list-购物程序

#!/usr/bin/env python
import sys
salary=int(raw_input('Please input your salary:'))
products=[['Iphone',5800],['MacPro',12000],['NB Shoes',680],['Cigrate',48],['MX4',2500]]
#create a shopping list
shopping_list=[]

while True:
  for p in products:
    print products.index(p), p[0],p[1]
  choice = raw_input("\033[32;1mPlease choose sth to buy:\033[0m").strip()

  if choice == 'quit':
    print "You have bought below stuff:"
    for i in shopping_list:
      print '\t',i
    sys.exit('Goodbye!')

  if len(choice) == 0:continue

  if not choice.isdigit():continue

  choice = int(choice)
  if choice >= len(products): #out of range
    print '\033[31;1mCould not find this item\033[0m'
    continue
  pro =  products[choice]
  if salary >=  pro[1]: #means you can afford this
    salary=salary - pro[1]
    shopping_list.append(pro)
    print "\033[34;1mAdding %s to shopping list,you have %s left\033[0m" %(pro[0],salary)
  else:
    print 'The price of %s is %s,yet your current balance is %s,so try another one!'%(pro[0],pro[1],salary)

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