Semaphores on Python

Question

I\'ve started programming in Python a few weeks ago and was trying to use Semaphores to synchronize two simple threads, for learning purposes. Here is what I\'ve got:

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Answer 1

Also, you can use Lock/mutex method as following:

import threading
import time

mutex = threading.Lock()  # is equal to threading.Semaphore(1)

def fun1():
    while True:
        mutex.acquire()
        print(1)
        mutex.release()
        time.sleep(.5)

def fun2():
    while True:
        mutex.acquire()
        print(2)
        mutex.release()
        time.sleep(.5)

t1 = threading.Thread(target=fun1).start()
t2 = threading.Thread(target=fun2).start()

Another/Simpler style usage through "with":

import threading
import time

mutex = threading.Lock()  # is equal to threading.Semaphore(1)

def fun1():
    while True:
        with mutex:
            print(1)
        time.sleep(.5)

def fun2():
    while True:
        with mutex:
            print(2)
        time.sleep(.5)

t1 = threading.Thread(target=fun1).start()
t2 = threading.Thread(target=fun2).start()

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[NOTE]:

The difference between mutex, semaphore, and lock