```

### 嵌套类型

有些容器数据结构可以包含其他的值，比如 `dict`、`list`、`set` 和 `tuple`。它们内部的值也会拥有自己的类型。

你可以使用 Python 的 `typing` 标准库来声明这些类型以及子类型。

它专门用来支持这些类型提示。

#### 列表

例如，让我们来定义一个由 `str` 组成的 `list` 变量。

从 `typing` 模块导入 `List`（注意是大写的 `L`）：

```Python hl_lines="1"
{!../../docs_src/python_types/tutorial006.py!}
```

同样以冒号（`:`）来声明这个变量。

输入 `List` 作为类型。

由于列表是带有"子类型"的类型，所以我们把子类型放在方括号中：

  <groupId>maven</groupId>
  <artifactId>p2</artifactId>
  <packaging>pom</packaging>
  <name>p2</name>
  <version>1.0</version>
  <mailingLists>
    <mailingList>
      <name>mailing-list</name>
    </mailingList>
  </mailingLists>

sources | indent 10 }} {{- end }} minio/templates/post-install-create-user-job.yaml {{- if .Values.users }} apiVersion: batch/v1 kind: Job metadata: name: {{ template "minio.fullname" . }}-make-user-job namespace: {{ .Release.Namespace | quote }} labels: app: {{ template "minio.name" . }}-make-user-job chart: {{ template "minio.chart" . }} release: {{ .Release.Name }} heritage: {{ .Release.Service }} annotations: "helm.sh/hook": post-install,post-upgrade "helm.sh/hook-delete-policy": hook-succee...

sources | indent 10 }} {{- end }} minio/templates/post-install-create-user-job.yaml {{- if .Values.users }} apiVersion: batch/v1 kind: Job metadata: name: {{ template "minio.fullname" . }}-make-user-job namespace: {{ .Release.Namespace | quote }} labels: app: {{ template "minio.name" . }}-make-user-job chart: {{ template "minio.chart" . }} release: {{ .Release.Name }} heritage: {{ .Release.Service }} annotations: "helm.sh/hook": post-install,post-upgrade "helm.sh/hook-delete-policy": hook-succee...

sources | indent 10 }} {{- end }} minio/templates/post-install-create-user-job.yaml {{- if .Values.users }} apiVersion: batch/v1 kind: Job metadata: name: {{ template "minio.fullname" . }}-make-user-job namespace: {{ .Release.Namespace | quote }} labels: app: {{ template "minio.name" . }}-make-user-job chart: {{ template "minio.chart" . }} release: {{ .Release.Name }} heritage: {{ .Release.Service }} annotations: "helm.sh/hook": post-install,post-upgrade "helm.sh/hook-delete-policy": hook-succee...

sources | indent 10 }} {{- end }} minio/templates/post-install-create-user-job.yaml {{- if .Values.users }} apiVersion: batch/v1 kind: Job metadata: name: {{ template "minio.fullname" . }}-make-user-job namespace: {{ .Release.Namespace | quote }} labels: app: {{ template "minio.name" . }}-make-user-job chart: {{ template "minio.chart" . }} release: {{ .Release.Name }} heritage: {{ .Release.Service }} annotations: "helm.sh/hook": post-install,post-upgrade "helm.sh/hook-delete-policy": hook-succee...

sources | indent 10 }} {{- end }} minio/templates/post-install-create-user-job.yaml {{- if .Values.users }} apiVersion: batch/v1 kind: Job metadata: name: {{ template "minio.fullname" . }}-make-user-job namespace: {{ .Release.Namespace | quote }} labels: app: {{ template "minio.name" . }}-make-user-job chart: {{ template "minio.chart" . }} release: {{ .Release.Name }} heritage: {{ .Release.Service }} annotations: "helm.sh/hook": post-install,post-upgrade "helm.sh/hook-delete-policy": hook-succee...

sources | indent 10 }} {{- end }} minio/templates/post-install-create-user-job.yaml {{- if .Values.users }} apiVersion: batch/v1 kind: Job metadata: name: {{ template "minio.fullname" . }}-make-user-job namespace: {{ .Release.Namespace | quote }} labels: app: {{ template "minio.name" . }}-make-user-job chart: {{ template "minio.chart" . }} release: {{ .Release.Name }} heritage: {{ .Release.Service }} annotations: "helm.sh/hook": post-install,post-upgrade "helm.sh/hook-delete-policy": hook-succee...

 * specific language governing permissions and limitations
 * under the License.
 */
package org.apache.maven.repository;

import javax.inject.Inject;

import java.util.Arrays;
import java.util.List;

import org.apache.maven.artifact.repository.ArtifactRepository;
import org.apache.maven.artifact.repository.layout.DefaultRepositoryLayout;
import org.apache.maven.repository.legacy.repository.ArtifactRepositoryFactory;

from fastapi import FastAPI, Query

app = FastAPI()


@app.get("/items/")
async def read_items(q: list[str] = Query(default=["foo", "bar"])):
    query_items = {"q": q}