Dump the stack traces of all executing Python threads when the Python Process receives the `usr1` signal.

thread_dumper.py

import signal
import sys
import traceback

def sigterm_handler(signal, frame):
    # save the state here or do whatever you want
    for thread_id, frame in sys._current_frames().items():
        logger.info(f"Stack for thread {thread_id}")
        traceback.print_stack(frame, file=sys.stdout)
        logger.info("")

signal.signal(signal.SIGUSR1, sigterm_handler)

Example:

kill -usr1 $PID