Python FastAPI Development

Expert patterns for building Python APIs with FastAPI, uv package manager, modular architecture, and SQLAlchemy database integration.

Technology Stack

• Runtime: Python 3.12+
• Package Manager: uv (fast, Rust-based)
• Framework: FastAPI
• ORM: SQLAlchemy 2.0 (async)
• Validation: Pydantic v2
• Database: PostgreSQL (or SQLite for dev)
• Migrations: Alembic
• Testing: pytest, pytest-asyncio
• Linting: ruff

Project Structure

Feature-based modular architecture - code organized by domain, not by layer: