提取所有 Json 鍵值

Question

我不熟悉 Python Json。 我有這些 Json 結果：

{
    "href": "https://api.spotify.com/v1/users/wizzler/playlists",
    "items": [
        {
            "collaborative": false,
            "external_urls": {
                "spotify": "http://open.spotify.com/user/wizzler/playlists/53Y8wT46QIMz5H4WQ8O22c"
            },
            "href": "https://api.spotify.com/v1/users/wizzler/playlists/53Y8wT46QIMz5H4WQ8O22c",
            "id": "53Y8wT46QIMz5H4WQ8O22c",
            "images": [],
            "name": "Wizzlers Big Playlist",
            "owner": {
                "external_urls": {
                    "spotify": "http://open.spotify.com/user/wizzler"
                },
                "href": "https://api.spotify.com/v1/users/wizzler",
                "id": "wizzler",
                "type": "user",
                "uri": "spotify:user:wizzler"
            },
            "public": true,
            "snapshot_id": "bNLWdmhh+HDsbHzhckXeDC0uyKyg4FjPI/KEsKjAE526usnz2LxwgyBoMShVL+z+",
            "tracks": {
                "href": "https://api.spotify.com/v1/users/wizzler/playlists/53Y8wT46QIMz5H4WQ8O22c/tracks",
                "total": 30
            },
            "type": "playlist",
            "uri": "spotify:user:wizzler:playlist:53Y8wT46QIMz5H4WQ8O22c"
        },
        {
            "collaborative": false,
            "external_urls": {
                "spotify": "http://open.spotify.com/user/wizzlersmate/playlists/1AVZz0mBuGbCEoNRQdYQju"
            },
            "href": "https://api.spotify.com/v1/users/wizzlersmate/playlists/1AVZz0mBuGbCEoNRQdYQju",
            "id": "1AVZz0mBuGbCEoNRQdYQju",
            "images": [],
            "name": "Another Playlist",
            "owner": {
                "external_urls": {
                    "spotify": "http://open.spotify.com/user/wizzlersmate"
                },
                "href": "https://api.spotify.com/v1/users/wizzlersmate",
                "id": "wizzlersmate",
                "type": "user",
                "uri": "spotify:user:wizzlersmate"
            },
            "public": true,
            "snapshot_id": "Y0qg/IT5T02DKpw4uQKc/9RUrqQJ07hbTKyEeDRPOo9LU0g0icBrIXwVkHfQZ/aD",
            "tracks": {
                "href": "https://api.spotify.com/v1/users/wizzlersmate/playlists/1AVZz0mBuGbCEoNRQdYQju/tracks",
                "total": 58
            },
            "type": "playlist",
            "uri": "spotify:user:wizzlersmate:playlist:1AVZz0mBuGbCEoNRQdYQju"
        }
    ],
    "limit": 9,
    "next": null,
    "offset": 0,
    "previous": null,
    "total": 9
}

現在我只需要提取播放列表 id。 怎么做？

編輯：

我得到 Json 數據：

r = requests.get(BASE_URL + 'users/' + user_id + '/playlists', headers=headers)

r = r.json()

print(r)將 Json 數據返回給我。 當我嘗試data = json.load(r)我得到這些錯誤！ AttributeError: 'dict' object has no attribute 'read'

Answer 1

首先，使用內置的json庫加載 JSON 文件。

import json
with open('path/to/json/file.json') as f:
    data = json.load(f)

然后，使用列表推導僅獲取 ID。

playlist_ids = [item['id'] for item in data['items']]

編輯：或者，如果您已經解析了 JSON，只需使用列表理解。 不要這樣做r = r.json() ，這會將請求 object 重置為數據。 將其設置為其他變量， data正常 - data = r.json()

playlist_ids = [item['id'] for item in data['items']]

編輯 2：如果您只想要所有者 ID 為"wizzler"的位置，則將 if 子句添加到列表理解中。

playlist_ids = [item['id'] for item in data['items'] if item['owner']['id'] == 'wizzler']