notion_client does not work in a class under multiprocessing about notion-sdk-py

[ramnes]

I can't help on the usage of the multiprocessing library because I've almost never used it.

That being said, you get this error because the library is trying to pickle your Client instance (because it pickles the Task instance in the first place, I guess), most likely so that it can be passed between processes. Notion clients aren't meant to be passed between processes or even pickled, and you'd have the exact same with something like httpx.Client for example.

Do you have a good reason to pass the client between processes in particular (i.e. your first example), rather than defining a global context client that will get forked (i.e. your second example)?

[ramnes]

Going ahead and closing this one, but feel free to comment if this is still an issue and have more context to give.