threading_enumerate.py

#!/usr/bin/env python

# this is from The Python
# Standard Library by example
# ISBN13: 9780321767349
# This program didn't work on my system
# and illuminated a bug in logging.
import random
import threading
import time
import logging

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


def worker():
    """thread worker function"""
    t = threading.currentThread()  # pyflakes complains here. local
    # variable 't' is assigned but never used.
    pause = random.randint(1, 5)
    logging.debug('sleeping %s', pause)
    time.sleep(pause)
    logging.debug('ending')
    return

for i in range(3):
    t = threading.Thread(target=worker)
    t.setDaemon(True)
    t.start()

main_thread = threading.currentThread()
for t in threading.enumerate():
    if t is main_thread:
        continue
    logging.debug('joining %s', t.getName())
    t.join()