Pylance “Arguments missing for parameters” warning for BaseSettings

[Rohanf4f]

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Bug

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When using Pydantic v2 and pydantic-settings, VS Code’s Pylance type checker shows a false-positive warning:

Arguments missing for parameters "DATABASE_URL", "s3_bucket"
Pylance(reportCallIssue)

even though the values are correctly loaded from the .env file at runtime and the Settings object initializes without error.

🧠 Expected Behavior
No Pylance warnings — Settings() should be recognized as valid even without explicit arguments since .env values are loaded automatically.

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[Harmann60]

I can confirm this behavior — I’m seeing the same false-positive warning with Pydantic v2 and pydantic-settings in VS Code using Pylance.

The environment variables load correctly at runtime, but Pylance still reports missing arguments for fields defined in the model.

It seems like Pylance doesn’t recognize the .env injection mechanism and expects explicit parameters in the constructor.

Temporary workaround:
You can suppress the warning by using a # type: ignore comment or initializing with Settings(**{}) as a hint for the type checker.

Hopefully, this can be improved in a future Pylance update to better support Pydantic’s settings model initialization.