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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def initialize(manager, initials=15):
 """ Simple progress bar example """


    # Simulated preparation
    pbar = manager.counter(total=initials, desc='Initializing:', unit='initials')
    for num in range(initials):  # pylint: disable=unused-variable
        time.sleep(random.uniform(0.1, 0.5))  # Random processing time
        pbar.update()
    pbar.close()