[colbymchenry]

Summary

In Python, a call on a class whose base comes from outside the project no longer links to a project class that only shares the base's name. With class Color(Enum) after from enum import Enum, or class Color(enum.Enum), Color.name_of() no longer reaches a project Enum.name_of.

Follow-up to #3109, which fixed the extends edge and named this gap.

Root cause

The reader behind class-name calls doesn't use the extends edge. declaredSupertypes gives the names in the base list, and findInheritedClassMethod looks each one up by name. So the import never counted.

On sqlalchemy this produced a chain worth seeing. Query(…, Generic[_T]) has Generic from typing, the walk landed on a test's local class Generic, then on that test's Base, and on to FunctionElement, so query.select() linked to FunctionElement.select.

Fix

The walk now skips a project class whose name the class head binds outside the project. It uses the check from #3109, moved to name-matcher.ts so both callers share it: the import resolver already imports from there, not the reverse. The check reads the module through context.resolveModuleFile, the seam name matching already has.

A dotted base is bound through its first word: enum.Enum through import enum, e.Enum through import enum as e, and collections.abc.Mapping through import collections.abc, which the check now counts as binding collections.

Python only. TS, JS and the rest of the walk are unchanged.

Validation

Tests: python-outside-bases.test.ts gains 4. A named import, a receiver named after the class, and dotted, aliased and deep bases reach nothing. A project base and a class in a file the import path names still reach their methods. Without the gate, 2 of the 4 fail. Taking out the dotted word or the import a.b binding fails the dotted one. 11 pass here.

A/B against main, kernel on: 13 repos, 496,746 edges, 10 calls removed, 0 added, 0 moved, no extends touched.

Repo	Edges	Removed
sqlalchemy/sqlalchemy @ 2d8e649	229,518	10
python/mypy, litestar, polar server/polar, django django/, flask, requests, and the four small PEP 695 apps from #3105	256,859	0
expressjs/express, gin-gonic/gin (controls)	10,369	0

All 10 were read and all were wrong, each through typing's Generic into a test's own class Generic:

Removed	Call	Wrong target
4	value.self_group()	FunctionElement.self_group
4	query.select()	FunctionElement.select
1	query.alias()	FunctionElement.alias
1	query.compile()	DQLDMLClauseElement.compile

Cost: sqlalchemy, median of 3 interleaved runs: 27.8 s on main, 26.4 s here. That gap is noise, so nothing measurable.

Suite: 841 files (835 passed, 6 skipped), 9,890 tests passed, 2 expected failures, 0 failed, 87 skipped, on this exact commit, kernel on, 4 workers, Vitest 4.

🤖 Generated with Claude Code