ruff/crates/ruff_linter/resources
Brent Westbrook 79006dfb52
[refurb] Parenthesize lambda and ternary expressions in iter (FURB122, FURB142) (#18592)
Summary
--

Fixes #18590 by adding parentheses around lambdas and if expressions in
`for` loop iterators for FURB122 and FURB142. I also updated the docs on
the helper function to reflect the part actually being parenthesized and
the new checks.

The `lambda` case actually causes a `TypeError` at runtime, but I think
it's still worth handling to avoid causing a syntax error.

```pycon
>>> s = set()
... for x in (1,) if True else (2,):
...     s.add(-x)
... for x in lambda: 0:
...     s.discard(-x)
...
Traceback (most recent call last):
  File "<python-input-0>", line 4, in <module>
    for x in lambda: 0:
             ^^^^^^^^^
TypeError: 'function' object is not iterable
```

Test Plan
--

New test cases based on the bug report

---------

Co-authored-by: Dylan <dylwil3@gmail.com>
2025-06-09 16:07:34 -04:00
..
test [refurb] Parenthesize lambda and ternary expressions in iter (FURB122, FURB142) (#18592) 2025-06-09 16:07:34 -04:00
__init__.py [pylint] (Re-)Implement import-private-name (C2701) (#9553) 2024-01-16 14:03:11 -05:00