dilllock.py

import threading

import dill


def main():
    lock = threading.RLock()
    dill_lock = dill.loads(dill.dumps(lock))

    print(dill_lock)  # Prints as "unlocked"
    dill_lock.acquire()  # Blocks forever
    print("If I was brave enough I would call rm -rf / here.")


if __name__ == "__main__":
    main()