a simple threaded counter implemented in pythobn

simple_threaded_counter.py

from logging import basicConfig, DEBUG, debug
from threading import Lock, Thread, current_thread, enumerate
from time import sleep
from random import random

basicConfig(level=DEBUG, format='[%(thread)d: %(message)s]')

            
class Counter(object):
    def __init__(self, start=0):
        self.lock = Lock()
        self.value = start
            
    def increment(self):
        debug('Waiting for lock')
        self.lock.acquire()
        try:
            debug('Acquired lock')
            self.value += 1
        finally:
            self.lock.release()

def worker(c, _):
    for i in range(2):
        pause = random()
        debug('Sleeping %0.02f', pause)
        sleep(pause)
        c.increment()
    debug('Done')

counter = Counter()
for i in range(2):
    t = Thread(target=worker, args=(counter, i))
    t.start()

debug('Waiting for worker threads')
main_thread = current_thread()
for t in enumerate():
    if t is not main_thread:
        t.join()
debug('Counter: %d', counter.value)