そのため、サードパーティの ASGI ミドルウェアのドキュメントでは、おそらく次のように書かれているでしょう:

```Python
from unicorn import UnicornMiddleware

app = SomeASGIApp()

new_app = UnicornMiddleware(app, some_config="rainbow")
```

しかし FastAPI（正確には Starlette）は、内部ミドルウェアがサーバーエラーを処理し、カスタム例外ハンドラが正しく動作することを保証する、より簡単な方法を提供しています。

そのためには（CORS の例と同様に）`app.add_middleware()` を使います。

```Python
from fastapi import FastAPI
from unicorn import UnicornMiddleware

But we want to be able to parameterize that fixed content.

## A "callable" instance { #a-callable-instance }

In Python there's a way to make an instance of a class a "callable".

Not the class itself (which is already a callable), but an instance of that class.

To do that, we declare a method `__call__`:

entrypoint = "main:app"
```

這個 `entrypoint` 會告訴 `fastapi` 指令應該像這樣匯入 app：

```python
from main import app
```

如果你的程式碼結構是這樣：

```
.
├── backend
│   ├── main.py
│   ├── __init__.py
```

那麼你應該把 `entrypoint` 設為：

```toml
[tool.fastapi]
entrypoint = "backend.main:app"
```

這等同於：

```python
from backend.main import app
```

### 帶路徑的 `fastapi dev` { #fastapi-dev-with-path }

```Python
commons: Annotated[dict, Depends(common_parameters)]
```

しかし、`Annotated` を使用しているので、その `Annotated` 値を変数に格納して複数箇所で使えます:

{* ../../docs_src/dependencies/tutorial001_02_an_py310.py hl[12,16,21] *}

/// tip | 豆知識

これはただの標準 Python で、「type alias」と呼ばれ、**FastAPI** 固有のものではありません。

しかし **FastAPI** は `Annotated` を含む Python 標準に基づいているため、このテクニックをコードで使えます。 😎

///

      - name: Checkout repository
        uses: actions/checkout@8e8c483db84b4bee98b60c0593521ed34d9990e8 # v6.0.1
      - name: Build binary and run python tests
        shell: bash
        run: |
          CI_DOCKER_BUILD_EXTRA_PARAMS="--pull --build-arg py_major_minor_version=${{ matrix.pyver }} --build-arg is_nightly=1 --build-arg tf_project_name=tf_nightly_ci" \

    Read more about it in the
    [FastAPI docs for Simple OAuth2 with Password and Bearer](https://fastapi.tiangolo.com/tutorial/security/simple-oauth2/).

    ## Example

    ```python
    from typing import Annotated

    from fastapi import Depends, FastAPI
    from fastapi.security import OAuth2PasswordRequestForm

    app = FastAPI()


    @app.post("/login")

            This will be used to extract the data and for the generated OpenAPI.
            It is particularly useful when you can't use the name you want because it
            is a Python reserved keyword or similar.
            """
        ),
    ] = None,
    alias_priority: Annotated[
        int | None,
        Doc(
            """

    if not value or not should_convert(var,
                                       parsed_args.blacklist,
                                       parsed_args.whitelist_prefix):
      continue

    # In Python, MSYS, Linux-like paths are automatically read as Windows paths
    # with forward slashes, e.g. 'C:/Program Files', instead of
    # '/c/Program Files', thus becoming converted simply by virtue of having
    # been read.

```

#### Option B: Paste your code here or provide a link to a custom end-to-end colab

```
(You can paste links or attach files by dragging & dropping them below)
- Include code to invoke the TFLite Converter Python API and the errors.
- Provide links to your TensorFlow model and (optionally) TensorFlow Lite Model.
```

### 3. Failure after conversion

Examples:

Source (English):

//// tab | Python 3.8+ non-Annotated
Hello
////

Result (German):

//// tab | Python 3.8+ nicht annotiert
Hallo
////

Source (English) - Here there is nothing to translate in the tab title:

//// tab | Linux, macOS, Windows Bash
Hello again