lesson03_enumerate_threads.py

# SuperFastPython.com
# example of getting a list of active threads
from time import sleep
from threading import Thread
import threading

# custom function to be executed in a new thread
def task():
 # block for a moment
 sleep(1)

# protect the entry point
if __name__ == '__main__':
 # create a number of new threads
 threads = [Thread(target=task) for _ in range(5)]
 # start the new threads
 for thread in threads:
 thread.start()
 # get a list of all running threads
 running_threads = threading.enumerate()
 # report a count of active threads
 print(f'Active Threads: {len(running_threads)}')
 # report each in turn
 for thread in running_threads:
 print(thread)