Question

提前感谢您提供的任何帮助。

我正在使用Django Rest Framework和Vue.js构建应用程序。我正在使用Spotify API以及从DRF提供数据。当我使用以下代码进行艺术家搜索时：

np.array([(755, 855, 755, 855, 743, 843, 743, 843, 2),
          (755, 855, 755, 855, 743, 843, 743, 843, 2),
          (755, 855, 755, 855, 743, 843, 743, 843, 2),
          (693, 793, 693, 793, 693, 793, 693, 793, 1),
          (693, 793, 693, 793, 693, 793, 693, 793, 1),
          (755, 855, 755, 855, 743, 843, 743, 843, 2),
          (693, 793, 693, 793, 693, 793, 693, 793, 1)], 
         dtype=[('sensorA', '<u4'), ('sensorB', '<u4'),
                ('sensorC', '<u4'), ('sensorD', '<u4'),
                ('sensorE', '<u4'), ('sensorF', '<u4'),
                ('sensorG', '<u4'), ('sensorH', '<u4'),
                ('signal', '<u4')])

它完全返回我所期望的Spotify API的艺术家搜索。结果看起来像这样。（我只是为了简洁而显示前两个条目）

def get(self, request, *args, **kwargs):
    artist = services.spot_artist_search(self.kwargs['artist'])
    return Response(artist)

我想要做的是遍历此响应，并提取“＆＃39;图像”中的第一个条目。嵌套列表，然后用只有那个第一个条目替换嵌套列表。最终的JSON看起来像这样：

{
"artists": {
    "href": "https://api.spotify.com/v1/search?query=adele&type=artist&offset=0&limit=10",
    "items": [
        {
            "external_urls": {
                "spotify": "https://open.spotify.com/artist/4dpARuHxo51G3z768sgnrY"
            },
            "followers": {
                "href": null,
                "total": 6175115
            },
            "genres": [
                "dance pop",
                "pop"
            ],
            "href": "https://api.spotify.com/v1/artists/4dpARuHxo51G3z768sgnrY",
            "id": "4dpARuHxo51G3z768sgnrY",
            "images": [
                {
                    "height": 1000,
                    "url": "https://i.scdn.co/image/ccbe7b4fef679f821988c78dbd4734471834e3d9",
                    "width": 1000
                },
                {
                    "height": 640,
                    "url": "https://i.scdn.co/image/f8737f6fda048b45efe91f81c2bda2b601ae689c",
                    "width": 640
                },
                {
                    "height": 200,
                    "url": "https://i.scdn.co/image/df070ad127f62d682596e515ac69d5bef56e0897",
                    "width": 200
                },
                {
                    "height": 64,
                    "url": "https://i.scdn.co/image/cbbdfb209cc38b2999b1882f42ee642555316313",
                    "width": 64
                }
            ],
            "name": "Adele",
            "popularity": 85,
            "type": "artist",
            "uri": "spotify:artist:4dpARuHxo51G3z768sgnrY"
        },
        {
            "external_urls": {
                "spotify": "https://open.spotify.com/artist/19RHMn8FFkEFmhPwyDW2ZC"
            },
            "followers": {
                "href": null,
                "total": 3504
            },
            "genres": [],
            "href": "https://api.spotify.com/v1/artists/19RHMn8FFkEFmhPwyDW2ZC",
            "id": "19RHMn8FFkEFmhPwyDW2ZC",
            "images": [],
            "name": "Robyn Adele Anderson",
            "popularity": 42,
            "type": "artist",
            "uri": "spotify:artist:19RHMn8FFkEFmhPwyDW2ZC"
        },
        {
            "external_urls": {
                "spotify": "https://open.spotify.com/artist/5yUp79jSBSGdkbufl2hmcY"
            },
            "followers": {
                "href": null,
                "total": 477
            },
            "genres": [
                "violin"
            ],
            "href": "https://api.spotify.com/v1/artists/5yUp79jSBSGdkbufl2hmcY",
            "id": "5yUp79jSBSGdkbufl2hmcY",
            "images": [
                {
                    "height": 636,
                    "url": "https://i.scdn.co/image/581e634f260b77c93c61266bc6f8f755c2417a67",
                    "width": 640
                },
                {
                    "height": 298,
                    "url": "https://i.scdn.co/image/01aa0f1316ac6cc2f03306aaf851f32b20f50175",
                    "width": 300
                },
                {
                    "height": 64,
                    "url": "https://i.scdn.co/image/2051799990aa97da74524fdf9757e499cc51569b",
                    "width": 64
                }
            ],
            "name": "Adele Anthony",
            "popularity": 34,
            "type": "artist",
            "uri": "spotify:artist:5yUp79jSBSGdkbufl2hmcY"
        },

请你能告诉我怎么做这个？我还需要检查嵌套列表中是否有图像，因为并非所有结果都会返回一个图像。

Answer 1

好的，请尝试使用以下

# result = <api call>
for i in result["artists"]["items"]:
    if "images" in i and i["images"]:
        i["images"] = [i["images"][0]]

print result

看看这是否有效。

使用Django提取嵌套列表并替换值

1 个答案: