From python3-development
Routes Python dev tasks to specialist skills by trigger-matching Typer CLI, Rich terminal UI, Textual TUI, uv, Hatchling, pre-commit, async code, PyPI packaging, linting, and modernization.
npx claudepluginhub jamie-bitflight/claude_skills --plugin python3-developmentThis skill uses the workspace's default tool permissions.
Scan your task description against the triggers below. For every match, call `Skill(skill="...")` **before** writing any architecture, plan, or code. Multiple matches → load all matching skills.
Routes Python engineering tasks to specialist skills by matching task descriptions against triggers for Typer, Rich, Textual, FastMCP, ty, uv, Hatchling, pre-commit, async Python, PyPI packaging, linting, testing, and scripting.
Guides Python 3.11+ CLI apps with Typer/Rich, pytest test suites, ruff/mypy fixes, pyproject.toml config, portable scripts, and code reviews. Routes to specialist sub-skills.
Sets up Python projects with uv for deps/envs, ruff for linting/formatting, ty for types, pytest for testing. Use for new projects, scripts, or migrations from pip/Poetry.
Share bugs, ideas, or general feedback.
Scan your task description against the triggers below. For every match, call Skill(skill="...") before writing any architecture, plan, or code. Multiple matches → load all matching skills.
Triggers: typer.Typer(), typer.run(), @app.command, @app.callback, typer.Option, typer.Argument, Annotated[int, typer.Option()], Typer subcommands, app.add_typer(), CliRunner, typer.echo, typer.style, typer.secho, typer.Exit, typer.Abort, typer.confirm, typer.launch, autocompletion
Skill(skill="python3-development:typer")
Covers: app creation with typer.Typer() and typer.run(), CLI arguments and options (Annotated form), parameter types (enums, paths, dates, UUIDs, custom), subcommand composition with add_typer(), testing with typer.testing.CliRunner, output/colors/progress bars, callbacks, context, autocompletion, packaging.
Triggers: rich.console.Console, rich.table.Table, rich.progress.track, rich.progress.Progress, rich.panel.Panel, rich.tree.Tree, rich.live.Live, rich.syntax.Syntax, rich.markdown.Markdown, rich.logging.RichHandler, rich.traceback.install, rich.print, Rich markup tags, rich.columns.Columns, rich.layout.Layout, rich.json.JSON, rich.pretty.pprint, __rich_console__, __rich__, __rich_repr__
Skill(skill="python3-development:rich")
Covers: Console class and markup syntax, style strings and color formats, renderables (Panel, Table, Tree, Columns, Layout), Progress and Live displays, Text class, Syntax/Markdown/Pretty/JSON rendering, RichHandler for stdlib logging, Traceback installation, __rich_console__ and __rich_repr__ protocols, RegexHighlighter.
Triggers: textual.app.App, textual.widget.Widget, textual.screen.Screen, ComposeResult, compose(), mount(), query(), query_one(), textual.reactive.reactive, textual.css, @on, @work, run_worker, run_test, Textual CSS, Textual events, Textual workers, pytest-textual-snapshot
Skill(skill="python3-development:textual")
Covers: App lifecycle (run/exit/suspend), screen stack (push/pop/switch/modes), custom and builtin widgets, Line API, layout types (vertical/horizontal/grid), CSS selectors and pseudo-classes, events and message bubbling, custom messages, actions and key bindings, reactive attributes (watch/validate/compute/data binding), testing with Pilot API, snapshot testing, Workers and @work decorator.
Triggers: non-TTY output handling, table width measurement, Rich output in CI/piped environments, testing Rich-formatted CLI output, Console(force_terminal=True), Console(width=N), Console(file=StringIO()), console.capture(), export_text()
Skill(skill="python3-development:typer-and-rich")
Covers: non-TTY Console behavior (width defaults, color stripping, environment variables), Measurement protocol for renderable width, Progress/Live without TTY, testing Rich output in pytest (capture, export, snapshot), CliRunner with Rich, common assertion mistakes.
Triggers: building an MCP server, FastMCP(), @mcp.tool, @mcp.resource, MCP tools/resources/prompts, MCP transports (stdio/HTTP/SSE), server composition (mount()), MCP auth, MCP client, deploying an MCP server, migrating from FastMCP v2
Skill(skill="fastmcp-creator:fastmcp-creator")
Also activate for:
Skill(skill="fastmcp-creator:fastmcp-python-tests")fastmcp list / fastmcp call / fastmcp discover CLI → Skill(skill="fastmcp-creator:fastmcp-client-cli")After loading, follow the trigger matrix inside that skill to load only the reference files relevant to your specific task.
Triggers: ty check, ty.toml, [tool.ty] in pyproject.toml, suppressing ty diagnostics, ty rule names and severity levels, ty environment/module resolution, unresolved imports in ty, migrating from mypy or pyright to ty, integrating ty with editors or CI
Skill(skill="python3-development:ty")
Covers: CLI flags, configuration schema, rule levels (error/warn/ignore), suppression comments (ty: ignore, type: ignore), virtual environment discovery, Python version targeting, installation, VS Code/Neovim/Zed/PyCharm integration, troubleshooting.
Does NOT cover: deep mypy or pyright configuration (follow the project’s pyproject.toml when the repo already uses those tools — do not force ty). For annotation patterns shared across checkers, see python3-development references (e.g. type-safety-mypy). Does not replace a dedicated typing tutorial for writing annotations from scratch.
Triggers: uv add, uv run, uv build, uv publish, uv sync, uv lock, uvx, PEP 723 inline script metadata, managing Python versions with uv, configuring package indexes or private registries, workspace configuration ([tool.uv.workspace]), migrating from pip/poetry/conda, CI/CD with astral-sh/setup-uv, Docker with uv, uv venv, dependency groups, uv tool install
Skill(skill="python3-development:uv")
Key facts — do not guess these from training data:
uv venv refuses to overwrite existing environments since 0.10.0 — pass --clearuv run not source .venv/bin/activateuv add not uv pip install for project dependenciesuv sync --frozen for CI; uv sync --locked to fail if lockfile is stale#!/usr/bin/env -S uv --quiet run --active --scriptTriggers: [build-system] using hatchling, hatch_build.py, [tool.hatchling], wheel/sdist configuration, build hooks, hatch-vcs version management, force-include patterns, editable installs with hatchling, setuptools migration to hatchling
Skill(skill="python3-development:hatchling")
Covers: PEP 517/518/621/660, project metadata, wheel and sdist targets, build hooks interface, version sources, file selection with glob patterns, VCS integration, plugin architecture.
Triggers: Python code that reads AND writes pyproject.toml or any .toml file, preserving comments and formatting during modification, tomlkit library, atomic config file updates
Skill(skill="python3-development:toml-python")
Use tomlkit (not tomllib) when writing or modifying TOML. tomllib is stdlib but read-only. Always open files in text mode ('r'/'w'), not binary.
Triggers: .pre-commit-config.yaml, prek install, pre-commit install, adding or modifying git hooks, prepare-commit-msg hooks, distributing a tool as a pre-commit hook, detecting which hook tool is installed
Skill(skill="python3-development:pre-commit")
Key fact: prek is a drop-in Rust replacement for pre-commit — same config file, identical CLI. Detect which is installed by reading .git/hooks/pre-commit line 2.
Triggers: asyncio, async def, await, concurrent I/O operations, aiohttp, anyio, trio, WebSocket servers, async background tasks, async queues, async database access, concurrent HTTP requests, async FastAPI
Skill(skill="python3-development:async-python-patterns")
Triggers: configuring pyproject.toml for distribution, preparing a package for PyPI, entry points, optional dependencies, PEP 517/518/621
Skill(skill="python3-development:python3-packaging")
For CI/CD pipeline to automate PyPI publishing (GitHub Actions or GitLab CI):
Skill(skill="python3-development:python3-publish-release-pipeline")
For README files that render correctly on PyPI (twine check, Markdown vs RST choice, readme field in pyproject.toml):
Skill(skill="python3-development:pypi-readme-creator")
Triggers: more than 3 ruff/mypy/basedpyright/pyright errors requiring root-cause analysis, type flow analysis across multiple files, deciding whether to suppress vs fix a diagnostic, linting errors you cannot resolve with standard patterns
Skill(skill="holistic-linting:holistic-linting")
This skill behaves differently for orchestrators vs sub-agents. Orchestrators delegate to linting-root-cause-resolver agent; sub-agents run formatters and linters directly on touched files before completing.
Triggers: eliminating Any types across a module, removing legacy typing imports (Optional[X], Union[X, Y], List[X], Dict[K, V]), refactoring for Protocol usage, progressive quality improvement across multiple files
Skill(skill="python3-development:stinkysnake")
Multi-phase workflow: static analysis → type analysis → modernization planning → plan review → test-driven implementation. Load before planning a refactor, not mid-implementation.
Triggers: applying modern Python 3.11+ patterns, learning about PEPs (585, 604, 695), finding modern alternatives for old code
Skill(skill="python3-development:modernpython")
Triggers: validating script shebangs, PEP 723 inline metadata, creating standalone executable Python scripts
Skill(skill="python3-development:shebangpython")
Triggers: creating a structured feature development task, setting up feature tracking
Skill(skill="python3-development:create-feature-task")
Triggers: creating a new Claude Code skill from a template
Skill(skill="python3-development:use-command-template")
Triggers: implementing functions following a modernization plan, running tests iteratively until passing, executing the implementation phase of a refactor
Skill(skill="python3-development:snakepolish")
Triggers: reviewing Python code for quality issues, auditing code before merge, checking pattern compliance, verifying architecture standards
Skill(skill="python3-development:python3-review")
Note: If you are an orchestrator reviewing a completed feature, use the code-reviewer agent instead.
Triggers: auditing test quality, reviewing test coverage, checking for missing edge cases
Skill(skill="python3-development:comprehensive-test-review")
Triggers: investigating failing tests, debugging test failures, analyzing pytest output
Skill(skill="python3-development:analyze-test-failures")
If you are an orchestrator agent, delegate to these specialized agents based on the task phase:
Agent(subagent_type="python3-development:python-cli-design-spec")Agent(subagent_type="python3-development:python-pytest-architect")Agent(subagent_type="python3-development:python-cli-architect")Agent(subagent_type="python3-development:code-reviewer")