* Und die Datei `app/internal/admin.py` ist ein weiteres Submodul: `app.internal.admin`.

<img src="/img/tutorial/bigger-applications/package.svg">

Die gleiche Dateistruktur mit Kommentaren:

```
.
├── app                  # „app“ ist ein Python-Package
│   ├── __init__.py      # diese Datei macht „app“ zu einem „Python-Package“

# Bigger Applications - Multiple Files

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

Let's say you have a file structure like this:

```
.
├── app

* 📤 📁 `app/internal/` ⏮️ ➕1️⃣ 📁 `__init__.py`, ⚫️ ➕1️⃣ "🐍 📦": `app.internal`.
*  & 📁 `app/internal/admin.py` ➕1️⃣ 🔁: `app.internal.admin`.

<img src="/img/tutorial/bigger-applications/package.svg">

🎏 📁 📊 ⏮️ 🏤:

```
.
├── app                  # "app" is a Python package
│   ├── __init__.py      # this file makes "app" a "Python package"

* 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.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

Ian Lance Taylor <******@****.***> 1681508172 -0700

Dmitri Shuralyov <******@****.***> 1697569678 -0400

Text.

  1. One
  999999999999999999999. Big
  1000000000000000000000. Bigger
  1000000000000000000001. Biggest

-- gofmt --
Text.

 1. One
 999999999999999999999. Big
 1000000000000000000000. Bigger
 1000000000000000000001. Biggest

-- text --
Text.

 1. One
 999999999999999999999. Big
 1000000000000000000000. Bigger
 1000000000000000000001. Biggest

-- markdown --
Text.

 1. One

## Dependencies for groups of *path operations*

	Children []Child
	ChildPtr *Child
	ChildToEmbed
}

const (
	emptyXML = `
<Parent>
    <I></I>
    <IPtr></IPtr>
    <Is></Is>
    <IPtrs></IPtrs>
    <F></F>
    <FPtr></FPtr>
    <Fs></Fs>
    <FPtrs></FPtrs>
    <B></B>
    <BPtr></BPtr>
    <Bs></Bs>
    <BPtrs></BPtrs>
    <Bytes></Bytes>
    <BytesPtr></BytesPtr>
    <S></S>
    <SPtr></SPtr>
    <Ss></Ss>

		imp := ForCompiler(fset, compiler, lookup)
		pkg, err := imp.Import("math/bigger")
		if err != nil {
			t.Fatal(err)
		}
		// Even though we open math/big.a, the import request was for math/bigger
		// and that should be recorded in pkg.Path(), at least for the gc toolchain.
		if pkg.Path() != "math/bigger" {
			t.Fatalf("Path() = %q, want %q", pkg.Path(), "math/bigger")
		}
	})