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[ty] Fix find-references for import aliases #21736

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Merged
MichaReiser merged 2 commits into from
Dec 2, 2025
Merged

[ty] Fix find-references for import aliases #21736

MichaReiser merged 2 commits into from
Dec 2, 2025

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@MichaReiser MichaReiser commented Dec 1, 2025 •
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Summary

Fixes astral-sh/ty#1661

When searching the references of an import alias (e.g. abc in from warnings import deprecated as abc), return all references to that alias (but not of the imported symbol).

This matches Pylance's behavior.

Test Plan

Added test.

@MichaReiser MichaReiser added server Related to the LSP server ty Multi-file analysis & type inference labels Dec 1, 2025
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astral-sh-bot bot commented Dec 1, 2025 •
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Diagnostic diff on typing conformance tests

No changes detected when running ty on typing conformance tests ✅

@MichaReiser MichaReiser marked this pull request as ready for review December 1, 2025 17:41
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astral-sh-bot bot commented Dec 1, 2025 •
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mypy_primer results

Changes were detected when running on open source projects 
scikit-build-core (https://github.com/scikit-build/scikit-build-core)
- src/scikit_build_core/build/_pathutil.py:25:38: error[invalid-argument-type] Argument to function `__new__` is incorrect: Expected `str | PathLike[str]`, found `DirEntry[Path]`
- src/scikit_build_core/build/_pathutil.py:27:24: error[invalid-argument-type] Argument to function `__new__` is incorrect: Expected `str | PathLike[str]`, found `DirEntry[Path]`
- src/scikit_build_core/build/wheel.py:98:20: error[no-matching-overload] No overload of bound method `__init__` matches arguments
- Found 45 diagnostics
+ Found 42 diagnostics

pydantic (https://github.com/pydantic/pydantic)
- pydantic/fields.py:943:5: error[invalid-parameter-default] Default value of type `PydanticUndefinedType` is not assignable to annotated parameter type `dict[str, int | float | str | ... omitted 3 union elements] | ((dict[str, int | float | str | ... omitted 3 union elements], /) -> None) | None`
+ pydantic/fields.py:943:5: error[invalid-parameter-default] Default value of type `PydanticUndefinedType` is not assignable to annotated parameter type `dict[str, Divergent] | ((dict[str, Divergent], /) -> None) | None`
- pydantic/fields.py:983:5: error[invalid-parameter-default] Default value of type `PydanticUndefinedType` is not assignable to annotated parameter type `dict[str, int | float | str | ... omitted 3 union elements] | ((dict[str, int | float | str | ... omitted 3 union elements], /) -> None) | None`
+ pydantic/fields.py:983:5: error[invalid-parameter-default] Default value of type `PydanticUndefinedType` is not assignable to annotated parameter type `dict[str, Divergent] | ((dict[str, Divergent], /) -> None) | None`
- pydantic/fields.py:1026:5: error[invalid-parameter-default] Default value of type `PydanticUndefinedType` is not assignable to annotated parameter type `dict[str, int | float | str | ... omitted 3 union elements] | ((dict[str, int | float | str | ... omitted 3 union elements], /) -> None) | None`
+ pydantic/fields.py:1026:5: error[invalid-parameter-default] Default value of type `PydanticUndefinedType` is not assignable to annotated parameter type `dict[str, Divergent] | ((dict[str, Divergent], /) -> None) | None`
- pydantic/fields.py:1066:5: error[invalid-parameter-default] Default value of type `PydanticUndefinedType` is not assignable to annotated parameter type `dict[str, int | float | str | ... omitted 3 union elements] | ((dict[str, int | float | str | ... omitted 3 union elements], /) -> None) | None`
+ pydantic/fields.py:1066:5: error[invalid-parameter-default] Default value of type `PydanticUndefinedType` is not assignable to annotated parameter type `dict[str, Divergent] | ((dict[str, Divergent], /) -> None) | None`
- pydantic/fields.py:1109:5: error[invalid-parameter-default] Default value of type `PydanticUndefinedType` is not assignable to annotated parameter type `dict[str, int | float | str | ... omitted 3 union elements] | ((dict[str, int | float | str | ... omitted 3 union elements], /) -> None) | None`
+ pydantic/fields.py:1109:5: error[invalid-parameter-default] Default value of type `PydanticUndefinedType` is not assignable to annotated parameter type `dict[str, Divergent] | ((dict[str, Divergent], /) -> None) | None`
- pydantic/fields.py:1148:5: error[invalid-parameter-default] Default value of type `PydanticUndefinedType` is not assignable to annotated parameter type `dict[str, int | float | str | ... omitted 3 union elements] | ((dict[str, int | float | str | ... omitted 3 union elements], /) -> None) | None`
+ pydantic/fields.py:1148:5: error[invalid-parameter-default] Default value of type `PydanticUndefinedType` is not assignable to annotated parameter type `dict[str, Divergent] | ((dict[str, Divergent], /) -> None) | None`
- pydantic/fields.py:1188:5: error[invalid-parameter-default] Default value of type `PydanticUndefinedType` is not assignable to annotated parameter type `dict[str, int | float | str | ... omitted 3 union elements] | ((dict[str, int | float | str | ... omitted 3 union elements], /) -> None) | None`
+ pydantic/fields.py:1188:5: error[invalid-parameter-default] Default value of type `PydanticUndefinedType` is not assignable to annotated parameter type `dict[str, Divergent] | ((dict[str, Divergent], /) -> None) | None`
- pydantic/fields.py:1567:13: error[invalid-argument-type] Argument is incorrect: Expected `dict[str, int | float | str | ... omitted 3 union elements] | ((dict[str, int | float | str | ... omitted 3 union elements], /) -> None) | None`, found `Top[dict[Unknown, Unknown]] | (((dict[str, int | float | str | ... omitted 3 union elements], /) -> None) & ~Top[dict[Unknown, Unknown]]) | None`
+ pydantic/fields.py:1567:13: error[invalid-argument-type] Argument is incorrect: Expected `dict[str, Divergent] | ((dict[str, Divergent], /) -> None) | None`, found `Top[dict[Unknown, Unknown]] | (((dict[str, Divergent], /) -> None) & ~Top[dict[Unknown, Unknown]]) | None`

No memory usage changes detected ✅

Gankra
Gankra approved these changes Dec 1, 2025
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Could you add snapshot-tests for the inverse (find-references on the uses of the alias)?

And duplicate the tests in the renames module?

@AlexWaygood AlexWaygood removed their request for review December 1, 2025 17:46
@MichaReiser MichaReiser changed the title [ty] Fix find-references for aliased imports [ty] Fix find-references for import aliases Dec 2, 2025
@MichaReiser MichaReiser merged commit 644096e into main Dec 2, 2025
40 checks passed
@MichaReiser MichaReiser deleted the micha/fix-find-references-import-alias branch December 2, 2025 13:37
dcreager added a commit that referenced this pull request Dec 2, 2025
@dcreager
Merge remote-tracking branch 'origin/main' into dcreager/callable-return
2b949b3 
* origin/main: (67 commits)
  Move `Token`, `TokenKind` and `Tokens` to `ruff-python-ast` (#21760)
  [ty] Don't confuse multiple occurrences of `typing.Self` when binding bound methods (#21754)
  Use our org-wide Renovate preset (#21759)
  Delete `my-script.py` (#21751)
  [ty] Move `all_members`, and related types/routines, out of `ide_support.rs` (#21695)
  [ty] Fix find-references for import aliases (#21736)
  [ty] add tests for workspaces (#21741)
  [ty] Stop testing the (brittle) constraint set display implementation (#21743)
  [ty] Use generator over list comprehension to avoid cast (#21748)
  [ty] Add a diagnostic for prohibited `NamedTuple` attribute overrides (#21717)
  [ty] Fix subtyping with `type[T]` and unions (#21740)
  Use `npm ci --ignore-scripts` everywhere (#21742)
  [`flake8-simplify`] Fix truthiness assumption for non-iterable arguments in tuple/list/set calls (`SIM222`, `SIM223`) (#21479)
  [`flake8-use-pathlib`] Mark fixes unsafe for return type changes (`PTH104`, `PTH105`, `PTH109`, `PTH115`) (#21440)
  [ty] Fix auto-import code action to handle pre-existing import
  Enable PEP 740 attestations when publishing to PyPI (#21735)
  [ty] Fix find references for type defined in stub (#21732)
  Use OIDC instead of codspeed token (#21719)
  [ty] Exclude `typing_extensions` from completions unless it's really available
  [ty] Fix false positives for `class F(Generic[*Ts]): ...` (#21723)
  ...
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rename doesn't work for imports from third-party files

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@MichaReiser @Gankra