概要
按理说,我们入门的第一个小程序都应该是Hello World。因为比较简单,我这也就不做过多的演示 了。
下面是我写的一个小程序。主要用于练习Python的基本语法,以及入门。
主要实现功能
- 要求用户输入自己预期消费额度.
- 展示现有商品信息,要求用户选择
- 用户选择对应商品标号后(注意判断是否超出预期消费额度等操作),保存到购物车
- 用户退出后显示购物车信息以及剩余额度情况
代码:
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#!/usr/bin/env python
# -*- coding: utf-8 -*-
"""
@author: 烽火
@license: Apache Licence
@file: shopping.py
@time: 6/16/17 10:05 AM
"""
goods = [
( "IPhone" , 5800 ),
( "Watch" , 2000 ),
( "MacBook" , 12000 )]
goods_cart = []
mybudget = input ( "请输入您的预算:" )
# 不考虑是小数的情况
while not mybudget.isdigit():
mybudget = input ( "输入有误,请重新输入您的预算:" )
mybudget = int (mybudget);
while True :
print ( "商品列表" .center( 50 , "-" ))
print ( "编号" .center( 8 , " " ), "名称" .ljust( 30 , " " ), "价格" .ljust( 10 , " " ))
for i in enumerate (goods):
print ( str (i[ 0 ]).center( 10 , " " ), str (i[ 1 ][ 0 ]).ljust( 31 , " " ), str (i[ 1 ][ 1 ]).ljust( 10 , " " ))
user_choose = input ( "请输入您的选择:" )
if user_choose.isdigit():
user_choose = int (user_choose)
if user_choose > = 0 and user_choose < len (goods):
if (mybudget - goods[user_choose][ 1 ]) > = 0 :
goods_cart.append(goods[user_choose])
mybudget - = goods[user_choose][ 1 ]
print ( "预算还有%d" % mybudget)
else :
print ( "预算不够啦~" )
else :
print ( "不存在该商品~" )
elif user_choose = = 'q' :
break
else :
print ( "您的输入有误~" )
print ( "预算还剩%d了" % (mybudget))
print ( "购物车商品信息" .center( 50 , "-" ))
for i in enumerate (goods_cart):
print ( str (i[ 0 ]).center( 10 , " " ), str (i[ 1 ][ 0 ]).ljust( 31 , " " ), str (i[ 1 ][ 1 ]).ljust( 10 , " " ))
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运行结果
以上就是本文的全部内容,希望对大家的学习有所帮助,也希望大家多多支持服务器之家。
原文链接:https://blog.csdn.net/w695050167/article/details/73331811