1 #__author:"_nbloser" 2 #date: 2017/11/22 3 4 salary = input("请输入你的工资:") 5 if salary.isdigit() != True: 6 print("你玩野！自动退出") 7 exit("你必须输入数字") 8 else: 9 salary = int(salary) 10 shopping_cart = [] 11 12 balance = salary 13 while(True): 14 goods = ["iphone6s","mac book","coffee","python book","bicydle"] 15 price = [5800,9000,32,80,1500] 16 17 for i in range(5): 18 print(i+1,goods[i],price[i]) 19 num = input("请输入输入你要买的东西的号码：") 20 21 if num.isdigit()!=True: 22 print("你玩野！自动退出") 23 exit("你必须输入数字") 24 else: 25 num = int(num) 26 if num>len(goods): 27 break 28 balance = balance - price[num-1] 29 if balance>0: 30 print("已加入",goods[num-1],"到你的购物车，当前余额：",balance) 31 shopping_cart.append(goods[num-1]) 32 shopping_cart.append(price[num-1]) 33 else: 34 print("余额不足，",balance,",请重新选择") 35 balance += price[num-1] 36 37 print("你已购买以下商品：") 38 for x in shopping_cart: 39 print(x,end=" ") 40 if 0!=shopping_cart.index(x)%2: 41 print() 42 43 print("你的余额为：",balance) 44 print("欢迎下次光临！")
使用嵌套goods=[["iphone6s",5800],["macbook",9000],["coffee",32],["pythonbook",80],["bicycle",1500]] 里面使用元组更好
#列表长度
len（goods）
#判断int类型
ifnum.isdigit()!=True:
#enumerate
for k,i in enumerate(goods,1):
print(k,end="")
forjinrange(len(i)):
exit("你必须输入数字")
1 #__author:"_nbloser" 2 #date: 2017/11/22 3 4 salary = input("请输入你的工资:") 5 if salary.isdigit() != True: 6 print("你玩野！自动退出") 7 exit("你必须输入数字") 8 else: 9 salary = int(salary) 10 shopping_cart = [] 11 12 balance = salary 13 while(True): 14 goods = [("iphone6s",5800), ("mac book",9000), ("coffee",32), ("python book",80), ("bicycle",1500)] 15 16 for k,i in enumerate(goods,1): 17 print(k,end=" ") 18 for j in range(len(i)): 19 print(i[j], end=" ") 20 print() #enumerate(goods,1) 21 num = input("请输入输入你要买的东西的号码：") 22 23 if num.isdigit()!=True: 24 print("你玩野！自动退出") 25 exit("你必须输入数字") 26 else: 27 num = int(num) 28 if num>len(goods): 29 break 30 balance = balance - goods[num-1][1] 31 if balance>0: 32 print("已加入",goods[num-1][0],"到你的购物车，当前余额：",balance) 33 shopping_cart.append(goods[num-1]) 34 else: 35 print("余额不足，",balance,",请重新选择") 36 balance += goods[num-1][1] 37 38 print("你已购买以下商品：") 39 for x in shopping_cart: 40 for j in range(len(x)): 41 print(x[j], end=" ") 42 print() 43 44 print("你的余额为：",balance) 45 print("欢迎下次光临！")
#元组##
元组可以看成是可变的列表
#定义
a=(1,2,6,4,3,7,9,5,3)
要是只有一个元素，要加上一个逗号
b=("hua",)