ruff/crates/ty_python_semantic
Eric Jolibois 58efd19f11
Some checks are pending
CI / cargo test (linux) (push) Blocked by required conditions
CI / Determine changes (push) Waiting to run
CI / cargo fmt (push) Waiting to run
CI / cargo clippy (push) Blocked by required conditions
CI / cargo test (linux, release) (push) Blocked by required conditions
CI / cargo test (windows) (push) Blocked by required conditions
CI / cargo test (wasm) (push) Blocked by required conditions
CI / cargo build (release) (push) Waiting to run
CI / mkdocs (push) Waiting to run
CI / cargo build (msrv) (push) Blocked by required conditions
CI / cargo fuzz build (push) Blocked by required conditions
CI / fuzz parser (push) Blocked by required conditions
CI / test scripts (push) Blocked by required conditions
CI / ecosystem (push) Blocked by required conditions
CI / Fuzz for new ty panics (push) Blocked by required conditions
CI / cargo shear (push) Blocked by required conditions
CI / python package (push) Waiting to run
CI / pre-commit (push) Waiting to run
CI / formatter instabilities and black similarity (push) Blocked by required conditions
CI / test ruff-lsp (push) Blocked by required conditions
CI / check playground (push) Blocked by required conditions
CI / benchmarks-instrumented (push) Blocked by required conditions
CI / benchmarks-walltime (push) Blocked by required conditions
[ty Playground] Release / publish (push) Waiting to run
[ty] apply KW_ONLY sentinel only to local fields (#19986)
fix https://github.com/astral-sh/ty/issues/1047

## Summary

This PR fixes how `KW_ONLY` is applied in dataclasses. Previously, the
sentinel leaked into subclasses and incorrectly marked their fields as
keyword-only; now it only affects fields declared in the same class.

```py
from dataclasses import dataclass, KW_ONLY

@dataclass
class D:
    x: int
    _: KW_ONLY
    y: str

@dataclass
class E(D):
    z: bytes

# This should work: x=1 (positional), z=b"foo" (positional), y="foo" (keyword-only)
E(1, b"foo", y="foo")

reveal_type(E.__init__)  # revealed: (self: E, x: int, z: bytes, *, y: str) -> None
```

<!-- What's the purpose of the change? What does it do, and why? -->

## Test Plan

<!-- How was it tested? -->
mdtests
2025-08-19 11:01:35 -07:00
..
resources [ty] apply KW_ONLY sentinel only to local fields (#19986) 2025-08-19 11:01:35 -07:00
src [ty] apply KW_ONLY sentinel only to local fields (#19986) 2025-08-19 11:01:35 -07:00
tests [ty] Track open files in the server (#19264) 2025-07-18 19:33:35 +05:30
build.rs Rename Red Knot (#17820) 2025-05-03 19:49:15 +02:00
Cargo.toml [ty] Avoid overcounting shared memory usage (#19773) 2025-08-06 15:32:02 -04:00
mdtest.py Rename Red Knot (#17820) 2025-05-03 19:49:15 +02:00
mdtest.py.lock Rename Red Knot (#17820) 2025-05-03 19:49:15 +02:00