Errors with pydantic 2 when using Field(...)

[noamk-hl]

Problem description

After migrating my code to pydantic 2, and having all the tests passing, I'm still getting various pylint errors, where pylint seems to detect the wrong type for fields having explicit Field(...) customization. I think the solution might be to do something like this, and I might have some time to do it but I'm not very familiar with pylint/astroid internals and I wanted someone else to take a look before I work on a PR.

Steps to reproduce the problem

This fails:

from pydantic import BaseModel, Field


class MyModel(BaseModel):
    data: dict[float, float] = Field(default_factory=dict)

    def get_data(self, key: float) -> float:
        return self.data[key]

with

E1136: Value 'self.data' is unsubscriptable (unsubscriptable-object)

Specifications like the version of the project, operating system, or hardware

• pylint version: 2.17.4
• pydatic version: 2.0.3
• python version: 3.10.12
• pylint-pydantic version: 0.2.2