[ty] Avoid shadowing hints for attribute assignments#26164
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Typing conformance resultsNo changes detected ✅Current numbersThe percentage of diagnostics emitted that were expected errors held steady at 94.37%. The percentage of expected errors that received a diagnostic held steady at 89.00%. The number of fully passing files held steady at 94/134. |
Memory usage reportMemory usage unchanged ✅ |
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Summary
invalid-assignmentadds an implicit-shadowing hint when an assignment replaces a class or function binding. Prior to this change, the shared diagnostic construction also attached this hint to attribute assignments whose declared type happened to be a function, even though assigning an attribute does not shadow a name binding:This moves the shadowing-specific context to the general assignment path and only adds it for direct name targets. Invalid attribute assignments continue to report the assignability error, but no longer include misleading guidance about implicit shadowing. The existing diagnostics for direct class and function shadowing remain unchanged.
The regression snapshot covers the reported
ConfigParser.optionxformcase.Closes astral-sh/ty#1990.