代码如下:
from operator import add notice='''\ welcome to my shopping car 1 iphone 5800 2 book 100 3 bike 200 4 iphone8 8000\ ''' amount=raw_input('You amount in credict card') items=[5800,100,200,8000] name={'1':'iphone','2':'book','3':'bike','4':'iphone8'} sum1=[0] named=[] print notice while True: choice=raw_input(">>>") if choice.isdigit(): if ((reduce(add,sum1)+items[int(choice)-1])<int(amount)): sum1.append(items[int(choice)-1]) named.append(name[choice]) print 'added [', name[choice], '] to your shopping' else: print 'please try another one' if choice=='q': print'=====================================' print 'goods price' for i in range(1,len(sum1)): print named[i-1],' ',sum1[i] print 'sum:',reduce(add,sum1) print 'balance',int(amount)-reduce(add,sum1)