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  1. docs_src/path_params_numeric_validations/tutorial001_py39.py

    from fastapi import FastAPI, Path, Query
    
    app = FastAPI()
    
    
    @app.get("/items/{item_id}")
    async def read_items(
        item_id: int = Path(title="The ID of the item to get"),
        q: Union[str, None] = Query(default=None, alias="item-query"),
    ):
        results = {"item_id": item_id}
        if q:
            results.update({"q": q})
    Created: Sun Dec 28 07:19:09 GMT 2025
    - Last Modified: Wed Dec 17 20:41:43 GMT 2025
    - 364 bytes
    - Click Count (0)
  2. docs_src/dependencies/tutorial001_02_an_py39.py

    from typing import Annotated, Union
    
    from fastapi import Depends, FastAPI
    
    app = FastAPI()
    
    
    async def common_parameters(
        q: Union[str, None] = None, skip: int = 0, limit: int = 100
    ):
        return {"q": q, "skip": skip, "limit": limit}
    
    
    CommonsDep = Annotated[dict, Depends(common_parameters)]
    
    
    @app.get("/items/")
    async def read_items(commons: CommonsDep):
        return commons
    
    
    @app.get("/users/")
    Created: Sun Dec 28 07:19:09 GMT 2025
    - Last Modified: Sat Mar 18 12:29:59 GMT 2023
    - 466 bytes
    - Click Count (0)
  3. docs_src/dependencies/tutorial001_py39.py

    from typing import Union
    
    from fastapi import Depends, FastAPI
    
    app = FastAPI()
    
    
    async def common_parameters(
        q: Union[str, None] = None, skip: int = 0, limit: int = 100
    ):
        return {"q": q, "skip": skip, "limit": limit}
    
    
    @app.get("/items/")
    async def read_items(commons: dict = Depends(common_parameters)):
        return commons
    
    
    @app.get("/users/")
    async def read_users(commons: dict = Depends(common_parameters)):
    Created: Sun Dec 28 07:19:09 GMT 2025
    - Last Modified: Wed Dec 17 20:41:43 GMT 2025
    - 442 bytes
    - Click Count (0)
  4. docs_src/query_params_str_validations/tutorial008_an_py310.py

    app = FastAPI()
    
    
    @app.get("/items/")
    async def read_items(
        q: Annotated[
            str | None,
            Query(
                title="Query string",
                description="Query string for the items to search in the database that have a good match",
                min_length=3,
            ),
        ] = None,
    ):
        results = {"items": [{"item_id": "Foo"}, {"item_id": "Bar"}]}
        if q:
            results.update({"q": q})
    Created: Sun Dec 28 07:19:09 GMT 2025
    - Last Modified: Tue Oct 24 20:26:06 GMT 2023
    - 498 bytes
    - Click Count (0)
  5. docs_src/pydantic_v1_in_v2/tutorial001_an_py39.py

    from typing import Union
    
    from pydantic.v1 import BaseModel
    
    
    class Item(BaseModel):
        name: str
        description: Union[str, None] = None
    Created: Sun Dec 28 07:19:09 GMT 2025
    - Last Modified: Wed Dec 17 20:41:43 GMT 2025
    - 156 bytes
    - Click Count (0)
  6. docs/ru/docs/tutorial/body.md

    /// note | Заметка
    
    FastAPI понимает, что значение `q` не является обязательным из-за значения по умолчанию `= None`.
    
    Аннотации типов `str | None` (Python 3.10+) или `Union[str, None]` (Python 3.9+) не используются FastAPI для определения обязательности; он узнает, что параметр не обязателен, потому что у него есть значение по умолчанию `= None`.
    
    Но добавление аннотаций типов позволит вашему редактору кода лучше вас поддерживать и обнаруживать ошибки.
    
    Created: Sun Dec 28 07:19:09 GMT 2025
    - Last Modified: Wed Dec 17 20:41:43 GMT 2025
    - 11.6K bytes
    - Click Count (0)
  7. tests/test_tutorial/test_dataclasses/test_tutorial001.py

        response = client.post("/items/", json={"name": "Foo", "price": 3})
        assert response.status_code == 200
        assert response.json() == {
            "name": "Foo",
            "price": 3,
            "description": None,
            "tax": None,
        }
    
    
    def test_post_invalid_item(client: TestClient):
        response = client.post("/items/", json={"name": "Foo", "price": "invalid price"})
        assert response.status_code == 422
    Created: Sun Dec 28 07:19:09 GMT 2025
    - Last Modified: Sat Dec 27 18:19:10 GMT 2025
    - 4.6K bytes
    - Click Count (0)
  8. docs/es/docs/tutorial/response-model.md

    Tu modelo de response podría tener valores por defecto, como:
    
    {* ../../docs_src/response_model/tutorial004_py310.py hl[9,11:12] *}
    
    * `description: Union[str, None] = None` (o `str | None = None` en Python 3.10) tiene un valor por defecto de `None`.
    * `tax: float = 10.5` tiene un valor por defecto de `10.5`.
    * `tags: List[str] = []` tiene un valor por defecto de una list vacía: `[]`.
    
    Created: Sun Dec 28 07:19:09 GMT 2025
    - Last Modified: Wed Dec 17 20:41:43 GMT 2025
    - 17.7K bytes
    - Click Count (0)
  9. docs/uk/docs/tutorial/query-params.md

    ## Необов'язкові параметри
    
    Аналогічно, Ви можете оголосити необов’язкові query параметри, встановивши для них значення за замовчуванням `None`:
    
    {* ../../docs_src/query_params/tutorial002_py310.py hl[7] *}
    
    У цьому випадку параметр функції `q` буде необов’язковим і за замовчуванням матиме значення `None`.
    
    /// check | Примітка
    
    Created: Sun Dec 28 07:19:09 GMT 2025
    - Last Modified: Sun Aug 31 10:29:01 GMT 2025
    - 7.2K bytes
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  10. docs_src/query_params_str_validations/tutorial010_an_py310.py

    async def read_items(
        q: Annotated[
            str | None,
            Query(
                alias="item-query",
                title="Query string",
                description="Query string for the items to search in the database that have a good match",
                min_length=3,
                max_length=50,
                pattern="^fixedquery$",
                deprecated=True,
            ),
        ] = None,
    ):
    Created: Sun Dec 28 07:19:09 GMT 2025
    - Last Modified: Tue Oct 24 20:26:06 GMT 2023
    - 622 bytes
    - Click Count (0)
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