{* ../../docs_src/separate_openapi_schemas/tutorial001_py310.py ln[1:15] hl[14] *}

…тоді поле `description` не буде обов'язковим, адже воно має значення за замовчуванням `None`.

### Модель для введення в документації { #input-model-in-docs }

У документації ви побачите, що поле `description` не має **червоної зірочки** - воно не позначене як обов'язкове:

<div class="screenshot">

Bu modeli şöyle input olarak kullanırsanız:

{* ../../docs_src/separate_openapi_schemas/tutorial001_py310.py ln[1:15] hl[14] *}

...`description` alanı **zorunlu olmaz**. Çünkü `None` default değerine sahiptir.

### Dokümanlarda Input Modeli { #input-model-in-docs }

Bunu dokümanlarda da doğrulayabilirsiniz; `description` alanında **kırmızı yıldız** yoktur, yani required olarak işaretlenmemiştir:

<div class="screenshot">

        "name": "Foo",
        "price": 50.5,
        "description": None,
        "tax": None,
    }


def test_post_with_str_float(client: TestClient):
    response = client.post("/items/", json={"name": "Foo", "price": "50.5"})
    assert response.status_code == 200
    assert response.json() == {
        "name": "Foo",
        "price": 50.5,
        "description": None,
        "tax": None,
    }

from fastapi import FastAPI, Request

app = FastAPI(
    servers=[
        {"url": "https://stag.example.com", "description": "Staging environment"},
        {"url": "https://prod.example.com", "description": "Production environment"},
    ],
    root_path="/api/v1",
    root_path_in_servers=False,
)


@app.get("/app")
def read_main(request: Request):

name: Gopls bugs or feature requests
description: Issues or feature requests for the Go language server (gopls)
title: "x/tools/gopls: issue title"
labels: ["gopls", "Tools"]
body:
  - type: markdown
    attributes:
      value: "Please answer these questions before submitting your issue. Thanks!"
  - type: textarea
    id: gopls-version
    attributes:
      label: "gopls version"
      description: "Output of `gopls -v version` on the command line"

                        "summary": "Root",
                        "operationId": "root__get",
                        "responses": {
                            "200": {
                                "description": "Successful Response",
                                "content": {"application/json": {"schema": {}}},
                            }
                        },

from fastapi import FastAPI, File, UploadFile

app = FastAPI()


@app.post("/files/")
async def create_file(file: bytes = File(description="A file read as bytes")):
    return {"file_size": len(file)}


@app.post("/uploadfile/")
async def create_upload_file(
    file: UploadFile = File(description="A file read as UploadFile"),
):

        },
        "enable": true,
        "hide": true,
        "iconColor": "rgba(0, 211, 255, 1)",
        "name": "Annotations & Alerts",
        "type": "dashboard"
      }
    ]
  },
  "description": "MinIO Nodes Grafana Dashboard - https://min.io/",
  "editable": true,
  "fiscalYearStartMonth": 0,
  "gnetId": 15306,
  "graphTooltip": 0,
  "id": 267,
  "links": [
    {
      "icon": "external link",

from fastapi import FastAPI
from pydantic import BaseModel

app = FastAPI()


class Item(BaseModel):
    name: str
    description: str


items = [
    {"name": "Foo", "description": "There comes my hero"},
    {"name": "Red", "description": "It's my aeroplane"},
]


@app.get("/items/", response_model=list[Item])
async def read_items():

from pydantic import BaseModel

app = FastAPI()


class Item(BaseModel):
    name: str
    description: str | None = None
    price: float
    tax: float | None = None

    model_config = {
        "json_schema_extra": {
            "examples": [
                {
                    "name": "Foo",
                    "description": "A very nice Item",
                    "price": 35.4,
                    "tax": 3.2,