def get_sleepiest_guard(sleep_record):
    """Finds guard in sleep_record who spent the most total minutes asleep.

    returns: ('guard', total_minutes_slept)
    """
    sleepiest = '', 0
    for guard in sleep_record:
        sleep_mins = 0
        for minute in sleep_record[guard]:
            sleep_mins += sleep_record[guard][minute]
        if sleep_mins > sleepiest[1]:
            sleepiest = guard, sleep_mins
            print(sleepiest)
    return sleepiest