Home Backend Development Python Tutorial Simple example sharing of implementing shopping cart in Python

Simple example sharing of implementing shopping cart in Python

Aug 08, 2017 am 11:32 AM
python Example shopping cart

下面小编就为大家带来一篇Python初学时购物车程序练习实例(推荐)。小编觉得挺不错的,现在就分享给大家,也给大家做个参考。一起跟随小编过来看看吧

废话不多说,直接上代码


#Author:Lancy Wu

product_list=[
 ('Iphone',5800),
 ('Mac Pro',9800),
 ('Bike', 800),
 ('Watch', 10600),
 ('Coffee', 31),
 ('Lancy Python', 120)
] #商品列表
shopping_list=[] #定义一个列表来存储已购商品
salary=input("请输入工资:")
if salary.isdigit(): #当输入的内容为数字
 salary=int(salary) #将输入的工资转换成int类型
 while True:
  #循环打印出所有商品列表,有两种写法,一般用下面一种
  # for item in product_list:
  #  print(product_list.index(item),item)
  for index,item in enumerate(product_list): #enumerate()这个方法是取出列表下标
   print(index,item)
  user_choice=input("是否购买商品?如果要购买商品请输入商品编号:")
  if user_choice.isdigit(): #当输入的商品编号为数字
   user_choice=int(user_choice) #将输入的商品编号转换成int类型
   if user_choice<len(product_list) and user_choice>=0: #判断输入的商品编号是否存在
    p_item=product_list[user_choice] #根据商品下标取出所购买的商品
    if p_item[1]<=salary: #当商品的价格小于等于余额
     shopping_list.append(p_item) #将购买的商品存储到shopping_list[]列表中
     salary-=p_item[1]    #计算余额
     print("您购买的商品为%s,余额为\033[31;1m%s\033[0m"%(p_item,salary)) #这个地方做了一下处理,将余额高亮显示
    else: #当商品的价格大于余额
     print("\033[41;1m你的余额只剩[%s]\033[0m"%salary) #这个地方做了一下处理,将余额高亮显示
   else:
     print("该商品不存在!")
  elif user_choice==&#39;q&#39;: #当输入的商品编号为q时,打印购买的商品和余额并退出程序
   print("--------以下是购买的商品--------")
   for p in shopping_list:
    print(p)
   print("您的余额为:",salary)
   exit()
  else:
   print("该商品不存在!")
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