---> 100%
```

</div>

當你用 `all` extras 安裝時，它也會一併包含在內：

<div class="termy">

```console
$ pip install "fastapi[all]"
---> 100%
```

</div>

### 建立 `Settings` 物件 { #create-the-settings-object }

從 Pydantic 匯入 `BaseSettings` 並建立子類別，與建立 Pydantic model 的方式非常類似。

就像使用 Pydantic model 一樣，你用型別註解宣告類別屬性，並可選擇性地提供預設值。

你可以使用與 Pydantic model 相同的所有驗證功能與工具，例如不同的資料型別與透過 `Field()` 進行額外驗證。

/// tip | Порада

Ви можете використовувати будь-яку іншу бібліотеку для SQL або NoSQL баз (інколи їх називають <abbr title="Object Relational Mapper - Об'єктно-реляційний відображувач: складний термін для бібліотеки, де деякі класи представляють таблиці SQL, а екземпляри представляють рядки в цих таблицях">"ORMs"</abbr>), FastAPI нічого не нав’язує. 😎

///

// Copyright (c) 2015-2024 MinIO, Inc.
//
// This file is part of MinIO Object Storage stack
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful

// Copyright (c) 2015-2023 MinIO, Inc.
//
// This file is part of MinIO Object Storage stack
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful

// Copyright (c) 2015-2021 MinIO, Inc.
//
// This file is part of MinIO Object Storage stack
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful

// Copyright (c) 2015-2021 MinIO, Inc.
//
// This file is part of MinIO Object Storage stack
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful

  // with the correct parameters.
  private static final int INITIAL_DELAY = 10;
  private static final int DELAY = 20;
  private static final TimeUnit UNIT = MILLISECONDS;

  // Unique runnable object used for comparison.
  @SuppressWarnings("AnonymousToLambda")
  final Runnable testRunnable =
      new Runnable() {
        @Override
        public void run() {}
      };

  boolean called = false;

  // with the correct parameters.
  private static final int INITIAL_DELAY = 10;
  private static final int DELAY = 20;
  private static final TimeUnit UNIT = MILLISECONDS;

  // Unique runnable object used for comparison.
  @SuppressWarnings("AnonymousToLambda")
  final Runnable testRunnable =
      new Runnable() {
        @Override
        public void run() {}
      };

  boolean called = false;

/// tip | İpucu

İstediğiniz başka bir SQL veya NoSQL veritabanı kütüphanesini kullanabilirsiniz (bazı durumlarda <abbr title="Object Relational Mapper - Obje-İlişkisel Eşleyici: bazı sınıfların SQL tablolarını ve örneklerin bu tablolardaki satırları temsil ettiği bir kütüphane için süslü bir terim">"ORMs"</abbr> olarak adlandırılır). FastAPI sizi hiçbir şeye zorlamaz. 😎

        }
        this.key = Arrays.copyOf(key, 16);
    }
    
    public byte[] getKey() {
        return Arrays.copyOf(key, 16);
    }
    
    @Override
    public boolean equals(Object obj) {
        if (obj instanceof Smb2LeaseKey) {
            return Arrays.equals(key, ((Smb2LeaseKey)obj).key);
        }
        return false;
    }
    
    @Override
    public int hashCode() {