return z
}

// SetString interprets s as a number in the given base
// and sets z to that value.  The base must be in the range [2,36].
// SetString returns an error if s cannot be parsed or the base is invalid.
func (z *Int) SetString(s string, base int) error {
	z.doinit()
	if base < 2 || base > 36 {
		return os.ErrInvalid
	}
	p := C.CString(s)
	defer C.free(unsafe.Pointer(p))
	if C.mpz_set_str(&z.i[0], p, C.int(base)) < 0 {

                        <Array as="points">
                            <mxPoint x="390" y="-430"/>
                        </Array>
                    </mxGeometry>
                </mxCell>

                            <mxPoint x="340" y="480"/>
                        </Array>
                    </mxGeometry>
                </mxCell>

    assertEquals(13, stats.missCount());
    assertEquals(13.0 / 24, stats.missRate());
    assertEquals(17, stats.loadSuccessCount());
    assertEquals(19, stats.loadExceptionCount());
    assertEquals(19.0 / 36, stats.loadExceptionRate());
    assertEquals(17 + 19, stats.loadCount());
    assertEquals(23, stats.totalLoadTime());
    assertEquals(23.0 / (17 + 19), stats.averageLoadPenalty());
    assertEquals(27, stats.evictionCount());

                        <Array as="points">
                            <mxPoint x="390" y="-430"/>
                        </Array>
                    </mxGeometry>
                </mxCell>

### Top-level application

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

```Python hl_lines="3  6-8"
{!../../../docs_src/sub_applications/tutorial001.py!}
```

### Sub-application

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

	_ = x[HandlerDeletePolicy-31]
	_ = x[HandlerLoadPolicy-32]
	_ = x[HandlerLoadPolicyMapping-33]
	_ = x[HandlerDeleteServiceAccount-34]
	_ = x[HandlerLoadServiceAccount-35]
	_ = x[HandlerDeleteUser-36]
	_ = x[HandlerLoadUser-37]
	_ = x[HandlerLoadGroup-38]
	_ = x[HandlerHealBucket-39]
	_ = x[HandlerMakeBucket-40]
	_ = x[HandlerHeadBucket-41]
	_ = x[HandlerDeleteBucket-42]
	_ = x[HandlerGetMetrics-43]

### Eine *Pfadoperation* erstellen, um es zu testen

Um nun testen zu können, ob alles funktioniert, erstellen Sie eine *Pfadoperation*:

```Python hl_lines="36-38"
{!../../../docs_src/custom_docs_ui/tutorial001.py!}
```

### Es ausprobieren

                        <Array as="points">
                            <mxPoint x="390" y="-430"/>
                        </Array>
                    </mxGeometry>
                </mxCell>

如果需要两个独立的 FastAPI 应用，拥有各自独立的 OpenAPI 与文档，则需设置一个主应用，并**挂载**一个（或多个）子应用。

## 挂载 **FastAPI** 应用

**挂载**是指在特定路径中添加完全**独立**的应用，然后在该路径下使用*路径操作*声明的子应用处理所有事务。

### 顶层应用

首先，创建主（顶层）**FastAPI** 应用及其*路径操作*：

```Python hl_lines="3  6-8"
{!../../../docs_src/sub_applications/tutorial001.py!}
```

### 子应用

接下来，创建子应用及其*路径操作*。

子应用只是另一个标准 FastAPI 应用，但这个应用是被**挂载**的应用：

```Python hl_lines="11  14-16"