from fastapi import FastAPI
from pydantic import BaseModel

app = FastAPI()


class Item(BaseModel):
    name: str
    description: Union[str, None] = None
    price: float
    tax: float = 10.5
    tags: list[str] = []


items = {
    "foo": {"name": "Foo", "price": 50.2},
    "bar": {"name": "Bar", "description": "The bartenders", "price": 62, "tax": 20.2},

 * under the License.
 */
package org.apache.maven.repository.legacy;

import javax.inject.Inject;

import java.io.File;
import java.io.IOException;
import java.util.ArrayList;
import java.util.List;

import org.apache.maven.artifact.Artifact;
import org.apache.maven.artifact.DefaultArtifact;
import org.apache.maven.artifact.factory.ArtifactFactory;
import org.apache.maven.artifact.metadata.ArtifactMetadata;

## List of models

The same way, you can declare responses of lists of objects.

For that, use the standard Python `typing.List` (or just `list` in Python 3.9 and above):

//// tab | Python 3.9+

```Python hl_lines="18"
{!> ../../docs_src/extra_models/tutorial004_py39.py!}
```

import java.lang.reflect.AnnotatedElement;
import java.lang.reflect.Method;
import java.util.ArrayDeque;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.LinkedHashSet;
import java.util.List;
import java.util.Locale;
import java.util.Map;
import java.util.Queue;
import java.util.Set;

/**
 * Utilities for collecting and validating tester requirements from annotations.
 *

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.cling.invoker.mvnenc;

import java.io.InterruptedIOException;
import java.util.ArrayList;
import java.util.List;
import java.util.Map;

import org.apache.maven.api.cli.mvnenc.EncryptInvoker;
import org.apache.maven.api.cli.mvnenc.EncryptInvokerRequest;
import org.apache.maven.api.cli.mvnenc.EncryptOptions;

```

////

/// warning | "警告"

注意，使用 `convert_underscores = False` 要慎重，有些 HTTP 代理和服务器不支持使用带有下划线的请求头。

///

## 重复的请求头

有时，可能需要接收重复的请求头。即同一个请求头有多个值。

类型声明中可以使用 `list` 定义多个请求头。

使用 Python `list` 可以接收重复请求头所有的值。

例如，声明 `X-Token` 多次出现的请求头，可以写成这样：

//// tab | Python 3.10+

```Python hl_lines="9"
{!> ../../docs_src/header_params/tutorial003_an_py310.py!}
```

////

			}
			if c.shouldConnect() {
				should++
			}
		}
		if should < 10 {
			t.Errorf("host %q only connects to %d hosts", hosts[x], should)
		}
		t.Logf("host %q should connect to %d hosts", hosts[x], should)
	}
}

func startServer(t testing.TB, listener net.Listener, handler http.Handler) (server *httptest.Server) {
	t.Helper()