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import threading
import time
lock = 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("====>釋放主進(jìn)程鎖")
lock.release()
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