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Module · 5 lessons
Getting Started with FastAPI
Build and run your first FastAPI app, explore the automatic interactive docs, and handle path and query parameters — then combine them into a small read-only API.
At a glance
Level
Beginner
Lessons
5 lessons
Time to complete
1 week
Cost
Free forever · no sign-up
Welcome to Getting Started with FastAPI, the first module of the course. Here you’ll go from zero to a working API. You’ll learn what FastAPI is and why it has become the most popular modern Python web framework, write and run your first app, and meet the feature that makes FastAPI so pleasant to work with: automatic, interactive documentation generated straight from your code.
From there you’ll learn the two ways every API reads input from a URL — path parameters (like /tasks/3) and query parameters (like /tasks?done=true) — and see how FastAPI uses ordinary Python type hints to parse and validate them for you. The module ends with a guided project: a small, read-only Task Manager API that you’ll grow into a complete application over the rest of the course.
Everything runs locally, and every example is real, runnable code. Start with Lesson 1, where you’ll see what makes FastAPI different.
Lessons in this module
1
What FastAPI Is and Why It's Fast
Meet FastAPI — the modern Python framework for building APIs — and see why type hints give you validation, JSON responses, and interactive docs for free.
2
Your First API
Install FastAPI, write your first app, run it with uvicorn, and explore the interactive docs FastAPI generates for you automatically.
3
Path Parameters
Read data from the URL path with path parameters — and let FastAPI convert and validate them from your type hints, rejecting bad values automatically.
4
Query Parameters
Read optional inputs from the URL query string — filters, pagination, flags — with defaults that make them optional and type hints that validate them.
5
Guided Project: Read-Only Task Manager API
Combine path params, query-param filters, and error handling into your first real API: a read-only Task Manager you'll grow across the whole course.
Achievement
Complete all 5 lessons to finish the Getting Started with FastAPI module.