如何在 python 中退出线程

Question

Hi guy I am writing a socket programming in python and using multithreading but I have one problem when I want to exit a program It seem like I can not exit a running thread.

picture of my code

def create_workers():
for _ in range(NUMBER_OF_THREADS):
    t = threading.Thread(target=work)
    t.daemon = True  # End the Thread
    t.start()



def work():
    while True:

        x = queue.get()
        if x == 1:
            create_socket()
            bind_socket()
            accept_connections()
        if x == 2:
            start_turtle()
            break

        queue.task_done()

the function create_workers are running two thread and targeting function work but I don't really know to terminate it after I break a while loop in function work

Answer 1

Use a threading.Event instance as a flag that you set just before work ends, and check if it is set at the start of each iteration of the infinite loop.

If your work function is more complicated, with multiple return statements, you could chuck the event.set() call into the finally block of a try statement.

threading.Event is thread-safe.

As pointed out by user2357112 supports Monica , making the threads daemonic doesn't make sense, so I've removed that line.

def create_workers():
    event = threading.Event()
    for _ in range(NUMBER_OF_THREADS):
        t = threading.Thread(target=work, args=(event,))
        t.start()

def work(event):
    while True:
        if event.is_set():
            return
        
        x = queue.get()
        if x == 1:
            create_socket()
            bind_socket()
            accept_connections()
        if x == 2:
            start_turtle()
            break
        
        queue.task_done()
    
    event.set()

Answer 2

you can use python-worker ( link )

from worker import abort_all_thread

## your running code

abort_all_thread() # this will kill any active threads