Python:线程仍在运行

Question

如何查看线程是否已完成？我尝试了以下内容,但threads_list不包含已启动的线程,即使我知道该线程仍在运行.

import thread
import threading

id1 = thread.start_new_thread(my_function, ())
#wait some time
threads_list = threading.enumerate()
# Want to know if my_function() that was called by thread id1 has returned 

def my_function()
    #do stuff
    return

Answer 1

关键是使用线程启动线程,而不是线程:

t1 = threading.Thread(target=my_function, args=())
t1.start()

然后用

z = t1.isAlive()

要么

l = threading.enumerate()

您还可以使用join():

t1 = threading.Thread(target=my_function, args=())
t1.start()
t1.join()
# Will only get to here once t1 has returned.