No way to autofix F401 errors in __init__.py

[ezyang]

Summary

Repro:

init.py

from a import foo

def baz() -> None:
  pass

a.py

def foo():
  pass

ruff check --fix --unsafe-fixes --select ALL

The unused import is not removed. Now, I assume this is special cased because __init__.py is special. It would be nice if there a way to bypass the special case anyway though. For now, though, I think I'll get my code out of __init__.py...

As a stopgap, it would be nice if it said something about why the import was not fixed here, this was very difficult to Google for why it was not fixing it since everyone claimed unused imports would be removed by this.

Version

ruff 0.9.10

[ntBre]

This fix is only available with preview mode enabled:

> cat __init__.py
from a import foo


def baz() -> None:
  pass

> ruff check __init__.py --diff --select F401 --unsafe-fixes --preview
--- __init__.py
+++ __init__.py
@@ -1,4 +1,3 @@
-from a import foo


 def baz() -> None:

Would fix 1 error.

This seems to work for me, even for __init__.py, which was a pleasant surprise since there are several existing issues around F401 for __init__.py files.

[vikyd]

https://docs.astral.sh/ruff/tutorial/

--preview --unsafe-fixes are not mentioned in the tutorial page.

[MichaReiser]

docs.astral.sh/ruff/tutorial

--preview --unsafe-fixes are not mentioned in the tutorial page.

This is intentional. The tutorial should cover the bascis. Both --preview and --unsafe-fixes are more advanced concepts.