Repository: yt-dlp/yt-dlp
File: yt_dlp/extractor/xiaohongshu.py (Python)

Code before:

from .common import InfoExtractor
from ..utils import (
    float_or_none,
    int_or_none,
    js_to_json,
    url_or_none,
)
from ..utils.traversal import traverse_obj


class XiaoHongShuIE(InfoExtractor):
    _VALID_URL = r'https?://www\.xiaohongshu\.com/(explore|discovery/item)/(?P<id>[\da-f]+)'
    IE_DESC = '小红书'
    _TESTS = [{
        'url': 'https://www.xiaohongshu.com/explore/6411cf99000000001300b6d9',
        'md5': '2a87a77ddbedcaeeda8d7eae61b61228',
        'info_dict': {
            'id': '6411cf99000000001300b6d9',
            'ext': 'mp4',
            'uploader_id': '5c31698d0000000007018a31',
            'description': '#今日快乐今日发[话题]# #吃货薯看这里[话题]# #香妃蛋糕[话题]# #小五卷蛋糕[话题]# #新手蛋糕卷[话题]#',
            'title': '香妃蛋糕也太香了吧🔥不需要卷❗️绝对的友好',
            'tags': ['今日快乐今日发', '吃货薯看这里', '香妃蛋糕', '小五卷蛋糕', '新手蛋糕卷'],
            'duration': 101.726,
            'thumbnail': r're:https?://sns-webpic-qc\.xhscdn\.com/\d+/[a-z0-9]+/[\w]+',
        },
    }, {
        'url': 'https://www.xiaohongshu.com/discovery/item/674051740000000007027a15?xsec_token=CBgeL8Dxd1ZWBhwqRd568gAZ_iwG-9JIf9tnApNmteU2E=',
        'info_dict': {
            'id': '674051740000000007027a15',
            'ext': 'mp4',
            'title': '相互喜欢就可以了',
            'uploader_id': '63439913000000001901f49a',
            'duration': 28.073,
            'description': '#广州[话题]# #深圳[话题]# #香港[话题]# #街头采访[话题]# #是你喜欢的类型[话题]#',
            'thumbnail': r're:https?://sns-webpic-qc\.xhscdn\.com/\d+/[0-9a-f]+/[^/]+',
            'tags': ['广州', '深圳', '香港', '街头采访', '是你喜欢的类型'],

Review comment (suggestion):
[Don't capture groups you don't use](https://github.com/yt-dlp/yt-dlp/blob/master/CONTRIBUTING.md#dont-capture-groups-you-dont-use)
```suggestion
    _VALID_URL = r'https?://www\.xiaohongshu\.com/(?:explore|discovery/item)/(?P<id>[\da-f]+)'
```

Code after:

from .common import InfoExtractor
from ..utils import (
    float_or_none,
    int_or_none,
    js_to_json,
    url_or_none,
)
from ..utils.traversal import traverse_obj


class XiaoHongShuIE(InfoExtractor):
    _VALID_URL = r'https?://www\.xiaohongshu\.com/(?:explore|discovery/item)/(?P<id>[\da-f]+)'
    IE_DESC = '小红书'
    _TESTS = [{
        'url': 'https://www.xiaohongshu.com/explore/6411cf99000000001300b6d9',
        'md5': '2a87a77ddbedcaeeda8d7eae61b61228',
        'info_dict': {
            'id': '6411cf99000000001300b6d9',
            'ext': 'mp4',
            'uploader_id': '5c31698d0000000007018a31',
            'description': '#今日快乐今日发[话题]# #吃货薯看这里[话题]# #香妃蛋糕[话题]# #小五卷蛋糕[话题]# #新手蛋糕卷[话题]#',
            'title': '香妃蛋糕也太香了吧🔥不需要卷❗️绝对的友好',
            'tags': ['今日快乐今日发', '吃货薯看这里', '香妃蛋糕', '小五卷蛋糕', '新手蛋糕卷'],
            'duration': 101.726,
            'thumbnail': r're:https?://sns-webpic-qc\.xhscdn\.com/\d+/[a-z0-9]+/[\w]+',
        },
    }, {
        'url': 'https://www.xiaohongshu.com/discovery/item/674051740000000007027a15?xsec_token=CBgeL8Dxd1ZWBhwqRd568gAZ_iwG-9JIf9tnApNmteU2E=',
        'info_dict': {
            'id': '674051740000000007027a15',
            'ext': 'mp4',
            'title': '相互喜欢就可以了',
            'uploader_id': '63439913000000001901f49a',
            'duration': 28.073,
            'description': '#广州[话题]# #深圳[话题]# #香港[话题]# #街头采访[话题]# #是你喜欢的类型[话题]#',
            'thumbnail': r're:https?://sns-webpic-qc\.xhscdn\.com/\d+/[\da-f]+/[^/]+',
            'tags': ['广州', '深圳', '香港', '街头采访', '是你喜欢的类型'],