join() method of thread

join.py

import threading
import logging
from time import sleep


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


def thread01():
    logging.debug('Starting')
    sleep(5)
    logging.debug('Exiting')
    
    
def thread02(t=None):
    logging.debug('Starting')
    if t is not None:
        logging.debug('Waiting for %s', t)
        t.join()
    logging.debug('Exiting')


t1 = threading.Thread(name='thread01', target=thread01)
t2 = threading.Thread(name='thread02', target=thread02, kwargs={'t': t1})

t1.start()
t2.start()

inspired by multithreading - what is the use of join() in python threading - Stack Overflow