Fastapi Tutorial Pdf 2021 -

FastAPI automatically hosts interactive documentation at the following endpoints:

What you likely want

: Keep route logic clean by outsourcing reusable components. Read /docs frequently : Test endpoints visually as you code. fastapi tutorial pdf

FastAPI makes it easy to capture data from the URL path or query string. Path Parameters

class Item(ItemBase): id: int class Config: orm_mode = True # allows reading from ORM objects Path Parameters class Item(ItemBase): id: int class Config:

from pydantic import BaseModel, Field class InventoryItem(BaseModel): name: str = Field(..., example="Wireless Mouse") description: str = Field(None, max_length=300) price: float = Field(..., gt=0, description="The price must be greater than zero") tax: float = None @app.post("/items/") async def create_item(item: InventoryItem): item_dict = item.dict() if item.tax: price_with_tax = item.price + item.tax item_dict.update("price_with_tax": price_with_tax) return item_dict Use code with caution. 5. Standard Responses and Error Handling

from fastapi import Header, HTTPException def verify_token(x_token: str = Header(...)): if x_token != "secret-token": raise HTTPException(status_code=400, detail="X-Token header invalid") return x_token @app.get("/secure-data/") def get_secure_data(token: str = Depends(verify_token)): return "message": "Access granted", "token": token Use code with caution. Best Practices for FastAPI Production Best Practices for FastAPI Production Render, Railway, Fly

Render, Railway, Fly.io, AWS (Lambda with Mangum), Google Cloud Run.

You can download a PDF version of this tutorial [here](insert link to PDF).

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To get started with FastAPI, you need Python installed on your machine. It is highly recommended to use a virtual environment to manage your dependencies.