Updated to pymongo 4.1.1 and upgraded mongoengine to 0.24.1 but received the following error:

pymongo/collection.py", line 1610, in find
    return Cursor(self, *args, **kwargs)
TypeError: __init__() got an unexpected keyword 
argument 'modifiers'

I was under the impression the latest versions would work together. Are they not compatible? The error appears in pymongo itself and not in my code.

CodePudding user response：

This pymongo error seems to come from a removed option.

From the pymongo API docs:

Changed in version 4.0: Removed the modifiers option. Empty projections (eg {} or []) are passed to the server as-is, rather than the previous behavior which substituted in a projection of {"_id": 1}. This means that an empty projection will now return the entire document, not just the "_id" field.

In addition, currently (2022-05-04) there seem to be several pymongo >= 4.0 issues against the mongoengine codebase.

CodePudding user response：

Thanks for pointing that out rickhg12hs, I missed it. That means the issue is not related to the mongoengine in this case. I was able to resolve the issue by removing a modifiers parameter in a find. I would vote you up but my reputation is not high enough yet to vote.