python 程序如何防止生成的EXE重復執行？

用lock 示例代碼（網上搜的）

from threading import Thread, Lock

mutex = Lock()def processData(data):

mutex.acquire() try: print('Do some stuff') finally:

mutex.release()while True:

t = Thread(target = processData, args = (some_data,))

t.start()