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python3-core

Activates on any Python task involving *.py files, uv, ruff, ty, pytest, or pyproject.toml — loads the shared Python 3.11+ standards and routes the task to the specialist skill that applies them: TDD, CLI, web, data, async, typing, packaging, publishing, documentation sites, test design, test-failure analysis, or stdlib-only constrained environments.

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Jamie-BitFlight/claude_skills
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Files included (34)

  • SKILL.md4.3 KB
  • assets/.editorconfig653 B
  • assets/.markdownlint.json961 B
  • assets/example.pre-commit-config.yaml3.7 KB
  • assets/hatch_build.py4.6 KB
  • assets/version.py1.9 KB
  • references/modern-modules.md30.1 KB
  • references/modern-modules/arrow.md18.4 KB
  • references/modern-modules/attrs.md14.1 KB
  • references/modern-modules/bidict.md17.4 KB
  • references/modern-modules/blinker.md16.2 KB
  • references/modern-modules/boltons.md15.2 KB
  • references/modern-modules/box.md18.7 KB
  • references/modern-modules/copier.md21.8 KB
  • references/modern-modules/datasette.md20.1 KB
  • references/modern-modules/fabric.md19.8 KB
  • references/modern-modules/GitPython.md15.1 KB
  • references/modern-modules/httpx.md21.2 KB
  • references/modern-modules/paho-mqtt.md25.3 KB
  • references/modern-modules/prefect.md15.0 KB
  • references/modern-modules/python-diskcache.md29.6 KB
  • references/modern-modules/python-dotenv.md20.5 KB
  • references/modern-modules/robotframework.md18.9 KB
  • references/modern-modules/shiv.md15.0 KB
  • references/modern-modules/uvloop.md12.9 KB
  • references/PEP723.md15.0 KB
  • references/python-development-orchestration.md444 B
  • references/python311-features.md7.3 KB
  • references/python312-features.md3.6 KB
  • references/python313-features.md4.7 KB
  • references/python314-features.md6.2 KB
  • references/tool-library-registry.md112.4 KB
  • references/typing-matrix.md2.1 KB
  • references/user-project-conventions.md24.0 KB

SKILL.md (original)

Review the instructions the agent will receive before you install.

Python Engineering Routing

Load python-engineering:standards-for-python-development first. It holds every rule this plugin enforces — typing and the Any boundary policy, architecture and SOLID, error handling, security, performance, identifier naming, script dependencies, Rich/Typer output, testing, and tooling defaults. This skill routes the task to the specialist that applies them.

Typing Lane

python3-typing picks the lane from the project's requires-python floor and the dependencies already installed. references/typing-matrix.md shows each lane's imports and boundary shape; references/python311-features.md through references/python314-features.md list what each version adds.

Domain Routing

Load a skill only when the task clearly matches it.

TaskLoad
Test-driven development, red-green-refactor, tests before implementationpython3-tdd
Designing a test suite — coverage strategy, test pyramid, fixture hierarchy, mutation planpython3-test-design
Deciding whether a failing test is a genuine bug or a test defectanalyze-test-failures
Resetting the investigation approach to a test failure — dual-hypothesis protocol, red flagstest-failure-mindset
Auditing a whole suite — coverage, isolation, mock usage, naming, completenesscomprehensive-test-review
Typer/Rich CLI tools, progress bars, terminal outputpython3-cli
FastAPI, Starlette, Django, Flaskpython3-web
pandas, numpy, scipy, jupyter, data pipelinespython3-data
async/await, asyncio, concurrent I/O, task schedulingasync-python-patterns
Adding a feature to an existing project — discovery, MoSCoW, TDD, integration, verificationpython3-add-feature
Writing a structured feature task file with phases and acceptance criteriacreate-feature-task
Package metadata and build targets — pyproject.toml, build backend, entry pointspython3-packaging
Publishing to PyPI or cutting a release — CI workflows, trusted publishing, TestPyPIpython3-publish-release-pipeline
uv, Hatchling, ty, pre-commit, TOML editingpython3-tools
A documentation site with MkDocs or the Material thememkdocs
A confirmed restriction blocking dependency installation — airgapped, no uv, no internetpython3-stdlib-only
Broad Python quality/modernization audit of a PR, diff, staged/unstaged changes, file, or directorypython-quality-audit
Broad task classification is not enough to pick from this tablespecialist-skill-routing

Manual entrypoints: /python-engineering:python-quality-audit (fan-out quality/modernization audit), /python-engineering:review (bounded conventional code review), /python-engineering:cleanup (progressive quality improvement), /python-engineering:lint (deterministic checks), /python-engineering:debug (structured debugging).

References

FileContents
references/PEP723.mdInline script metadata — block syntax, shebang form, splitting a script across files
references/typing-matrix.mdTyping lane per Python version and available dependencies
references/python311-features.md … python314-features.mdWhat each Python version adds
references/modern-modules.mdVetted Python 3.11+ modules by use case
references/tool-library-registry.mdTool, library, and framework registry with pyproject.toml template variables
references/python-development-orchestration.mdOrchestrating a Python task across the specialist agents
references/user-project-conventions.mdConventions extracted from production projects

Assets

Templates at ${CLAUDE_PLUGIN_ROOT}/skills/python3-core/assets/:

  • version.py — dual-mode version management
  • hatch_build.py — build hook template
  • example.pre-commit-config.yaml — standard git hooks
  • .editorconfig — editor formatting

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