The module faulthandler allows registering a handler that will | Python etc

The module faulthandler allows registering a handler that will dump the current stack trace in a specific file (stderr by default) upon receiving a specific signal or every N seconds.

For example, dump stack trace every 2 seconds:

import faulthandler
from time import sleep

faulthandler.dump_traceback_later(
timeout=2,
repeat=True,
)
for i in range(5):
print(f"iteration {i}")
sleep(1)

Output:

iteration 0
iteration 1
Timeout (0:00:02)!
Thread 0x00007f8289147740 (most recent call first):
File "tmp.py", line 10 in
iteration 2
iteration 3
Timeout (0:00:02)!
Thread 0x00007f8289147740 (most recent call first):
File "tmp.py", line 10 in
iteration 4