fastapi_pydantic_response_model_validation_quickstart.py

1from typing import List, Union
2
3from fastapi import FastAPI
4from pydantic import BaseModel, EmailStr
5
6app = FastAPI()
7
8
9class Item(BaseModel):
10    name: str
11    description: Union[str, None] = None
12    price: float
13    tax: Union[float, None] = None
14    tags: List[str] = []
15
16
17@app.post("/items/", response_model=Item)
18async def create_item(item: Item) -> Any:
19    return item
20
21
22@app.get("/items/", response_model=List[Item])
23async def read_items() -> Any:
24    return [
25        {"name": "Portal Gun", "price": 42.0},
26        {"name": "Plumbus", "price": 32.0},
27    ]