[kubernetes-client-linux-386.tar.gz](https://dl.k8s.io/v1.29.15/kubernetes-client-linux-386.tar.gz) | 18250386b87c67851b9d3ef3ae7ab27c6ed2572234dac7479d4521ae59f2cb1fc358591d6603dadc4231eae9afa0fb523e9bb12bc06532a6f8fbf6ffb2181df6

[kubernetes-client-linux-386.tar.gz](https://dl.k8s.io/v1.32.8/kubernetes-client-linux-386.tar.gz) | d99d35c3802dbc42bd9ff95215fd69a1034f1d4000eeae95971d068994d3a90b9ac80e45f682b3a3bd5682f6209f7585e55460c884d1de6377bb6f38732a11d4

### Top-level application { #top-level-application }

First, create the main, top-level, **FastAPI** application, and its *path operations*:

{* ../../docs_src/sub_applications/tutorial001.py hl[3, 6:8] *}

### Sub-application { #sub-application }

Then, create your sub-application, and its *path operations*.

This sub-application is just another standard FastAPI application, but this is the one that will be "mounted":

    checkFromStringCase("[]bad", 1, null, 99, false);
  }

  public void testFromStringParseableNonsense() {
    // Examples of nonsense that gets through.
    checkFromStringCase("[[:]]", 86, "[:]", 86, false);
    checkFromStringCase("x:y:z", 87, "x:y:z", 87, false);
    checkFromStringCase("", 88, "", 88, false);
    checkFromStringCase(":", 99, "", 99, false);
    checkFromStringCase(":123", -1, "", 123, true);

    checkFromStringCase("[]bad", 1, null, 99, false);
  }

  public void testFromStringParseableNonsense() {
    // Examples of nonsense that gets through.
    checkFromStringCase("[[:]]", 86, "[:]", 86, false);
    checkFromStringCase("x:y:z", 87, "x:y:z", 87, false);
    checkFromStringCase("", 88, "", 88, false);
    checkFromStringCase(":", 99, "", 99, false);
    checkFromStringCase(":123", -1, "", 123, true);

### 최상단 응용프로그램

먼저, 메인, 최상단의 **FastAPI** 응용프로그램과 이것의 *경로 동작*을 생성합니다:

{* ../../docs_src/sub_applications/tutorial001.py hl[3, 6:8] *}

### 하위 응용프로그램

다음으로, 하위 응용프로그램과 이것의 *경로 동작*을 생성합니다:

이 하위 응용프로그램은 또 다른 표준 FastAPI 응용프로그램입니다. 다만 이것은 “마운트”될 것입니다:

{* ../../docs_src/sub_applications/tutorial001.py hl[11, 14:16] *}

### 하위 응용프로그램 마운트

	testErrors(t, "arm64", "arm64error")
}

func TestAMD64EndToEnd(t *testing.T) {
	testEndToEnd(t, "amd64", "amd64")
}

func Test386Encoder(t *testing.T) {
	testEndToEnd(t, "386", "386enc")
}

func TestAMD64Encoder(t *testing.T) {
	filenames := [...]string{
		"amd64enc",
		"amd64enc_extra",
		"avx512enc/aes_avx512f",
		"avx512enc/gfni_avx512f",
		"avx512enc/vpclmulqdq_avx512f",

	google.golang.org/genproto/googleapis/rpc v0.0.0-20250422160041-2d3770c4ea7f // indirect
	google.golang.org/grpc v1.72.0 // indirect
	google.golang.org/protobuf v1.36.6 // indirect

        message[32] = 112; // Offset
        message[33] = 0;
        message[34] = 0;
        message[35] = 0;

        // User (8 bytes "user" in Unicode at offset 124)
        message[36] = 8; // Length
        message[37] = 0;
        message[38] = 8; // Max Length
        message[39] = 0;
        message[40] = 124; // Offset
        message[41] = 0;
        message[42] = 0;

So we put them in their own `dependencies` module (`app/dependencies.py`).

We will now use a simple dependency to read a custom `X-Token` header:

//// tab | Python 3.9+

```Python hl_lines="3  6-8" title="app/dependencies.py"
{!> ../../docs_src/bigger_applications/app_an_py39/dependencies.py!}
```

////

//// tab | Python 3.8+

```Python hl_lines="1  5-7" title="app/dependencies.py"