msgspec.ValidationError: Expected 'object', got 'null'

[akatsukiHell]

Question

Hello, everyone. I'm parsed dynamic JSON from HTML and try to parse this part, trying get number from 'song' children in 'songPage' parent using msgspec but get the error:
msgspec.ValidationError: Expected 'object', got 'null' - at '$.songPage[...]'

Python code

from msgspec.json import decode
from msgspec import Struct

data = re.search(
            r'window\.__PRELOADED_STATE__ = JSON\.parse\(\'(.*)\'\)', req
      ).group(1).replace("\\\\\\\"", '\'').replace("\\","")

class songID(Struct):
      song: int

class songData(Struct):
      songPage: dict[str, songID]

song_id = decode(data, type=songData)

JSON

{
"currentPage": "songPage",
   "songPage": {
       "longTailCacheExperiment": null,
       "song": 10584710,
       "pinnedQuestions": [],
       "metadataQuestions": [
           "producer:song:10584710",
           "release-date:song:10584710",
           "writer:song:10584710"
}

I looked at Conda Repodata in docs but don't understand how to can skip this 'null' part in the first line of children.

[uwinx]

@akatsukiHell, I don't think your schema matches the shape of your data.

try modifying your schema to something like:

# data from your previous code

class songID(Struct):
      song: int

class songData(Struct):
      songPage: songID

song_data = decode(data, type=songData)
song_id = song_data.songPage.song

songPage: dict[str, songID]
→ songPage: songID

Regarding:

how to can skip this 'null' part in the first line of children

msgspec already ignores all unknown fields by default. you can control it via forbid_unknown_fields flag.