Python-追加时出现错误

在为学校做一个项目时，我在代码中遇到了一个bug。这意味着存储以前输入的数据，然后在代码末尾打印

例： 如果输入item1 item2和item3，则只显示item3的信息，而不是所有信息

groceryHistory = []


stop = 'c'

while stop != 'q':
  item_name = input('Item name:\n')
  quantity = input('Quantity purchased:\n')
  cost = input('Price per item:\n')
#Above Prompts user to enter the item, quantity, and price of the items they're purchasing
  grocery_item = {'name':item_name, 'number': int(quantity), 'price': float(cost)}
  groceryHistory.append(grocery_item)
#Above stores the item within the grocery history list that is held at beginning of code
  stop = input("Would you like to enter another item?\nType 'c' for continue or 'q' to quit:\n")
#If user enters q, the loop will end. C will start the loop over again.

grand_total = 0

#Calculating totals using the history that is stored
for grocery_item in groceryHistory:
  item_total = grocery_item['number'] * grocery_item['price']
  grand_total += item_total


print(str(grocery_item['number']) + ' ' + grocery_item['name'] + " @ $"+str(grocery_item['price']) + ' ea $' + str(item_total))

print('Grand total: $' + str(grand_total))

---

不要用伪值初始化变量，使用while True并在结束时使用break退出循环。按4缩进，而不是按2空格缩进。我认为，您希望在for循环中打印

：

grocery_history = []
while True:
    item_name = input('Item name:\n')
    quantity = input('Quantity purchased:\n')
    cost = input('Price per item:\n')
    grocery_item = {
        'name': item_name,
        'number': int(quantity),
        'price': float(cost),
    }
    grocery_history.append(grocery_item)
    stop = input("Would you like to enter another item?\nType 'c' for continue or 'q' to quit:\n")
    if stop == 'q':
        break

grand_total = 0
for grocery_item in grocery_history:
    item_total = grocery_item['number'] * grocery_item['price']
    grand_total += item_total
    print(f"{grocery_item['number']} {grocery_item['name']} @ ${grocery_item['price']} ea ${item_total}")

print(f'Grand total: ${grand_total}')