GeezerVison is showing github.com — Fix __build_class__ compatibility by youknowone · Pull Request #6308 · RustPython/RustPython
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youknowone
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Nov 29, 2025
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edited by coderabbitai
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Summary by CodeRabbit
- Refactor
- Improved class creation and metaclass resolution handling
- Updated error messages related to class instantiation
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coderabbitai
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Nov 29, 2025
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edited
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Important
Review skipped
Review was skipped due to path filters
⛔ Files ignored due to path filters (2)
Lib/test/test_descr.py is excluded by !Lib/**
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Walkthrough
The __build_class__ function's public signature in crates/vm/src/stdlib/builtins.rs was updated to use a name parameter instead of qualified_name. Internal logic was refactored to derive the Python class name object directly from the new parameter, along with adjustments to metaclass resolution and argument construction.
Changes
| Cohort / File(s) |
Summary |
__build_class__ signature and implementation crates/vm/src/stdlib/builtins.rs |
Parameter renamed from qualified_name: PyStrRef to name: PyStrRef; internal logic adjusted to use the new parameter for class name propagation; metaclass resolution, argument construction, and __classcell__ checks refactored |
Estimated code review effort
🎯 2 (Simple) | ⏱️ ~10 minutes
- Verify that all internal uses of the renamed parameter work correctly across metaclass resolution and class construction logic
- Check that callers of
__build_class__ are updated to pass the correct parameter
- Confirm the
__classcell__ check logic remains valid with the new parameter
Possibly related PRs
Poem
🐰 A class by any other name still builds true,
No more qualified names to confuse or construe,
With name so simple, the logic flows clean,
The metaclass knows just what we mean! ✨
Pre-merge checks and finishing touches
✅ Passed checks (3 passed)
| Check name |
Status |
Explanation |
| Description Check |
✅ Passed |
Check skipped - CodeRabbit’s high-level summary is enabled. |
| Title check |
✅ Passed |
The title 'Fix build_class compatibility' directly references the specific function being modified and indicates the nature of the change (a compatibility fix), which aligns with the actual modifications to the build_class function signature and internal implementation. |
| Docstring Coverage |
✅ Passed |
Docstring coverage is 100.00% which is sufficient. The required threshold is 80.00%. |
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