Python binary semaphore VS lock
It can be said that Semaphore is an advanced version of Lock. Semaphore has a custom number to control multiple threads to access resources. But there is only one with Lock.
threading.Semaphore() uses a threading.Lock() object internally as a monitor. When Semaphore.acquire() is called, the semaphore object calls acquire on its Lock object, decrements its value, and releases the lock.
From this it follows that a binary Semaphore is really just a wrapper around a Lock. I cannot think of any functional difference between the two, except that with Semaphore you can pass the optional verbose = True parameter for debugging purposes, and have the option to call acquire with blocking = False.