Does it include database migration support?

Yes, it covers the full SQLAlchemy 2.0 stack, including Alembic migrations, session management, and transactional integrity.

Is asynchronous programming supported?

Yes, it provides comprehensive guidance on using async/await, TaskGroups, and ensuring non-blocking I/O operations throughout the application stack.

How does it handle package management?

It prioritizes the modern uv toolchain for lightning-fast dependency resolution and environment management, though it can provide guidance for Rye and Poetry.

Does this skill support older versions of Python?

This skill is specifically optimized for Python 3.12+ to leverage the latest language features, performance improvements, and type-hinting capabilities.

Can I use this for data processing tasks?

Yes, the skill includes specialized support for Polars, making it highly effective for high-performance ETL pipelines and schema-validated data manipulation.

Modern Python Backend Development

Name: Modern Python Backend Development
Author: levifig

bylevifig

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API Development

Builds high-performance, asynchronous Python backend services using the FastAPI ecosystem and modern development standards.

The Python Development skill for Loaf equips Claude Code with the specialized knowledge to architect and implement modern Python 3.12+ applications. It focuses on the FastAPI ecosystem, leveraging Pydantic v2 for data validation, SQLAlchemy 2.0 for ORM, and the uv toolchain for high-performance package management. By enforcing strict type checking with mypy and promoting asynchronous patterns, this skill ensures the production of scalable, maintainable, and robust backend services that follow industry best practices.

Key Features

01High-performance data processing with Polars and asynchronous I/O

02Modern Python 3.12+ syntax and features enforcement

031 GitHub stars

04Strict type checking and static analysis using mypy and Ruff

05Automated testing infrastructure using pytest and async fixtures

06Specialized FastAPI and Pydantic v2 implementation patterns

Use Cases

01Building scalable RESTful APIs with high-performance asynchronous endpoints

02Setting up modern Python project environments using the uv toolchain

03Architecting data-driven backends with SQLAlchemy 2.0 and Alembic migrations

What are Skills?·How to Install

Install with 🐟 Skill.Fish

npx skillfish add levifig/loaf python-development

For use in Claude.ai and ChatGPT

Download Skill