问：如何获取和值字典

Question

我在试我的代码。我很困惑。如何组合这两个字典，使结果的值与预期值相同？ 对于每一张这样的图表和总价，如下所示：

[{'Cherries': 1, 'Blueberries': 2, 'Banana': 3, 'Avocado': 2, 'Blackberries': 2}, {'Apple': 6, 'Avocado': 5, 'Banana': 3, 'Blackberries': 10, 'Blueberries': 12, 'Cherries': 7, 'Date Fruit': 14, 'Grapes': 15, 'Guava': 8, 'Jackfruit': 7, 'Kiwifruit': 9}]
output 70
[{'Cherries': 4, 'Blackberries': 2, 'Avocado': 2, 'Blueberries': 2}, {'Apple': 6, 'Avocado': 5, 'Banana': 3, 'Blackberries': 10, 'Blueberries': 12, 'Cherries': 7, 'Date Fruit': 14, 'Grapes': 15, 'Guava': 8, 'Jackfruit': 7, 'Kiwifruit': 9}]
output 82
[{'Avocado': 1, 'Blueberries': 2, 'Cherries': 3, 'Banana': 2, 'Apple': 1, 'Blackberries': 1}, {'Apple': 6, 'Avocado': 5, 'Banana': 3, 'Blackberries': 10, 'Blueberries': 12, 'Cherries': 7, 'Date Fruit': 14, 'Grapes': 15, 'Guava': 8, 'Jackfruit': 7, 'Kiwifruit': 9}]
output 72

对于我的代码：

fruits = ['Apple','Avocado','Banana','Blackberries','Blueberries','Cherries','Date Fruit','Grapes','Guava','Jackfruit','Kiwifruit']
prices = [6,5,3,10,12,7,14,15,8,7,9]
chart = ['Blueberries','Blueberries','Grapes','Apple','Apple','Apple','Blueberries','Guava','Jackfruit','Blueberries','Jackfruit']
d1 = dict(zip(fruits,prices))
fruit_price = None
dcounter = {}
for i in chart:
    if i in dcounter:
        dcounter[i] +=1
    else:
        dcounter[i] =1
#print(dcounter)
fruit_price = {}
for i, j in d1.items():
    for x, y in dcounter.items():
        if i == x:
            fruit_price[i]=(j*y)
#print(fruit_price)

def total_price(dcounter,fprice):
    total = 0
    for i in fruit_price.values():
        total+= i
    return total
total_price(dcounter,fruit_price)

我想为数据计数器和水果价格输入函数（定义总价）编码 请帮帮我。谢谢

Answer 1

你的问题一点也不清楚，然而，我设法理解了这个问题

首先，您的输入包含两个字典，一个是shopping_list，另一个是prices

所以，首先，先想一想，为了清晰起见，将两者提取出来

list_of_dicts = [{'Cherries': 1, 'Blueberries': 2, 'Banana': 3, 'Avocado': 2, 'Blackberries': 2}, {'Apple': 6, 'Avocado': 5, 'Banana': 3, 'Blackberries': 10, 'Blueberries': 12, 'Cherries': 7, 'Date Fruit': 14, 'Grapes': 15, 'Guava': 8, 'Jackfruit': 7, 'Kiwifruit': 9}]
shopping_list = list_of_dicts[0]
prices = list_of_dicts[1]

现在，可以很容易地遍历购物清单，得到您购买的物品的数量，然后将该数量乘以物品的价格

def get_bill(shopping_list, prices):
    bill = 0
    for item, amount in shopping_list.items():
        bill += prices[item]*amount
    return bill

get_bill(shopping_list, prices)
#70

现在过程已经清楚了，您可以在函数体中添加第一步，并向其传递单个输入

def get_bill(list_of_dicts):
    shopping_list = list_of_dicts[0]
    prices = list_of_dicts[1]
    bill = 0
    for item, amount in shopping_list.items():
        bill += prices[item]*amount
    return bill