Do you _need_ to call threading.Thread.join() to clean-up threads on python if they exit cleanly?

abandon-threads.py

#!/usr/bin/env python3
"""Do you _need_ to call threading.Thread.join() to clean-up threads on python if they exit cleanly?
"""

import threading
import time

def do_a_thing(idx):
    print(f"starting {idx}")
    time.sleep(1)
    print(f"stopping {idx}")
    time.sleep(1)

if __name__ == '__main__':

    workers = []
    for i in range(100000):
        t = threading.Thread(target=do_a_thing, args=(i,))
        workers.append(t)
        t.start()

    print(f"t=0 Threads {threading.active_count()} ->{threading.enumerate()}")
    time.sleep(3)
    print(f"t=3 Threads {threading.active_count()} ->{threading.enumerate()}")
    
    [t.join() for t in workers]
    print(f"t=final Threads {threading.active_count()} ->{threading.enumerate()}")
    

stdout.txt

starting 0
starting 1
starting 2
starting 3
starting 4
starting 5
starting 6
starting 7
starting 8
starting 9
t=0 Threads 11 ->[<_MainThread(MainThread, started 140324786026304)>, <Thread(Thread-1, started 140324780418816)>, <Thread(Thread-2, started 140324701730560)>, <Thread(Thread-3, started 140324693337856)>, <Thread(Thread-4, started 140324684945152)>, <Thread(Thread-5, started 140324676552448)>, <Thread(Thread-6, started 140324668159744)>, <Thread(Thread-7, started 140324659767040)>, <Thread(Thread-8, started 140324651374336)>, <Thread(Thread-9, started 140324164859648)>, <Thread(Thread-10, started 140324156466944)>]
stopping 7
stopping 4
stopping 1
stopping 2
stopping 3
stopping 0
stopping 6
stopping 5
stopping 9
stopping 8
t=3 Threads 1 ->[<_MainThread(MainThread, started 140324786026304)>]
t=final Threads 1 ->[<_MainThread(MainThread, started 140324786026304)>]