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youknowdotandCodex
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* Support PEP 798 comprehension unpacking Extract the remaining Python 3.15 comprehension unpacking implementation from the integration branch. Use existing list/set/dict update operations and an explicit inner iterator loop for generator unpacking. Align the public DictComp AST representation and schema with CPython. Migrate test_unpack_ex and test_unparse with scripts/update_lib from CPython d220409a13b77de7a6c30abe16ea90db01528edc. Preserve existing Rust tests; add no duplicate regression tests or snippets. AI-assisted source extraction, canonical migration, and independent source review with OpenAI Codex. Runtime validation is not yet complete. Assisted-by: OpenAI Codex:model version unavailable * Improve selected unpacking diagnostics and refresh canonical exception tests Normalize six supported comprehension-unpacking diagnostics using existing parser context. Restrict the dictionary-spread hint to its first entry to avoid changing unrelated diagnostics. Migrate the whole test_exceptions module from CPython d220409a13b77de7a6c30abe16ea90db01528edc with the existing updater, preserving only its two existing RustPython markers. Ruff sources and dependency pins are unchanged. Six focused check/build/strict Clippy gates passed. A paired 34-input compile-only comparison retains six canonical diagnostic improvements, with eight of fifteen canonical cases still differing; this is not full test_exceptions or CI validation. * Fix mapping-rest error locations and retire stale encoding xfail * Match remaining unpacking diagnostics without changing Ruff Use exact retained AST and error ownership to normalize the remaining CPython 3.15 unpacking diagnostics. Reparse only the owned call argument slice with the unchanged Ruff parser when its original recovery loses generator clauses. Validated all 30 canonical compile-only cases in exec and doctest-style single modes against CPython 3.15.0, plus finite surrounding controls. Targeted compiler Clippy and source-bound builds passed. Full CI is pending. Cspell alone was omitted with the maintainer’s explicit one-commit approval because its npm bootstrap downloads returned HTTP 403; all other applicable configured commit hooks ran. AI assistance: dot authored, reviewed, and validated the changes. The runtime does not expose its exact model version. Assisted-by: dot: model version not exposed --------- Co-authored-by: Codex <codex@openai.com>