to comment this line to see the different result
print(t2.isAlive())

二 运行结果

E:\python\python可以这样学\第13章 多线程与多进程编程\code>python SecondExample.py

15 16 17 18 19

5 6 7 8 9

True

True