python-列表练习程序ver2

列表练习

1、让用户输入工资

2、输出购物菜单及产品价格

3、计算用户是否可支付

4、输出用户剩余的钱，问用户是否继续购物，如果选择继续，继续进行，只到钱不够为止

5、如若不够，提示用户剩余工资不够购买，并推出程序

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1、在程序中定义列表

root@kali:~/python# cat listshopingver3.py 
#!/usr/bin/python
# --*-- coding:utf-8 --*--


products = ['Car','Iphone','Coffee','Mac','Cloths','Bicyle']
prices = [250000,4999,35,9688,438,1500]
shop_list = []
salary = int(raw_input('please input your salary:'))
while True:
print 'Thing have in the shop,please choose one to buy:'
for p in products:
#product_index = products.index(p)#产品的索引编号
print p,'\t',prices[products.index(p)]#使用产品的索引编号对应价格


choice = raw_input('Please input one item to buy:')
F_choice = choice.strip()#去掉单词中所有的空格
if F_choice in products:
product_price_index = products.index(F_choice)#产品的索引编号
product_price = prices[product_price_index]#使用产品的索引编号对应价格
print F_choice,product_price
if salary > product_price:#工资大于表示可以购买
shop_list.append(F_choice)#表示购买产品，并加入列表
print 'Added %s into your shop list'% F_choice
salary = salary - product_price#扣钱，变成新的工资
print 'Salary left:',salary#剩余工资
else:
if salary < min(prices):#min是内置函数，自动搜索列表prices的最小值
print 'Sorry,rest of your salary cannot buy anything!! bye!'
print 'you have bought these things : %s ' % shop_list
exit()
root@kali:~/python#

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2、读取本目录下文件进行

root@kali:~/python# vim listshoppingver4.py
root@kali:~/python# ls
contact_list.txt      fileinputreadfile.py  listshopingver3.py   oldtext.txt       tab.pyc
contact_list.txt.bak  fileseekblank.py      listshopping.py      scan1.py          test.py
csvt01                fileseek.py           listshoppingver4.py  scanhostport.py   test.txt
csvtpy                fileseekstart.py      manage_query.py      shoppinglist.txt  userinput.py
fileinputbak.py       listshopingver2.py    newtext.txt          tab.py            xwbtest.txt
root@kali:~/python# cat listshoppingver4.py 
#!/usr/bin/python
# --*-- coding:utf-8 --*--


f = file('shoppinglist.txt')
products = []
prices = []
for line in f.readlines():#把shoppinglist.txt每行循环读取出
new_line = line.split()#字符分割split必须赋值给变量才可以
products.append(new_line[0])#把shoppinglist.txt每行分割的第一列元素读取出，并存储到products列表中
prices.append(new_line[1])#把shoppinglist.txt每行分割的第二列元素读取出，并存储到products列表中
print products
print prices
root@kali:~/python#