sync_prod.py

import datetime
import random
import time

import colorama


def main():
    t0 = datetime.datetime.now()
    print(colorama.Fore.WHITE + 'App started.', flush=True)
    data = []

    generate_data(20, data)
    generate_data(20, data)
    process_data(40, data)

    dt = datetime.datetime.now() - t0
    print(colorama.Fore.WHITE + f'App exiting, total time: {dt.total_seconds():,.2f} sec.', flush=True)


def generate_data(num: int, data: list):
    for idx in range(1, num + 1):
        item = idx * idx
        data.append((item, datetime.datetime.now()))

        print(colorama.Fore.YELLOW + f' -- generated item {idx}', flush=True)
        time.sleep(random.random() + 0.5)


def process_data(num: int, data: list):
    processed = 0
    while processed < num:
        item = data.pop(0)
        if not item:
            time.sleep(0.01)
            continue

        processed += 1
        value = item[0]
        t = item[1]
        dt = datetime.datetime.now() - t

        print(colorama.Fore.CYAN + f' +++ Processed value {value} after {dt.total_seconds():,.2f} sec.', flush=True)
        time.sleep(0.5)


if __name__ == '__main__':
    main()