Summary

We give a lint here for FAST001 here when probably we should abort because neither Item nor Foo are defined.

Example:

from __future__ import annotations
from fastapi import FastAPI
from pydantic import BaseModel

app = FastAPI()

@app.post("/items/", response_model=Foo) # false positive FAST001
async def create_item(item: Item) -> Item:
    return item

Playground

This is because we check that two resolved names are equal - but .resolve_name returns an Option and in this case resolving both Foo and Item gives None:

Version

No response