Is the += operator thread-safe in Python?

Question

I want to create a non-thread-safe chunk of code for experimentation, and those are the functions that 2 threads are going to call.

c = 0

def increment():
          


        

Answer 1

If you actually want to make your code not thread-safe, and have good chance of "bad" stuff actually happening without you trying like ten thousand times (or one time when you real don't want "bad" stuff to happen), you can 'jitter' your code with explicit sleeps:

def íncrement():
    global c
    x = c
    from time import sleep
    sleep(0.1)
    c = x + 1