替换字典列表中的项目

Question

我有以下词典列表：

menu = [{"food": "basic lasagna", "description": "basic lasagna takes tomato sauce and ground beef ."}, {"food": "carbonara pasta", "description": "there are many types of pasta in this world, but carbonara pasta is one of the best ."}, {...}, ...]

我必须在描述中用标签 <food> food </food> 突出显示食物，但我不知道如何在不使索引复杂化的情况下做到这一点。我最初的想法是：

for item in menu:
    tag = item["food"]
    if item["food"] in item["description"]:
        i = tag.index()
        tagging = "<food> " + tag + "</food>"

但后来我卡住了，因为我真的不知道如何更换物品。有什么建议吗？

Answer 1

IIUC，你想要的可以用replace方法完成：

import json
menu = [{"food": "basic lasagna", "description": "basic lasagna takes tomato sauce and ground beef ."}, {"food": "carbonara pasta", "description": "there are many types of pasta in this world, but carbonara pasta is one of the best ."}]

for item in menu:
    item["description"] = item["description"].replace(item['food'], "<food>" + item['food'] + "</food>")

print(json.dumps(menu, indent=4))

输出：

[
    {
        "food": "basic lasagna",
        "description": "<food>basic lasagna</food> takes tomato sauce and ground beef ."
    },
    {
        "food": "carbonara pasta",
        "description": "there are many types of pasta in this world, but <food>carbonara pasta</food> is one of the best ."
    }
]

替换字典列表中的项目

Replacing items in a list of dictionaries

dictionary

list

python-3.x