【吴师傅的Python面包店】Day 2

"""不想让客户等待抱怨，python面包师傅只好提前准备好面包。"""

import time

def preproduce():
    """提前准备好的面包。"""
    return 10

def producer():
    """生产面包。"""
    time.sleep(1)
    return 1

def consumer():
    """消费者，买到面包总要说点什么吧。"""
    print("I am so happy.")

def run():
    total = 0
    stock = preproduce()
    while True:
        if stock:
            # 还有库存，先把库存面包卖了
            consumer()
            stock -= 1
        else:
            num = producer()
            if num:
                consumer()
            total += num
            if total >= 10:
                # 师傅做了10个面包就要下班了。
                print('Finished.')
                break

if __name__ == "__main__":
    run()