race.py

from threading import Thread, get_ident
import time

# ThreadingEnabled = False
ThreadingEnabled = True


def main():
    class DummyObj:
        def __init__(self):
            self._loaded = False

        def setup(self):
            if not self._loaded:
                print(f"setting up from thread {get_ident()}")
                time.sleep(3)
                print(f"finished setting up from thread {get_ident()}")
                self._loaded = True
            else:
                print("Already set up", get_ident())

    dummy_obj = DummyObj()

    if ThreadingEnabled:
        thread = Thread(target=dummy_obj.setup)
        thread.start()
    else:
        dummy_obj.setup()

    dummy_obj.setup()


if __name__ == '__main__':
    main()