threading.Event

https://www.jb51.net/article/185879.htm

import threading
import time
import logging

logging.basicConfig(level=logging.DEBUG, format='(%(threadName)-10s) %(message)s', )


def worker(event):
    while not event.is_set():
        logging.debug('Waiting for redis ready...')
        event.wait(1)
    logging.debug('redis ready, and connect to redis server and do some work [%s]', time.ctime())
    time.sleep(1)


readis_ready = threading.Event()
t1 = threading.Thread(target=worker, args=(readis_ready,), name='t1')
t1.start()

t2 = threading.Thread(target=worker, args=(readis_ready,), name='t2')
t2.start()

logging.debug('first of all, check redis server, make sure it is OK, and then trigger the redis ready event')
time.sleep(3)  # simulate the check progress

logging.info(time.ctime())
readis_ready.set()