///

Portanto, quando você cria uma instância da classe `Settings` (nesse caso, o objeto `settings`), o Pydantic lê as variáveis de ambiente sem diferenciar maiúsculas e minúsculas, por isso, uma variável maiúscula `APP_NAME` será usada para o atributo `app_name`.

Depois ele irá converter e validar os dados. Assim, quando você utilizar aquele objeto `settings`, os dados terão o tipo que você declarou (e.g. `items_per_user` será do tipo `int`).

///

Wenn Sie dann eine Instanz dieser `Settings`-Klasse erstellen (in diesem Fall als `settings`-Objekt), liest Pydantic die Umgebungsvariablen ohne Berücksichtigung der Groß- und Kleinschreibung. Eine Variable `APP_NAME` in Großbuchstaben wird also als Attribut `app_name` gelesen.

///

Then, when you create an instance of that `Settings` class (in this case, in the `settings` object), Pydantic will read the environment variables in a case-insensitive way, so, an upper-case variable `APP_NAME` will still be read for the attribute `app_name`.

Next it will convert and validate the data. So, when you use that `settings` object, you will have data of the types you declared (e.g. `items_per_user` will be an `int`).

### Use the `settings`

```

/// tip

🚥 👆 💚 🕳 ⏩ 📁 & 📋, 🚫 ⚙️ 👉 🖼, ⚙️ 🏁 1️⃣ 🔛.

///

⤴️, 🕐❔ 👆 ✍ 👐 👈 `Settings` 🎓 (👉 💼, `settings` 🎚), Pydantic 🔜 ✍ 🌐 🔢 💼-😛 🌌,, ↖-💼 🔢 `APP_NAME` 🔜 ✍ 🔢 `app_name`.

⏭ ⚫️ 🔜 🗜 & ✔ 💽. , 🕐❔ 👆 ⚙️ 👈 `settings` 🎚, 👆 🔜 ✔️ 📊 🆎 👆 📣 (✅ `items_per_user` 🔜 `int`).

### ⚙️ `settings`

⤴️ 👆 💪 ⚙️ 🆕 `settings` 🎚 👆 🈸:

```Python hl_lines="18-20"

  <uses-permission android:name="android.permission.INTERNET" />

  <application
    android:allowBackup="true"
    android:label="@string/app_name"
    android:supportsRtl="true"
    android:name=".TestApplication"
  >
    <activity
      android:name=".MainActivity"
      android:exported="true">
      <intent-filter>

<resources>
  <string name="app_name">android-test</string>

然后，它将转换和验证数据。因此，当您使用该 `settings` 对象时，您将获得您声明的类型的数据（例如 `items_per_user` 将为 `int` 类型）。

### 使用 `settings`

然后，您可以在应用程序中使用新的 `settings` 对象：

```Python hl_lines="18-20"
{!../../docs_src/settings/tutorial001.py!}
```

### 运行服务器

接下来，您将运行服务器，并将配置作为环境变量传递。例如，您可以设置一个 `ADMIN_EMAIL` 和 `APP_NAME`，如下所示：

<div class="termy">

#   * the main class name
#   * -classpath
#   * -D...appname settings
#   * --module-path (only if needed)
#   * DEFAULT_JVM_OPTS, JAVA_OPTS, and GRADLE_OPTS environment variables.

# For Cygwin or MSYS, switch paths to Windows format before running java
if "$cygwin" || "$msys" ; then
    APP_HOME=$( cygpath --path --mixed "$APP_HOME" )
    CLASSPATH=$( cygpath --path --mixed "$CLASSPATH" )

	io.Copy(c.App.Writer, versionBanner(c))
}

var debugNoExit = env.Get("_MINIO_DEBUG_NO_EXIT", "") != ""

// Main main for minio server.
func Main(args []string) {
	// Set the minio app name.
	appName := filepath.Base(args[0])

	if debugNoExit {
		freeze := func(_ int) {
			// Infinite blocking op
			<-make(chan struct{})
		}

		// Override the logger os.Exit()
		logger.ExitFunc = freeze

}  // namespace

absl::Status GradientRegistry::Register(
    const string& op_name, GradientFunctionFactory gradient_function_factory) {
  auto iter = registry_.find(op_name);
  if (iter != registry_.end()) {
    const string error_msg = "Gradient already exists for op: " + op_name + ".";
    return errors::AlreadyExists(error_msg);
  }
  registry_.insert({op_name, gradient_function_factory});
  return absl::OkStatus();
}