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docs/ko/docs/tutorial/body.md
``` 쿼리 매개변수를 선언할 때와 같이, 모델 어트리뷰트가 기본 값을 가지고 있어도 이는 필수가 아닙니다. 그외에는 필수입니다. 그저 `None`을 사용하여 선택적으로 만들 수 있습니다. 예를 들면, 위의 이 모델은 JSON "`object`" (혹은 파이썬 `dict`)을 다음과 같이 선언합니다: ```JSON { "name": "Foo", "description": "선택적인 설명란", "price": 45.2, "tax": 3.5 } ``` ...`description`과 `tax`는 (기본 값이 `None`으로 되어 있어) 선택적이기 때문에, 이 JSON "`object`"는 다음과 같은 상황에서도 유효합니다: ```JSON { "name": "Foo",
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docs/uk/docs/python-types.md
`Optional[Something]` насправді є скороченням для `Union[Something, None]`, вони еквівалентні. Це також означає, що в Python 3.10 ви можете використовувати `Something | None`: === "Python 3.8 і вище" ```Python hl_lines="1 4" {!> ../../../docs_src/python_types/tutorial009.py!}
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docs/em/docs/tutorial/metadata.md
``` 🚥 👆 💚 ❎ 🗄 🔗 🍕 👆 💪 ⚒ `openapi_url=None`, 👈 🔜 ❎ 🧾 👩💻 🔢 👈 ⚙️ ⚫️. ## 🩺 📛 👆 💪 🔗 2️⃣ 🧾 👩💻 🔢 🔌: * **🦁 🎚**: 🍦 `/docs`. * 👆 💪 ⚒ 🚮 📛 ⏮️ 🔢 `docs_url`. * 👆 💪 ❎ ⚫️ ⚒ `docs_url=None`. * **📄**: 🍦 `/redoc`. * 👆 💪 ⚒ 🚮 📛 ⏮️ 🔢 `redoc_url`. * 👆 💪 ❎ ⚫️ ⚒ `redoc_url=None`. 🖼, ⚒ 🦁 🎚 🍦 `/documentation` & ❎ 📄:
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docs/zh/docs/tutorial/body-updates.md
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docs/it/docs/index.md
app = FastAPI() class Item(BaseModel): name: str price: float is_offer: bool = Optional[None] @app.get("/") def read_root(): return {"Hello": "World"} @app.get("/items/{item_id}") def read_item(item_id: int, q: Optional[str] = None): return {"item_id": item_id, "q": q} @app.put("/items/{item_id}") def update_item(item_id: int, item: Item):
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docs/pt/docs/tutorial/query-params-str-validations.md
``` Note que substituímos o valor padrão de `None` para `Query(default=None)`, o primeiro parâmetro de `Query` serve para o mesmo propósito: definir o valor padrão do parâmetro. Então: ```Python q: Union[str, None] = Query(default=None) ``` ...Torna o parâmetro opcional, da mesma maneira que: ```Python q: Union[str, None] = None ``` Mas o declara explicitamente como um parâmetro de consulta.
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docs/ru/docs/tutorial/query-params-str-validations.md
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docs/de/docs/tutorial/query-params-str-validations.md
=== "Python 3.10+" ```Python q: str | None = None ``` === "Python 3.8+" ```Python q: Union[str, None] = None ``` Wir wrappen das nun in `Annotated`, sodass daraus wird: === "Python 3.10+" ```Python q: Annotated[str | None] = None ``` === "Python 3.8+" ```Python q: Annotated[Union[str, None]] = None ```
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docs/ru/docs/python-types.md
```Python hl_lines="1 4" {!../../../docs_src/python_types/tutorial009.py!} ``` Использование `Optional[str]` вместо просто `str` позволит редактору помочь вам в обнаружении ошибок, в которых вы могли бы предположить, что значение всегда является `str`, хотя на самом деле это может быть и `None`. #### Generic-типы
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docs/zh/docs/tutorial/query-params-str-validations.md
``` 由于我们必须用 `Query(default=None)` 替换默认值 `None`,`Query` 的第一个参数同样也是用于定义默认值。 所以: ```Python q: Union[str, None] = Query(default=None) ``` ...使得参数可选,等同于: ```Python q: str = None ``` 但是 `Query` 显式地将其声明为查询参数。 然后,我们可以将更多的参数传递给 `Query`。在本例中,适用于字符串的 `max_length` 参数: ```Python q: Union[str, None] = Query(default=None, max_length=50) ```
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