* 还有一个子目录 `app/internal/` 包含另一个 `__init__.py` 文件，因此它是又一个「Python 子包」：`app.internal`。
* `app/internal/admin.py` 是另一个子模块：`app.internal.admin`。

<img src="https://fastapi.tiangolo.com/img/tutorial/bigger-applications/package.drawio.svg">

带有注释的同一文件结构：

```
.
├── app                  # 「app」是一个 Python 包
│   ├── __init__.py      # 这个文件使「app」成为一个 Python 包
│   ├── main.py          # 「main」模块，例如 import app.main

# Bigger Applications - Multiple Files { #bigger-applications-multiple-files }

If you are building an application or a web API, it's rarely the case that you can put everything in a single file.

**FastAPI** provides a convenience tool to structure your application while keeping all the flexibility.

/// info

If you come from Flask, this would be the equivalent of Flask's Blueprints.

///

## An example file structure { #an-example-file-structure }

# Größere Anwendungen – mehrere Dateien { #bigger-applications-multiple-files }

Wenn Sie eine Anwendung oder eine Web-API erstellen, ist es selten der Fall, dass Sie alles in einer einzigen Datei unterbringen können.

**FastAPI** bietet ein praktisches Werkzeug zur Strukturierung Ihrer Anwendung bei gleichzeitiger Wahrung der Flexibilität.

/// info | Info

Wenn Sie von Flask kommen, wäre dies das Äquivalent zu Flasks Blueprints.

///

# Большие приложения, в которых много файлов { #bigger-applications-multiple-files }

При построении приложения или веб-API нам редко удается поместить всё в один файл.

**FastAPI** предоставляет удобный инструментарий, который позволяет нам структурировать приложение, сохраняя при этом всю необходимую гибкость.

/// info | Примечание

Если вы раньше использовали Flask, то это аналог шаблонов Flask (Flask's Blueprints).

///

# Aplicaciones más grandes - Múltiples archivos { #bigger-applications-multiple-files }

Si estás construyendo una aplicación o una API web, rara vez podrás poner todo en un solo archivo.

**FastAPI** proporciona una herramienta conveniente para estructurar tu aplicación manteniendo toda la flexibilidad.

/// info | Información

Si vienes de Flask, esto sería el equivalente a los Blueprints de Flask.

///

# Aplicações Maiores - Múltiplos Arquivos { #bigger-applications-multiple-files }

Se você está construindo uma aplicação ou uma API web, é raro que você possa colocar tudo em um único arquivo.

**FastAPI** oferece uma ferramenta conveniente para estruturar sua aplicação, mantendo toda a flexibilidade.

/// info | Informação

Se você vem do Flask, isso seria o equivalente aos Blueprints do Flask.

///

### Multiple Applications { #multiple-applications }

In the same server (or servers), there could be **multiple applications**, for example, other API programs or a database.

* do we need a sort of bus for application data
* do we need a dictionary for our applications like Apple does. We could easily hook into this and this is the model we need to follow. Following the model of apple applications the dictionary is what the REST URI should attach to. Not creating custom logic in the resource code.
* how many of our REST services do not map directory to a method in the application interface?

- an example of adding js

And the `items_per_user` would keep its default value of `50`.

## Settings in another module { #settings-in-another-module }

You could put those settings in another module file as you saw in [Bigger Applications - Multiple Files](../tutorial/bigger-applications.md){.internal-link target=_blank}.

For example, you could have a file `config.py` with:

{* ../../docs_src/settings/app01_py39/config.py *}

And then use it in a file `main.py`:

1. **Import your GSA configuration** using the method described above
2. **Update client applications** to use Fess's JSON Search API (see [API Reference](#api-reference) section)
3. **Gradually migrate** from GSA query format to Fess's native API