### 😐 **FastAPI**

🥇, ✍ 🌐 👆 **FastAPI** 🈸 🛎:

```Python hl_lines="1  4  7-9"
{!../../../docs_src/extending_openapi/tutorial001.py!}
```

### 🏗 🗄 🔗

⤴️, ⚙️ 🎏 🚙 🔢 🏗 🗄 🔗, 🔘 `custom_openapi()` 🔢:

```Python hl_lines="2  15-20"

### Normales **FastAPI**

Schreiben Sie zunächst wie gewohnt Ihre ganze **FastAPI**-Anwendung:

```Python hl_lines="1  4  7-9"
{!../../../docs_src/extending_openapi/tutorial001.py!}
```

### Das OpenAPI-Schema generieren

Verwenden Sie dann dieselbe Hilfsfunktion, um das OpenAPI-Schema innerhalb einer `custom_openapi()`-Funktion zu generieren:

### Normal **FastAPI**

First, write all your **FastAPI** application as normally:

```Python hl_lines="1  4  7-9"
{!../../../docs_src/extending_openapi/tutorial001.py!}
```

### Generate the OpenAPI schema

Then, use the same utility function to generate the OpenAPI schema, inside a `custom_openapi()` function:

	/*1968*/ uint16(xSetOp), uint16(CVTTSD2SI),
	/*1970*/ uint16(xReadSlashR),
	/*1971*/ uint16(xArgR32),
	/*1972*/ uint16(xArgXmmM64),
	/*1973*/ uint16(xMatch),
	/*1974*/ uint16(xSetOp), uint16(CVTTSD2SI),
	/*1976*/ uint16(xReadSlashR),
	/*1977*/ uint16(xArgR32),
	/*1978*/ uint16(xArgXmmM64),
	/*1979*/ uint16(xMatch),
	/*1980*/ uint16(xCondDataSize), 1984, 1990, 0,

*path operation関数* のdocstringからOpenAPIに使用する行を制限することができます。

`\f` (「書式送り (Form Feed)」のエスケープ文字) を付与することで、**FastAPI** はOpenAPIに使用される出力をその箇所までに制限します。

ドキュメントには表示されませんが、他のツール (例えばSphinx) では残りの部分を利用できるでしょう。

```Python hl_lines="19-29"
{!../../../docs_src/path_operation_advanced_configuration/tutorial004.py!}

"13.7.17 UNIMPLEMENTED"
"13.7.18 UNIMPLEMENTED"
"13.7.2 UNIMPLEMENTED"
"13.7.3 UNIMPLEMENTED"
"13.7.4 UNIMPLEMENTED"
"13.7.5 UNIMPLEMENTED"
"13.7.6 UNIMPLEMENTED"
"13.7.7 UNIMPLEMENTED"
"13.7.8 UNIMPLEMENTED"
"13.7.9 UNIMPLEMENTED"
"2.1 OK"
"2.10 OK"
"2.11 OK"
"2.2 OK"
"2.3 OK"
"2.4 OK"
"2.5 OK"
"2.6 OK"
"2.7 OK"
"2.8 OK"
"2.9 OK"
"3.1 OK"
"3.2 NON-STRICT"
"3.3 NON-STRICT"

			5:  linksTo(1, 3, 4, 8, 10, 12),
			6:  nil,
			7:  linksTo(1, 12),
			8:  linksTo(5, 9, 11),
			9:  linksTo(1, 8, 12),
			10: linksTo(3, 4, 5),
			11: linksTo(2, 8),
			12: linksTo(1, 5, 7, 9),
		},

		// yellow cells
		complicated: []intset{
			0:  linksTo(2, 4),
			1:  linksTo(4, 8),
			2:  linksTo(0, 3, 4, 5, 8, 9),
			3:  linksTo(2, 8, 11),
			4:  linksTo(0, 1, 2, 8),

It won't show up in the documentation, but other tools (such as Sphinx) will be able to use the rest.

```Python hl_lines="19-29"
{!../../../docs_src/path_operation_advanced_configuration/tutorial004.py!}
```

## Additional Responses

You probably have seen how to declare the `response_model` and `status_code` for a *path operation*.

00000010  79 70 73 a9 7b 2c a8 0a  e5 f8 26 f3 eb 05 20 65  |yps.{,....&... e|
00000020  58 9b 0c 8e 28 3d c7 ee  cf 57 85 06 a5 d7 46     |X...(=...W....F|
>>> Flow 5 (client to server)
00000000  17 03 03 00 1a 2d 7a c5  d0 12 79 e8 a2 05 d3 a4  |.....-z...y.....|
00000010  51 80 8f 28 37 b9 75 64  f3 11 4c 78 de 0c f3 15  |Q..(7.ud..Lx....|
00000020  03 03 00 16 43 89 2c 8b  9e dc c5 5d 4c ca 7b 4e  |....C.,....]L.{N|

```
INFO: Sending request http://www.publicobject.com/helloworld.txt on null
User-Agent: OkHttp Example

INFO: Received response for https://publicobject.com/helloworld.txt in 1179.7ms
Server: nginx/1.4.6 (Ubuntu)
Content-Type: text/plain
Content-Length: 1759
Connection: keep-alive
```