Day 6 Python基本数据类型——作业

教程：Python开发【第三篇】：Python基本数据类型

 

一、元素分类

有如下值集合 [11,22,33,44,55,66,77,88,99,90]，将所有大于 66 的值保存至字典的第一个key中，将小于 66 的值保存至第二个key的值中。
即： {'k1': 大于66的所有值, 'k2': 小于66的所有值}

li = [11,22,33,44,55,66,77,88,99,90]

dic = {
    "k1" : [],
    "k2" : []
}

for i in li:
    if i >= 66:
        dic["k1"].append(i)
    else:
        dic["k2"].append(i)

print(dic)

 

二、查找

查找列表中元素，移除每个元素的空格，并查找以 a或A开头 并且以 c 结尾的所有元素。

    li = ["alec", " aric", "Alex", "Tony", "rain"]

    tu = ("alec", " aric", "Alex", "Tony", "rain") 

    dic = {'k1': "alex", 'k2': ' aric',  "k3": "Alex", "k4": "Tony"}

li = ["alec", " aric", "Alex", "Tony", "rain"]
tu = ("alec", " aric", "Alex", "Tony", "rain")
dic = {'k1': "alex", 'k2': ' aric', "k3": "Alex", "k4": "Tony"}

for i in li:
   if i.strip().capitalize().startswith('A') and i.strip().endswith('c'):
       print(i.strip())

for i in tu:
    if i.strip().capitalize().startswith('A') and i.strip().endswith('c'):
        print(i.strip())

for i in dic:
    if dic[i].strip().capitalize().startswith('A') and dic[i].strip().endswith('c'):
        print(dic[i].strip())

 

三、输出商品列表，用户输入序号，显示用户选中的商品

    商品 li = ["Mobile Phone", "Computer", "Mouse", "Laptop"]

#!/usr/bin/python
# -*- coding: utf-8 -*-

li = ["Mobile Phone", "Computer", "Mouse", "Laptop"]

for k,i in enumerate(li,1):
    print(k,i)

num = input('请输入序号：')-1
print(li[num])

 

四、购物车

功能要求：

• 要求用户输入总资产，例如：2000
• 显示商品列表，让用户根据序号选择商品，加入购物车
• 购买，如果商品总额大于总资产，提示账户余额不足，否则，购买成功。
• 附加：可充值、某商品移除购物车

goods = [
    {"name": "电脑", "price": 1999},
    {"name": "鼠标垫", "price": 10},
    {"name": "鼠标", "price": 20},
    {"name": "游艇", "price": 998},
]

 

#!/usr/bin/python
# -*- coding: utf-8 -*-

money = int(input("请输入总金额："))

sum = 0
choose = 1
li = []
while choose != 4:
    print("请选择1、添加商品到购物车； 2、查看购物车；3、充值；4、结账")
    choose = int(input())
    if choose == 1 :
        goods = [
            {"name": "电脑", "price": 1999},
            {"name": "鼠标垫", "price": 10},
            {"name": "鼠标", "price": 20},
            {"name": "游艇", "price": 998},
        ]
        for k,i in enumerate(goods,1):
            print(k,i["name"],i["price"])
        cart = int(input("请选择要添加的商品序号：")) -1
        sum += goods[cart]["price"]
        li.append(goods[cart])

    elif choose == 2 :
        for k, i in enumerate(li, 1):
            print(k, i["name"], i["price"])
        print("总额为：", sum, "元")
        print("余额为：", money, "元")
        print("请选择是否移除商品：1、是；2、否：")
        remove = int(input())
        if remove == 1:
            cart = int(input("请选择要移除的商品序号：")) - 1
            sum -= li[cart]["price"]
            li.remove(li[cart])

    elif choose == 3 :
        print("现有总金额为：", money, "元")
        add = int(input("请输入充值金额："))
        money += add

if sum <= money:
    balance = money - sum
    print("购买成功，余额为", balance, "元")
else:
    balance = sum - money
    print("余额不足，差额为", balance, "元")