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Title: Add agent skill guidance on avoiding deep attribute nesting across layers by Copilot · Pull Request #1712 · usethis-python/usethis-python · GitHub

Open Graph Title: Add agent skill guidance on avoiding deep attribute nesting across layers by Copilot · Pull Request #1712 · usethis-python/usethis-python

X Title: Add agent skill guidance on avoiding deep attribute nesting across layers by Copilot · Pull Request #1712 · usethis-python/usethis-python

Description: Code that accesses deeply nested attributes like result.solution.root and then operates on the internals (indexing, type assertions) is reaching through abstraction layers. This signals the logic belongs in the lower layer that owns those objects. Adds a new section to the usethis-python-code skill (v1.3 → v1.4) covering: Procedure for identifying and resolving deep nesting by moving logic down or adding interfaces Concrete example contrasting the anti-pattern with the preferred approach Common mistakes: extracting to local variables (hides but doesn't fix), adding type assertions at the wrong layer, adding thin wrappers instead of moving logic # Bad: caller knows internal structure of result.solution flat = result.solution.root idx = flat.index(step_name) predecessor = flat[idx - 1] if idx > 0 else None # Good: lower layer encapsulates the logic predecessor = result.get_predecessor(step_name)

Open Graph Description: Code that accesses deeply nested attributes like result.solution.root and then operates on the internals (indexing, type assertions) is reaching through abstraction layers. This signals the logic b...

X Description: Code that accesses deeply nested attributes like result.solution.root and then operates on the internals (indexing, type assertions) is reaching through abstraction layers. This signals the logic b...

Opengraph URL: https://github.com/usethis-python/usethis-python/pull/1712

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ea4c181 Add guidance on avoiding deep attribute nesting across layers to uset… Copilot Apr 1, 2026 https://github.com/usethis-python/usethis-python/pull/1712/commits/ea4c1814dedfc881070eb0052138fea32e233804
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