打印帐单

Question

我需要打印语句才能打印输入到列表中的每个项目。因此，如果我以1.49的价格购买1个苹果和以3.99的价格购买1个牛奶。输出应显示

• “ 1个Apple @ 1.49 ea 1.49”
• “ 1牛奶@ 3.99 ea 3.99
• “总计：$ 5.48

当前显示：

• “ 1牛奶@ 3.99”
• “ 1牛奶@ 3.99”
• “总计：$ 5.48”

这是我的代码：'''

    grocery_item = {}
    grocery_history = []

'''    
    stop = 'c'

    while stop == 'c':

      item_name = input("Item name:\n")
      quantity = input("Quantity purchased:\n")   
      cost = input("Price per item:\n")


      grocery_item['name'] = item_name   
      grocery_item['number'] = quantity 
      grocery_item['price'] = float(cost)

      grocery_history.append(grocery_item)

      stop = input("Would you like to enter another item?\n Type 'c' for continue or 'q' to quit:\n")


      grand_total = 0


    for items in range(0, len(grocery_history)):


        item_total = int(grocery_history[items].get('number')) * float(grocery_history[items].get('price'))

        grand_total = grand_total + float(item_total)

    print(str(grocery_history[items]['number']) + ' ' + str(grocery_history[items]['name']) + ' @ $' + str(grocery_history[items]['price']) + ' ea $' + str('%.2f' % item_total))

    item_total = 0
    print(str('Grand total: $%.2f' % grand_total))

Answer 1

在while循环内移动grocery_item = {}。

然后移动print(str(grocery_history[items]['number']) + ' ' + str(grocery_history[items]['name']) + ' @ $' + str(grocery_history[items]['price']) + ' ea $' + str('%.2f' % item_total))for循环内的行

完整的代码应该是这样，

grocery_history = []
stop = 'c'

while stop == 'c':
  grocery_item = {}
  item_name = input("Item name:\n")
  quantity = input("Quantity purchased:\n")   
  cost = input("Price per item:\n")


  grocery_item['name'] = item_name   
  grocery_item['number'] = quantity 
  grocery_item['price'] = float(cost)

  grocery_history.append(grocery_item)

  stop = input("Would you like to enter another item?\n Type 'c' for continue or 'q' to quit:\n")


  grand_total = 0


for items in range(0, len(grocery_history)):


    item_total = int(grocery_history[items].get('number')) * float(grocery_history[items].get('price'))

    grand_total = grand_total + float(item_total)

    print(str(grocery_history[items]['number']) + ' ' + str(grocery_history[items]['name']) + ' @ $' + str(grocery_history[items]['price']) + ' ea $' + str('%.2f' % item_total))

item_total = 0
print(str('Grand total: $%.2f' % grand_total))