t.SkipNow()
	}

	dbDSN := os.Getenv("GORM_DSN")
	if dbDSN == "" {
		dbDSN = "gorm:gorm@tcp(localhost:9910)/gorm?charset=utf8&parseTime=True&loc=Local"
	}
	nativeDB, err := sql.Open("mysql", dbDSN)
	if err != nil {
		t.Fatalf("Should open db success, but got %v", err)
	}

	conn := &wrapperConnPool{
		db: nativeDB,
		expect: []string{
			"SELECT VERSION()",

import (
	"testing"

	"gorm.io/driver/mysql"

	"gorm.io/gorm"
)

func TestOpen(t *testing.T) {
	dsn := "gorm:gorm@tcp(localhost:9910)/gorm?loc=Asia%2FHongKong" // invalid loc
	_, err := gorm.Open(mysql.Open(dsn), &gorm.Config{})
	if err == nil {
		t.Fatalf("should returns error but got nil")
	}
}

func TestReturningWithNullToZeroValues(t *testing.T) {
	dialect := DB.Dialector.Name()
	switch dialect {

   * could perform a cast to LegacyConverter, but we can't because it's an internal-only class.
   *
   * TODO(cpovirk): So make it part of the open-source build, albeit package-private there?
   *
   * So we use uncheckedCastNullableTToT here. This is a weird usage of that method: The method is

{* ../../docs_src/events/tutorial003_py310.py hl[1,13] *}

Менеджер контекста в Python — это то, что можно использовать в операторе `with`. Например, `open()` можно использовать как менеджер контекста:

```Python
with open("file.txt") as file:
    file.read()
```

В последних версиях Python есть также асинхронный менеджер контекста. Его используют с `async with`:

```Python
async with lifespan(app):

			content []byte
		}
		files := []file{}

		for _, f := range r.File {
			fr, err := f.Open()
			if err != nil {
				continue
			}
			content, err := io.ReadAll(fr)
			if err != nil {
				continue
			}
			files = append(files, file{header: &f.FileHeader, content: content})
			if _, err := r.Open(f.Name); err != nil {
				continue
			}
		}

* HTTPS
* Replikation, mit Autoscaling basierend auf Requests
* usw.

FastAPI Cloud ist Hauptsponsor und Finanzierer der Open-Source-Projekte *FastAPI and friends*. ✨

## Bei anderen Cloudanbietern deployen { #deploy-to-other-cloud-providers }

FastAPI ist Open Source und basiert auf Standards. Sie können FastAPI-Apps bei jedem Cloudanbieter Ihrer Wahl deployen.

在這裡，`shutdown` 事件處理器函式會把一行文字 `"Application shutdown"` 寫入檔案 `log.txt`。

/// info

在 `open()` 函式中，`mode="a"` 表示「append（附加）」；也就是說，這行文字會加在檔案現有內容之後，而不會覆寫先前的內容。

///

/// tip

注意這裡我們使用的是標準 Python 的 `open()` 函式來操作檔案。

這涉及 I/O（輸入／輸出），也就是需要「等待」資料寫入磁碟。

但 `open()` 並不使用 `async` 與 `await`。

所以我們用一般的 `def` 來宣告事件處理器，而不是 `async def`。

///

	flag.PrintDefaults()
	os.Exit(2)
}

var wflag = flag.Bool("w", false, "write build ID")

func main() {
	log.SetPrefix("buildid: ")
	log.SetFlags(0)
	counter.Open()
	flag.Usage = usage
	flag.Parse()
	counter.Inc("buildid/invocations")
	counter.CountFlags("buildid/flag:", *flag.CommandLine)
	if flag.NArg() != 1 {
		usage()
	}

	file := flag.Arg(0)

# Swagger UI'yi Yapılandırın { #configure-swagger-ui }

Bazı ek [Swagger UI parametrelerini](https://swagger.io/docs/open-source-tools/swagger-ui/usage/configuration/) yapılandırabilirsiniz.

Bunları yapılandırmak için, `FastAPI()` uygulama nesnesini oluştururken ya da `get_swagger_ui_html()` fonksiyonuna `swagger_ui_parameters` argümanını verin.

`swagger_ui_parameters`, Swagger UI'ye doğrudan iletilecek yapılandırmaları içeren bir `dict` alır.

/// info | Bilgi

`open()` fonksiyonunda `mode="a"` "append" anlamına gelir; yani satır, önceki içeriği silmeden dosyada ne varsa onun sonuna eklenir.

///

/// tip | İpucu

Dikkat edin, bu örnekte bir dosyayla etkileşen standart Python `open()` fonksiyonunu kullanıyoruz.

Dolayısıyla disk’e yazılmasını beklemeyi gerektiren I/O (input/output) söz konusu.

Ancak `open()` `async` ve `await` kullanmaz.