F401 removes import required by typing annotations

[thomas-moulard]

F401 is a rule that removes unused imports.

The issue is that F401 removes imports that are necessary for typing annotations expressed as comments, see below.

Repro Case

from typing import Any  # <-- this import is removed by ruff
x = 1  # type: Any

Current Behavior

The import is eliminated erroneously:

x = 1  # type: Any

Desired Behavior

The code is unchanged.

from typing import Any  # <-- this import is removed by ruff
x = 1  # type: Any

[charliermarsh]

I believe this is a duplicate of #1619 (Ruff doesn't parse comment annotations right now).