threading Rlock 多线程代码

import threadingimport timelock = threading.RLock()print(lock.acquire())def sub(l): print('{}: {}'.format(threading.current_thread(), l.acquire())) print('{}: {}'.format(threading.current_thread(), l.acquire(False))) print('lock in sub thead {}'.format(lock)) l.release() print('sub 1') l.release() print('sub 2')threading.Timer(2, sub, args=(lock, )).start()print('-------------')print(lock.acquire())lock.release()time.sleep(5)print("====>释放主进程锁")lock.release()