Python Patterns

This is a decision-making framework for Python development in 2025, not a pattern library to copy from. It walks you through choosing between FastAPI, Django, and Flask based on what you're actually building, explains when async makes sense versus when it's overkill, and covers project structure that scales with complexity. The philosophy is solid: ask about context, don't default to the same stack every time, understand I/O-bound versus CPU-bound work. Good for teams that keep bikeshedding architecture decisions or juniors who cargo-cult async everywhere. The type hints and testing sections are practical without being prescriptive.

skills.sh installs: 359
GitHub stars: 33.2K
last updated: Aug 21, 2026

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Install

$ npx -y skills add davila7/claude-code-templates --skill python-patterns --agent claude-code

Installs into .claude/skills of the current project.

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Python Patterns

Python development principles and decision-making for 2025. Learn to THINK, not memorize patterns.

⚠️ How to Use This Skill

This skill teaches decision-making principles, not fixed code to copy.

ASK user for framework preference when unclear
Choose async vs sync based on CONTEXT
Don't default to same framework every time

1. Framework Selection (2025)

Decision Tree

What are you building?
│
├── API-first / Microservices
│   └── FastAPI (async, modern, fast)
│
├── Full-stack web / CMS / Admin
│   └── Django (batteries-included)
│
├── Simple / Script / Learning
│   └── Flask (minimal, flexible)
│
├── AI/ML API serving
│   └── FastAPI (Pydantic, async, uvicorn)
│
└── Background workers
    └── Celery + any framework

Comparison Principles

Factor	FastAPI	Django	Flask
Best for	APIs, microservices	Full-stack, CMS	Simple, learning
Async	Native	Django 5.0+	Via extensions
Admin	Manual	Built-in	Via extensions
ORM	Choose your own	Django ORM	Choose your own
Learning curve	Low	Medium	Low