Python 練習：簡單的購物車(二)

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最佳化了上一個購物車程式：http://www.cnblogs.com/klvchen/p/8577269.html

#輸入工資
salary = input("Please input your salary: ")

#判斷工資是否為整數if salary.isdigit():    salary = int(salary)else:    exit("you must input digit")

#定義購物車cart = []#商品資訊msg = [["iphone6s", 5800], ["mac book", 9000], ["coffee", 32], ["bicycle", 1500]]while True:
　　#展示商品資訊    for k, v in enumerate(msg, 1):        print("%s 商品名稱: %s, 價格: %d" % (k, v[0], v[1]))    choice = input("Please select the product number you need to purchase ! [q] to exit")
　　#退出    if choice == ‘q‘:        print("========== You have buy ==========")        for l in cart:            print(l)        exit()
　　#選擇商品    if choice.isdigit():        choice = int(choice)        if 0 < choice <= len(msg):
　　　　　　　#判斷餘額是否充足            if salary >= msg[choice-1][1]:                salary -= msg[choice-1][1]                print("You have buy %s, money has %d" %(msg[choice-1][0], salary))                cart.append(msg[choice-1][0])            else:                print("You don‘t you enough money! money has %d" %salary )        else:            print("Please select right product number!")    else:        print("Please select right options")

運行結果如下：

程式還有很多可以最佳化的地方，以後有空再琢磨~

Python 練習：簡單的購物車(二)