how to make a thread-safe global counter in python

Question

I\'m creating a threading.Timer(2,work) run threads. Inside each work function, upon some condition the global counter must increment without conflict for acces

Answer 1

Not sure if you have tried this specific syntax already, but for me this has always worked well:

Define a global lock:

import threading
threadLock = threading.Lock()

and then you have to acquire and release the lock every time you increase your counter in your individual threads:

with threadLock:
    global_counter += 1