Check if thread is dead in Python

demo.py

import threading
import time


def doom():
    raise RuntimeError()


def zoom():
    while True:
        time.sleep(1)


doomed = threading.Thread(target=doom, name="doomed")
doomed.start()

zoomed = threading.Thread(target=zoom, name="zoomed")
zoomed.start()

time.sleep(1)

print(f"Is {doomed.name} alive? {doomed.is_alive()}")
print(f"Is {zoomed.name} alive? {zoomed.is_alive()}")