read_root - Code Search

tests/test_response_model_invalid.py

        app = FastAPI()

        @app.get("/", response_model=NonPydanticModel)
        def read_root():
            pass  # pragma: nocover


def test_invalid_response_model_sub_type_raises():
    with pytest.raises(FastAPIError):
        app = FastAPI()

        @app.get("/", response_model=list[NonPydanticModel])
        def read_root():
            pass  # pragma: nocover

Created: Sun Apr 05 07:19:11 GMT 2026

- Last Modified: Wed Dec 17 21:25:59 GMT 2025

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github.com/tiangolo/fastapi

tests/test_openapi_cache_root_path.py

from fastapi import FastAPI
from fastapi.testclient import TestClient


def test_root_path_does_not_persist_across_requests():
    app = FastAPI()

    @app.get("/")
    def read_root():  # pragma: no cover
        return {"ok": True}

    # Attacker request with a spoofed root_path
    attacker_client = TestClient(app, root_path="/evil-api")
    response1 = attacker_client.get("/openapi.json")
    data1 = response1.json()

Created: Sun Apr 05 07:19:11 GMT 2026

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github.com/tiangolo/fastapi

tests/test_schema_ref_pydantic_v2.py

        ref: str = Field(validation_alias="$ref", serialization_alias="$ref")
        model_config = ConfigDict(validate_by_alias=True, serialize_by_alias=True)

    @app.get("/", response_model=ModelWithRef)
    async def read_root() -> Any:
        return {"$ref": "some-ref"}

    client = TestClient(app)
    return client


def test_get(client: TestClient):
    response = client.get("/")

Created: Sun Apr 05 07:19:11 GMT 2026

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github.com/tiangolo/fastapi

tests/test_computed_fields.py

        width: int
        length: int

        @computed_field
        @property
        def area(self) -> int:
            return self.width * self.length

    @app.get("/")
    def read_root() -> Rectangle:
        return Rectangle(width=3, length=4)

    @app.get("/responses", responses={200: {"model": Rectangle}})
    def read_responses() -> Rectangle:
        return Rectangle(width=3, length=4)

Created: Sun Apr 05 07:19:11 GMT 2026

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github.com/tiangolo/fastapi

docs/uk/docs/index.md

## Приклад { #example }

### Створіть { #create-it }

Створіть файл `main.py` з:

```Python
from fastapi import FastAPI

app = FastAPI()


@app.get("/")
def read_root():
    return {"Hello": "World"}


@app.get("/items/{item_id}")
def read_item(item_id: int, q: str | None = None):
    return {"item_id": item_id, "q": q}
```

<details markdown="1">

Created: Sun Apr 05 07:19:11 GMT 2026

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github.com/tiangolo/fastapi

docs/zh/docs/index.md

## 示例 { #example }

### 创建 { #create-it }

创建文件 `main.py`，内容如下：

```Python
from fastapi import FastAPI

app = FastAPI()


@app.get("/")
def read_root():
    return {"Hello": "World"}


@app.get("/items/{item_id}")
def read_item(item_id: int, q: str | None = None):
    return {"item_id": item_id, "q": q}
```

<details markdown="1">

Created: Sun Apr 05 07:19:11 GMT 2026

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github.com/tiangolo/fastapi

docs/de/docs/index.md

## Beispiel { #example }

### Erstellung { #create-it }

Erstellen Sie eine Datei `main.py` mit:

```Python
from fastapi import FastAPI

app = FastAPI()


@app.get("/")
def read_root():
    return {"Hello": "World"}


@app.get("/items/{item_id}")
def read_item(item_id: int, q: str | None = None):
    return {"item_id": item_id, "q": q}
```

<details markdown="1">

Created: Sun Apr 05 07:19:11 GMT 2026

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github.com/tiangolo/fastapi

docs/tr/docs/index.md

### Oluşturalım { #create-it }

Şu içerikle `main.py` adında bir dosya oluşturalım:

```Python
from fastapi import FastAPI

app = FastAPI()


@app.get("/")
def read_root():
    return {"Hello": "World"}


@app.get("/items/{item_id}")
def read_item(item_id: int, q: str | None = None):
    return {"item_id": item_id, "q": q}
```

<details markdown="1">

Created: Sun Apr 05 07:19:11 GMT 2026

- Last Modified: Fri Mar 20 07:53:17 GMT 2026

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github.com/tiangolo/fastapi

.github/DISCUSSION_TEMPLATE/questions.yml

      placeholder: |
        from fastapi import FastAPI

        app = FastAPI()


        @app.get("/")
        def read_root():
            return {"Hello": "World"}
      render: python
    validations:
      required: true
  - type: textarea
    id: description
    attributes:
      label: Description
      description: |

Created: Sun Apr 05 07:19:11 GMT 2026

- Last Modified: Thu Aug 03 15:59:41 GMT 2023

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github.com/tiangolo/fastapi

docs/ja/docs/index.md

## アプリケーション例 { #example }

### 作成 { #create-it }

`main.py` ファイルを作成し、以下のコードを入力します。

```Python
from fastapi import FastAPI

app = FastAPI()


@app.get("/")
def read_root():
    return {"Hello": "World"}


@app.get("/items/{item_id}")
def read_item(item_id: int, q: str | None = None):
    return {"item_id": item_id, "q": q}
```

<details markdown="1">

Created: Sun Apr 05 07:19:11 GMT 2026

- Last Modified: Fri Mar 20 14:07:17 GMT 2026

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