Fastapi Tutorial Pdf 👑

To start with FastAPI, you'll need to install it using pip:

pip install fastapi

You'll also need to install an ASGI server like uvicorn:

pip install uvicorn

from pydantic import Field
class User(BaseModel):
username: str = Field(..., min_length=3, max_length=20)
age: int = Field(..., ge=18, le=120)

Use Pydantic models:

from pydantic import BaseModel
class Item(BaseModel):
name: str
price: float
is_offer: bool = False   # default value
@app.post("/items/")
def create_item(item: Item):
return "item_name": item.name, "price_with_tax": item.price * 1.1

Combine parameters:

@app.put("/items/item_id")
def update_item(item_id: int, item: Item, q: str = None):
    return "item_id": item_id, "item": item, "query": q

FastAPI’s OAuth2PasswordBearer integrates with JWT libraries (e.g., python-jose). A typical flow:

Most comprehensive FastAPI tutorial PDFs include a full JWT example.

Create main.py:

from fastapi import FastAPI
app = FastAPI()
@app.get("/")
async def root():
return "message": "Hello World"

Run: uvicorn main:app --reload

The docs live in the docs/en/ folder. They are Markdown files. fastapi tutorial pdf

pip install mkdocs-material mkdocs-exclude