python 购物流程脚本

8767654r

Python购物流程脚本

#!/usr/bin/env python
import sys

userfile = open(r'user.txt').readlines()
listpass = [i.strip('\n') for i in userfile]

username1 = listpass[0::2]
password1 = listpass[1::2]

while True:
        user = raw_input("please input your username:")
        user_num = username1.index(user)
        user_pas = password1[user_num]

        if len(user) == 0:
                print "empty user,try again."
                continue
        elif user in username1:
                break
        elif user == "q" or user == "quit" or user == "exit":
                print "Welcome to come again next time"
                sys.exit()
        else:
                print "%s is not exists,please try again input your name" %(user)
                continue

while True:
        passwdd = raw_input("please your password:")
        if len(passwdd) == 0:
                print "Sorry , input your password error , please try again."
        elif passwdd == user_pas:
                print "\n" + "Welcome to %s login shoppings:" %(user)
                break
        else:
                print "password is Error,please try again."

while True:
        try:
                salary = int(raw_input("please input your salary:"))
                break
        except ValueError:
                print "please input a number,not string."

file = open('shoplist.txt','r')
for fr in file:
        fr = fr.rstrip()
        print fr
file.close()

print """Options and arguments:
         input "D" : Delete from shoplist into del
         input "F" : Return to the total pages
         input "T" : Total shoplist"""

products = []
prices   = []

file2 = open('shoplist.txt')
fr2 = file2.readlines()

for line in fr2:
        p1 = line.split()[0]
        p2 = int(line.split()[1])
        products.append(p1)
        prices.append(p2)
        prices = prices

list00 = []
while True:
        choose = raw_input("please choose your buy things:")
        if choose in products:
                product_num = products.index(choose)
                product_price = prices[product_num]
                if salary > product_price:
                        print "%s $%d" %(choose,product_price)
                        list00.append(choose)
                        print "Add %s into your shoplist" %(choose)
                        print "You choose to purchase the commodity list:",list00
                        salary = salary - product_price
                else:
                        if salary < min(prices):
                                print "Sorry , reset of your salary cannot buy anythings."
                                sys.exit()
        elif choose == "T":
                print "salary left :$%s" %(salary)
                print "You choose to purchase the commodity list:",list00
                sys.exit()
        elif choose == "D":
                while True:
                        delchoose = raw_input("your will things remove from into shoplist:")
                        if delchoose in products:
                                product_num2 = products.index(delchoose)
                                product_price2 = prices[product_num2]
                                salary = salary + product_price2
                                list00.remove(delchoose)
                                print list00
                                print salary
                                break


二、脚本测试
[iyunv@python 20141105]# python list.py
please input your username:allentuns    #输入错误的用户名，则登陆失败
allentuns is not exists,please try again input your name
please input your username:ad
ad is not exists,please try again input your name
please input your username:admin    #输入正确的用户名后，可以继续输入密码
please your password:000            #密码输入错误后，尝试继续在次输入
password is Error,please try again.   
please your password:a
password is Error,please try again.
please your password:000000        #密码输入正确后，可以继续下一步操作

Welcome to admin login shoppings:
please input your salary:20000    #输入工资，打印购物列表
Apple   13500
Iphone     4500
Bike    490
Samsung 2900
Piano   1600
Coffer  35
Options and arguments:
         input "D" : Delete from shoplist into del
         input "F" : Return to the total pages
         input "T" : Total shoplist
please choose your buy things:Apple    #选择想要购买的物品1，并加入到购物车
Apple $13500
Add Apple into your shoplist
You choose to purchase the commodity list: ['Apple']    #已经成功加入到购物车
please choose your buy things:Bike     #选择想要购买的物品2，并加入到购物车
Bike $490
Add Bike into your shoplist
You choose to purchase the commodity list: ['Apple', 'Bike']    #已经成功加入到购物车
please choose your buy things:Coffer    #选择想要购买的物品3，并加入到购物车
Coffer $35
Add Coffer into your shoplist
You choose to purchase the commodity list: ['Apple', 'Bike', 'Coffer']
please choose your buy things:D    #如果此时感觉不想买Bike了，可以从购物车将其删除
your will things remove from into shoplist:Bike    #删除购物车的物品
['Apple', 'Coffer']
6465
please choose your buy things:T    #要购买的物品已经购买完毕，此时可以结账，退出系统
salary left :$6465
You choose to purchase the commodity list: ['Apple', 'Coffer']    #打印购买的物品
三、登陆认证用户文件和购物列表文件

[iyunv@python 20141105]# cat user.txt     #认证用户和密码列表
jerry
123456
Kimits
873902
admin
000000
[iyunv@python 20141105]# cat shoplist.txt  #购物列表单
Apple   13500
Iphone     4500
Bike    490
Samsung 2900
Piano   1600
Coffer  35