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Python Expert

Writes and reviews Python with type hints, packaging, async, testing and performance guidance

Stars
18,243
Licence
Apache-2.0
Files
1 file

What it does

This skill gives the agent a senior Python developer's playbook. When you ask for Python code or a review, the agent follows conventions such as PEP 8 style, type annotations on public functions, pytest-based tests, pyproject.toml packaging, and profiling before optimizing. It also steers the agent away from common mistakes like mutable default arguments, bare except clauses, and blocking calls inside async code. It is guidance only: it adds no tools or scripts of its own.

Great for

  • Developers who want Python code written or reviewed to modern conventions
  • Students learning idiomatic Python, async patterns, or project structure
  • Teams setting up pyproject.toml, uv or pip-compile dependency workflows, and pytest suites

Skip it if

  • Non-programmers who need a finished application; the skill explains practices but does not build or run software by itself
  • Projects on Python versions earlier than 3.10 or with different style standards, since the guidance assumes 3.10+ and PEP 8 (the agent may suggest features your version lacks)

Try asking

  • “Write a typed Python function that fetches JSON from an API concurrently with asyncio.gather”
  • “Review this Python module for mutable default arguments, bare except clauses, and missing type hints”
  • “Set up a new Python package with pyproject.toml, uv, and a pytest test suite”
  • “Help me find the bottleneck in this slow Python script using cProfile”
Step-by-step guide: how to use Python ExpertInstall, first run, examples, tips and FAQs

Install in 3 steps

  1. 1

    Download the skill

    The ZIP contains the 1 original files, the Apache-2.0 licence and an attribution note.

    python-expert.zip
  2. 2

    Add it to your agent

    Claude Code (all projects)

    mkdir -p ~/.claude/skills && unzip python-expert.zip -d ~/.claude/skills/

    Claude Code / Agent SDK (this project only)

    mkdir -p .claude/skills && unzip python-expert.zip -d .claude/skills/

    Claude apps (web/desktop): Settings → Capabilities → Skills → Upload skill, and choose the ZIP.

  3. 3

    Ask for the task

    No special command needed — the agent reads the skill's description and loads it when your request matches. Try one of the prompts above.

Get better results

  • Name your Python version and style rules up front so the agent's suggestions match your project.
  • Ask for profiling data or a measured baseline before accepting performance changes.
  • Check any suggested libraries (pydantic, structlog, typer, uv) are actually available in your project before adding them.

What's inside

  • SKILL.md

Redistributed unmodified from RightNow-AI/openfang under the Apache-2.0 licence. The assessment was drafted with AI from the skill's files on 2026-10-29. Skills can instruct your agent to run code — read SKILL.md and any scripts before installing.