{[]string{"", ""}, ""},
		{[]string{"a", "b"}, ""},
		{[]string{"a", "a"}, "a"},
		{[]string{"a/", "a/"}, "a/"},
		{[]string{"abcd/", ""}, ""},
		{[]string{"abcd/foo/", "abcd/bar/"}, "abcd/"},
		{[]string{"abcd/foo/bar/", "abcd/foo/bar/zoo"}, "abcd/foo/bar/"},
	}

	for i, test := range testCases {
		foundPrefix := lcp(test.prefixes, true)
		if foundPrefix != test.commonPrefix {

            "price": 42.0,
            "tax": 3.2,
            "tags": ["bar", "baz"],
        },
    )
    assert response.status_code == 200, response.text
    assert response.json() == {
        "name": "Foo",
        "description": "Item description",
        "price": 42.0,
        "tax": 3.2,
        "tags": IsList("bar", "baz", check_order=False),
    }

    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:

Якщо Ви взаємодієте з цією операцією шляху, надсилаючи два HTTP-заголовки, наприклад:

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

Відповідь буде така:

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

## Підсумок

Оголошуйте заголовки за допомогою `Header`, використовуючи той самий підхід, що й для `Query`, `Path` та `Cookie`.

from typing import Annotated

from fastapi import FastAPI, Query

app = FastAPI()


@app.get("/items/")
async def read_items(q: Annotated[list[str], Query()] = ["foo", "bar"]):
    query_items = {"q": q}

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

vous recevriez les valeurs des multiples paramètres de requête `q` (`foo` et `bar`) dans une `list` Python au sein de votre fonction de **path operation**, dans le paramètre de fonction `q`.

Donc la réponse de cette URL serait :

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

/// tip | Astuce

from fastapi import FastAPI, Query

app = FastAPI()


@app.get("/items/")
async def read_items(q: str = Query(min_length=3)):
    results = {"items": [{"item_id": "Foo"}, {"item_id": "Bar"}]}
    if q:
        results.update({"q": q})

from fastapi import FastAPI, Query

app = FastAPI()


@app.get("/items/")
async def read_items(q: str = Query(default="fixedquery", min_length=3)):
    results = {"items": [{"item_id": "Foo"}, {"item_id": "Bar"}]}
    if q:
        results.update({"q": q})

from typing import Annotated

from fastapi import FastAPI, Query

app = FastAPI()


@app.get("/items/")
async def read_items(q: Annotated[str, Query(min_length=3)]):
    results = {"items": [{"item_id": "Foo"}, {"item_id": "Bar"}]}
    if q:
        results.update({"q": q})