# grey-haven-tdd-python

> Python Test-Driven Development expertise with pytest, strict red-green-refactor methodology, FastAPI testing patterns, and Pydantic model testing. Use when implementing Python features with TDD, writing pytest tests, testing FastAPI endpoints, developing with test-first approach, or when user mentions 'Python TDD', 'pytest', 'FastAPI testing', 'red-green-refactor', 'Python unit tests', 'test-driven Python', or 'Python test coverage'.

- Author: Jay Scambler
- Repository: greyhaven-ai/claude-code-config
- Version: 20260110002840
- Stars: 18
- Forks: 0
- Last Updated: 2026-02-06
- Source: https://github.com/greyhaven-ai/claude-code-config
- Web: https://mule.run/skillshub/@@greyhaven-ai/claude-code-config~grey-haven-tdd-python:20260110002840

---

---
name: grey-haven-tdd-python
description: "Python Test-Driven Development expertise with pytest, strict red-green-refactor methodology, FastAPI testing patterns, and Pydantic model testing. Use when implementing Python features with TDD, writing pytest tests, testing FastAPI endpoints, developing with test-first approach, or when user mentions 'Python TDD', 'pytest', 'FastAPI testing', 'red-green-refactor', 'Python unit tests', 'test-driven Python', or 'Python test coverage'."
# v2.0.43: Skills to auto-load for subagents spawned from this skill
skills:
  - grey-haven-code-style
  - grey-haven-api-design-standards
  - grey-haven-test-generation
# v2.0.74: Restrict tools available when this skill is active
allowed-tools:
  - Read
  - Write
  - MultiEdit
  - Bash
  - Grep
  - Glob
  - TodoWrite
---

# TDD Python Skill

Python Test-Driven Development following strict red-green-refactor cycle with pytest and comprehensive coverage.

## Description

Systematic Python implementation using TDD methodology, ensuring tests written first and driving design decisions.

## What's Included

- **Examples**: Python TDD cycles, FastAPI TDD, Pydantic model TDD
- **Reference**: pytest patterns, Python testing best practices
- **Templates**: pytest templates, TDD workflows

## Use When

- Implementing Python features with TDD
- FastAPI development
- Pydantic model development

## Related Agents

- `tdd-python-implementer`

**Skill Version**: 1.0