Add usethis-python-code skill with duplication guidance#1509
Merged
nathanjmcdougall merged 2 commits intomainfrom Mar 25, 2026
Merged
Add usethis-python-code skill with duplication guidance#1509nathanjmcdougall merged 2 commits intomainfrom
usethis-python-code skill with duplication guidance#1509nathanjmcdougall merged 2 commits intomainfrom
Conversation
Co-authored-by: nathanjmcdougall <18602289+nathanjmcdougall@users.noreply.github.com> Agent-Logs-Url: https://github.com/usethis-python/usethis-python/sessions/274a7107-acb2-4a6b-9371-c8ce45e3e7ea
Copilot
AI
changed the title
[WIP] Add guidance on code duplication introduction
Add Mar 25, 2026
usethis-python-code skill with duplication guidance
nathanjmcdougall
approved these changes
Mar 25, 2026
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
Add this suggestion to a batch that can be applied as a single commit.This suggestion is invalid because no changes were made to the code.Suggestions cannot be applied while the pull request is closed.Suggestions cannot be applied while viewing a subset of changes.Only one suggestion per line can be applied in a batch.Add this suggestion to a batch that can be applied as a single commit.Applying suggestions on deleted lines is not supported.You must change the existing code in this line in order to create a valid suggestion.Outdated suggestions cannot be applied.This suggestion has been applied or marked resolved.Suggestions cannot be applied from pending reviews.Suggestions cannot be applied on multi-line comments.Suggestions cannot be applied while the pull request is queued to merge.Suggestion cannot be applied right now. Please check back later.
PR #1437 revealed agents preemptively duplicate code (e.g. copying a helper into two modules) instead of creating a shared implementation. This adds a new skill to guide that decision.
Changes
.agents/skills/usethis-python-code/SKILL.md: Covers when to share vs. duplicate code — procedure for checking existing code first, criteria for when duplication is acceptable (different purposes, concrete behavioral differences, fragile coupling), and common mistakes (duplicating when replacing a dependency, speculative divergence). Referencesusethis-python-code-modify.AGENTS.md: Addedusethis-python-codeto the important skills list so it's loaded alongsideusethis-python-code-modifywhen modifying Python code.Original prompt
⌨️ Start Copilot coding agent tasks without leaving your editor — available in VS Code, Visual Studio, JetBrains IDEs and Eclipse.