* You can find the PodSpec tolerations that were created as annotations (if any) in a controller definition by doing `kubectl get <controller kind> <controller name> -o yaml` and looking for the "Annotation" section with the annotation key `scheduler.alpha.kubernetes.io/tolerations` (This will work whether you are running Kubernetes 1.5 or 1.6).

想了解更多关于 [Pydantic](https://docs.pydantic.dev/) 的信息，请查看其文档。

///

**FastAPI** 完全建立在 Pydantic 之上。

你会在[教程 - 用户指南](tutorial/index.md)中看到更多的实战示例。

## 带元数据注解的类型提示 { #type-hints-with-metadata-annotations }

Python 还提供了一个特性，可以使用 `Annotated` 在这些类型提示中放入额外的<dfn title="关于数据的数据，此处指关于类型的信息，例如描述。">元数据</dfn>。

你可以从 `typing` 导入 `Annotated`。

{* ../../docs_src/python_types/tutorial013_py310.py hl[1,4] *}

Remember I told you before that `Annotated` can be used to add metadata to your parameters in the [Python Types Intro](../python-types.md#type-hints-with-metadata-annotations)?

Now it's the time to use it with FastAPI. 🚀

We had this type annotation:

```Python
q: str | None = None
```

What we will do is wrap that with `Annotated`, so it becomes:

```Python
q: Annotated[str | None] = None
```

    contentSchema: Optional["SchemaOrBool"] = None
    # Ref: JSON Schema Validation 2020-12: https://json-schema.org/draft/2020-12/json-schema-validation.html#name-a-vocabulary-for-basic-meta
    # A Vocabulary for Basic Meta-Data Annotations
    title: str | None = None
    description: str | None = None
    default: Any | None = None
    deprecated: bool | None = None
    readOnly: bool | None = None
    writeOnly: bool | None = None

      "Derivative Works" shall mean any work, whether in Source or Object
      form, that is based on (or derived from) the Work and for which the
      editorial revisions, annotations, elaborations, or other modifications
      represent, as a whole, an original work of authorship. For the purposes
      of this License, Derivative Works shall not include works that remain

import static com.google.common.base.Preconditions.checkNotNull;

import com.google.common.annotations.GwtIncompatible;
import com.google.common.annotations.J2ktIncompatible;
import com.google.common.collect.ObjectArrays;
import com.google.errorprone.annotations.CanIgnoreReturnValue;
import java.util.AbstractQueue;
import java.util.Collection;
import java.util.ConcurrentModificationException;

import static java.util.Arrays.asList;
import static java.util.Collections.nCopies;
import static java.util.Collections.singletonList;
import static java.util.Collections.sort;

import com.google.common.annotations.GwtCompatible;
import com.google.common.collect.BoundType;
import com.google.common.collect.Iterators;
import com.google.common.collect.Multiset.Entry;
import com.google.common.collect.Multisets;

{
  "annotations": {
    "list": [
      {
        "builtIn": 1,
        "datasource": {
          "type": "datasource",
          "uid": "grafana"
        },
        "enable": true,
        "hide": true,
        "iconColor": "rgba(0, 211, 255, 1)",
        "name": "Annotations & Alerts",
        "type": "dashboard"
      }
    ]
  },
  "description": "MinIO Grafana Dashboard - https://min.io/",
  "editable": true,

///

## `q` 매개변수의 타입에 `Annotated` 사용하기 { #use-annotated-in-the-type-for-the-q-parameter }

이전에 [Python 타입 소개](../python-types.md#type-hints-with-metadata-annotations)에서 `Annotated`를 사용해 매개변수에 메타데이터를 추가할 수 있다고 말씀드린 것을 기억하시나요?

이제 FastAPI에서 사용할 차례입니다. 🚀

다음과 같은 타입 어노테이션이 있었습니다:

```Python
q: str | None = None
```

여기서 `Annotated`로 감싸서 다음과 같이 만듭니다:

```Python

        if (StringUtil.isNotBlank(msg)) {
            errors.offer(msg);
        }
    }

    /**
     * Command-line options container for the crawler application.
     * This class uses args4j annotations to define command-line arguments
     * and provides methods to parse and access configuration values.
     */
    public static class Options {