时间戳

首页 > 解决方案 > 查找字典列表的总和

python - 查找字典列表的总和

问题描述

我有一个列表，其中包含很多看起来像这样的字典（我只插入了前两个）：

[
    {
        "_id": "60ca15162a42482a5fc83bcc",
        "name": "Fanta",
        "category": "Soft Drinks",
        "description": "Fresh Drink",
        "price": 14,
        "quantity": 104
    },
    {
        "_id": "60ca15162a42482a5fc83bcc",
        "name": "Fanta",
        "category": "Soft Drinks",
        "description": "Fresh Drink",
        "price": 16,
        "quantity": 104
    } ]

我想得到总价。总价看起来是这样的。

total=(14*104)+(16*104)

当列表中有很多字典时，我该怎么做？有什么想法吗？

标签： pythonlistdictionary

解决方案

您可以使用sum()：

lst = [
    {
        "_id": "60ca15162a42482a5fc83bcc",
        "name": "Fanta",
        "category": "Soft Drinks",
        "description": "Fresh Drink",
        "price": 14,
        "quantity": 104,
    },
    {
        "_id": "60ca15162a42482a5fc83bcc",
        "name": "Fanta",
        "category": "Soft Drinks",
        "description": "Fresh Drink",
        "price": 16,
        "quantity": 104,
    },
]

total = sum(d["price"] * d["quantity"] for d in lst)
print(total)

印刷：

3120

编辑：要创建一个总计列表：

total = [d["price"] * d["quantity"] for d in lst]
print(total)

印刷：

[1456, 1664]

推荐阅读