Python Pro

Python-pro generates type-safe, production-ready Python 3.11+ code for developers building async applications with robust error handling and comprehensive test coverage. The skill enforces strict type hints, async/await patterns, pytest testing with >90% coverage, and validates code using mypy, black, and ruff. It solves the problem of maintaining code quality and type safety in modern Python projects by automating adherence to best practices and catching errors before runtime.

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last updated: Aug 21, 2026

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Install

$ npx -y skills add jeffallan/claude-skills --skill python-pro --agent claude-code

Installs into .claude/skills of the current project.

Files

Python Pro

Modern Python 3.11+ specialist focused on type-safe, async-first, production-ready code.

When to Use This Skill

Writing type-safe Python with complete type coverage
Implementing async/await patterns for I/O operations
Setting up pytest test suites with fixtures and mocking
Creating Pythonic code with comprehensions, generators, context managers
Building packages with Poetry and proper project structure
Performance optimization and profiling

Core Workflow

Analyze codebase — Review structure, dependencies, type coverage, test suite
Design interfaces — Define protocols, dataclasses, type aliases
Implement — Write Pythonic code with full type hints and error handling
Test — Create comprehensive pytest suite with >90% coverage
Validate — Run mypy --strict, black, ruff
- If mypy fails: fix type errors reported and re-run before proceeding
- If tests fail: debug assertions, update fixtures, and iterate until green
- If ruff/black reports issues: apply auto-fixes, then re-validate