You write standard Python with types:

```Python
from datetime import date

from pydantic import BaseModel

# Declare a variable as a str
# and get editor support inside the function
def main(user_id: str):
    return user_id


# A Pydantic model
class User(BaseModel):
    id: int
    name: str
    joined: date
```

{* ../../docs_src/settings/tutorial001_py310.py hl[18:20] *}

### Server'ı çalıştırın { #run-the-server }

Sonraki adımda server'ı çalıştırırken konfigürasyonları environment variable olarak geçersiniz; örneğin `ADMIN_EMAIL` ve `APP_NAME` şu şekilde ayarlanabilir:

<div class="termy">

```console
$ ADMIN_EMAIL="******@****.***" APP_NAME="ChimichangApp" fastapi run main.py

  }

  public void testWildcardSubtypes() throws Exception {
    new WildcardSubtypingTests().testAllDeclarations();
  }

  /**
   * This test reproduces the bug in canonicalizeWildcardType() when the type variable is
   * recursively bounded.
   */
  public void testRecursiveWildcardSubtypeBug() throws Exception {
    Exception e =
        assertThrows(

這意味著從環境變數中讀取的**任何值**在 Python 中都將是一個 `str`，任何型別轉換或驗證都必須在程式碼中完成。

你將在[進階使用者指南 - 設定和環境變數](./advanced/settings.md)中了解更多關於使用環境變數處理**應用程式設定**的資訊。

## `PATH` 環境變數 { #path-environment-variable }

有一個**特殊的**環境變數稱為 **`PATH`**，作業系統（Linux、macOS、Windows）用它來查找要執行的程式。

`PATH` 變數的值是一個長字串，由 Linux 和 macOS 上的冒號 `:` 分隔的目錄組成，而在 Windows 上則是由分號 `;` 分隔的。

例如，`PATH` 環境變數可能如下所示：

//// tab | Linux, macOS

    }

    @TaskAction
    public void checkDependencies() throws IOException, NoSuchAlgorithmException {
        if (dependencies == null) {
            throw new GradleException("No dependencies variable defined.");
        }

        if (dependencies.isEmpty()) {
            if (licensesDir.exists()) {
                throw new GradleException("Licenses dir " + licensesDir + " exists, but there are no dependencies");

        if (StringUtil.isBlank(projectId)) {
            throw new CrawlingAccessException(
                    "GCS project ID is blank. Please set the GCS_PROJECT_ID environment variable or projectId parameter.");
        }

        final StorageOptions.Builder builder = StorageOptions.newBuilder().setProjectId(projectId);

```Python
commons: Annotated[dict, Depends(common_parameters)]
```

Mais comme nous utilisons `Annotated`, nous pouvons stocker cette valeur `Annotated` dans une variable et l’utiliser à plusieurs endroits :

{* ../../docs_src/dependencies/tutorial001_02_an_py310.py hl[12,16,21] *}

/// tip | Astuce

GitHub'da FastAPI'ye "star" verebilirsiniz (sağ üstteki yıldız butonuna tıklayarak): [https://github.com/fastapi/fastapi](https://github.com/fastapi/fastapi). ⭐️

Yıldız verince, diğer kullanıcılar projeyi daha kolay bulabilir ve başkaları için de faydalı olduğunu görebilir.

## GitHub repository'sini release'ler için izleyin { #watch-the-github-repository-for-releases }

addition, we’ve introduced a new “soft” kind of node selector that is just a
hint to the scheduler; the scheduler will try to satisfy these requests but it
does not guarantee they will be satisfied. Both the “hard” and “soft” variants

	newConfig, err := loadTierConfig(ctx, objAPI)

	config.Lock()
	defer config.Unlock()

	switch err {
	case nil:
		break
	case errConfigNotFound: // nothing to reload
		// To maintain the invariance that lastRefreshedAt records the
		// timestamp of last successful refresh
		config.lastRefreshedAt = UTCNow()
		return nil
	default:
		return err
	}

	// Reset drivercache built using current config