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module_11_multitasking/materials/lock/threading_synchronization_problem.py
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24 окт 2025, 20:55
24 окт 2025, 20:55
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import logging import random import threading import time logging.basicConfig(level=logging.INFO) logger: logging.Logger = logging.getLogger(__name__) COUNTER: int = 1 def worker_one() -> None: global COUNTER while COUNTER < 1000: COUNTER += 1 logger.info(f'Worker one incremented counter to {COUNTER}') sleep_time: int = random.randint(0, 1) time.sleep(sleep_time) def worker_two() -> None: global COUNTER while COUNTER > -1000: COUNTER -= 1 logger.info(f'Worker two decremented counter to {COUNTER}') sleep_time: int = random.randint(0, 1) time.sleep(sleep_time) def main() -> None: start: float = time.time() thread_1 = threading.Thread(target=worker_one) thread_2 = threading.Thread(target=worker_two) thread_1.start() thread_2.start() thread_1.join() thread_2.join() logger.info('Execution time {:.4}'.format(time.time() - start)) if __name__ == '__main__': main()