@app.get("/") async def root(): return {"message": "Hello World"}
Only use PDFs dated within the last 12 months, or learn how to generate the latest version yourself (see Part 4). Part 3: The Best Free FastAPI Tutorial (Text-Based for PDF Conversion) Since you are looking for a PDF, let’s look at the most "print-friendly" free tutorial available. You can copy the following structure into a text file and convert it to PDF. This is a mini tutorial covering the absolute essentials. FastAPI Mini Tutorial (Version 0.100+) Chapter 1: Installation pip install fastapi uvicorn[standard] Chapter 2: First API (Hello World) Create main.py : fastapi tutorial pdf
Developers love FastAPI because of its automatic interactive documentation (Swagger UI), data validation via Pydantic, and asynchronous support. However, learning a framework often requires offline access. Whether you are commuting, working in a secure air-gapped environment, or simply prefer annotating physical or digital documents, the search for a is incredibly common. This is a mini tutorial covering the absolute essentials
However, remember that FastAPI’s superpower is its automatic interactive documentation . When you run uvicorn , you get a live, editable API sandbox at /docs . No PDF can replicate that. Whether you are commuting, working in a secure
Run: uvicorn main:app --reload @app.get("/items/{item_id}") async def read_item(item_id: int): return {"item_id": item_id} Note: item_id will be parsed as an integer automatically. Chapter 4: Query Parameters @app.get("/users/") async def list_users(skip: int = 0, limit: int = 10): return {"skip": skip, "limit": limit} Chapter 5: Request Body (Pydantic) from pydantic import BaseModel class Item(BaseModel): name: str price: float is_offer: bool = None
ENABLE_PDF_EXPORT=1 mkdocs build Look in the site/ folder. You should find pdf/fastapi-official.pdf .
pip install mkdocs-with-pdf Now, edit mkdocs.yml in the root directory. Add: