from fastapi import FastAPI, Query

app = FastAPI()


@app.get("/items/")
async def read_items(q: Annotated[Union[str, None], Query(alias="item-query")] = None):
    results = {"items": [{"item_id": "Foo"}, {"item_id": "Bar"}]}
    if q:
        results.update({"q": q})

    response = client.post(
        "/authors/foo/items/",
        json=[{"name": "Bar"}, {"name": "Baz", "description": "Drop the Baz"}],
    )
    assert response.status_code == 200
    assert response.json() == {
        "name": "foo",
        "items": [
            {"name": "Bar", "description": None},
            {"name": "Baz", "description": "Drop the Baz"},
        ],
    }

import pytest
from fastapi import Depends, FastAPI
from fastapi.responses import StreamingResponse
from fastapi.testclient import TestClient


class Session:
    def __init__(self) -> None:
        self.data = ["foo", "bar", "baz"]
        self.open = True

    def __iter__(self) -> Generator[str, None, None]:
        for item in self.data:
            if self.open:
                yield item
            else:

            project.getModel().addDependency(dependency);
        }

        @Override
        public void afterSessionStart(MavenSession session) {
            session.getUserProperties().setProperty("injected", "bar");
        }
    }

    public static class InjectReactorDependency extends AbstractMavenLifecycleParticipant {
        @Override
        public void afterProjectsRead(MavenSession session) {

    response = client.put(
        "/items/123",
        json={
            "name": "Foo",
            "description": "A very nice Item",
            "price": 35.4,
            "tax": 3.2,
            "tags": ["foo", "bar", "foo"],
            "image": {"url": "http://example.com/image.png", "name": "example image"},
        },
    )
    assert response.status_code == 200, response.text
    assert response.json() == {
        "item_id": 123,

아래와 같은 URL을 사용합니다:

```
http://localhost:8000/items/?q=foo&q=bar
```

여러 `q` *쿼리 매개변수* 값들을 (`foo` 및 `bar`) 파이썬 `list`로 *경로 작동 함수* 내 *함수 매개변수* `q`로 전달 받습니다.

따라서 해당 URL에 대한 응답은 다음과 같습니다:

```JSON
{
  "q": [
    "foo",
    "bar"
  ]
}
```

/// tip | 팁

from fastapi import FastAPI, Query

app = FastAPI()


@app.get("/items/")
async def read_items(q: str | None = Query(default=None, alias="item-query")):
    results = {"items": [{"item_id": "Foo"}, {"item_id": "Bar"}]}
    if q:
        results.update({"q": q})

{* ../../docs_src/header_params/tutorial003_an_py310.py hl[9] *}

If you communicate with that *path operation* sending two HTTP headers like:

```
X-Token: foo
X-Token: bar
```

The response would be like:

```JSON
{
    "X-Token values": [
        "bar",
        "foo"
    ]
}
```

## Recap { #recap }

Declare headers with `Header`, using the same common pattern as `Query`, `Path` and `Cookie`.

    assertUnescaped(e, '@');

    // Don't use plus for spaces
    assertEscaping(e, "%20", ' ');

    assertEquals("safe%20with%20spaces", e.escape("safe with spaces"));
    assertEquals("foo@bar.com", e.escape("foo@bar.com"));
  }

  private UrlEscaperTesting() {}

        self.fixed_content = fixed_content

    def __call__(self, q: str = ""):
        if q:
            return self.fixed_content in q
        return False


checker = FixedContentQueryChecker("bar")


@app.get("/query-checker/")
async def read_query_check(fixed_content_included: Annotated[bool, Depends(checker)]):