FastAPI January 2025 Presentation & Code Example

This repository contains the materials for the Cleveland Python Meetup presentation on FastAPI, held in January 2025. It includes a sample FastAPI application and the presentation slides.

Project Structure

• code_example/: A complete, working FastAPI application demonstrating CRUD operations with SQLModel.
• slides/: The Markdown source for the presentation slides (fastapi_presentation.md).

Code Example: Ingredients API

The code_example directory contains a simple API for managing a database of ingredients. It demonstrates core FastAPI features including:

• Pydantic models for data validation (Input/Output schemas).
• SQLModel for ORM (SQLite database).
• Dependency Injection for database sessions.
• CRUD endpoints (Create, Read, Update, Delete).

Prerequisites

• Python 3.14+
• uv (recommended for package management)

Setup & Running

1. Navigate to the code_example directory:

   cd code_example

2. Install dependencies using uv:

   uv sync

3. Run the application:

   uv run uvicorn main:app --reload

   The API will be available at http://127.0.0.1:8000.

4. Explore the interactive documentation:

   • Swagger UI: http://127.0.0.1:8000/docs
   • ReDoc: http://127.0.0.1:8000/redoc

Running Tests

To run the tests using pytest:

cd ./code_example/
PYTHONPATH=. uv run pytest

Presentation

The presentation covers:

• Introduction to FastAPI.
• Comparison with Django and Flask.
• Key features (Performance, Async, Type Hints, etc.).
• Best practices.

You can view the raw markdown in slides/fastapi_presentation.md.