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Shunsuke Shibayama 342b2665db
[ty] basic narrowing on attribute and subscript expressions (#17643) 
## Summary

This PR closes astral-sh/ty#164.

This PR introduces a basic type narrowing mechanism for
attribute/subscript expressions.
Member accesses, int literal subscripts, string literal subscripts are
supported (same as mypy and pyright).

## Test Plan

New test cases are added to `mdtest/narrow/complex_target.md`.

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Co-authored-by: David Peter <mail@david-peter.de>
2025-06-17 11:07:46 +02:00
..
bad.txt [ty] basic narrowing on attribute and subscript expressions (#17643) 2025-06-17 11:07:46 +02:00
good.txt [ty] basic narrowing on attribute and subscript expressions (#17643) 2025-06-17 11:07:46 +02:00