return objInfo, PreConditionFailed{}
		}
		if err != nil && !isErrVersionNotFound(err) && !isErrObjectNotFound(err) {
			return objInfo, err
		}

		// if object doesn't exist return error for If-Match conditional requests
		// If-None-Match should be allowed to proceed for non-existent objects
		if err != nil && opts.HasIfMatch && (isErrObjectNotFound(err) || isErrVersionNotFound(err)) {

		{"---", "", "", "", 0, ListObjectsInfo{}, BucketNameInvalid{Bucket: "---"}, false},
		{"ad", "", "", "", 0, ListObjectsInfo{}, BucketNameInvalid{Bucket: "ad"}, false},
		// Valid bucket names, but they do not exist (6-8).
		{"volatile-bucket-1", "", "", "", 1000, ListObjectsInfo{}, BucketNotFound{Bucket: "volatile-bucket-1"}, false},
		{"volatile-bucket-2", "", "", "", 1000, ListObjectsInfo{}, BucketNotFound{Bucket: "volatile-bucket-2"}, false},

<div class="termy">

```console
$ pip install -r requirements.txt
---> 100%
Successfully installed fastapi pydantic
```

</div>

/// info | Información

Existen otros formatos y herramientas para definir e instalar dependencias de paquetes.

///

### Crear el Código de **FastAPI** { #create-the-fastapi-code }

* Crea un directorio `app` y entra en él.

# 使用yield的依赖项

FastAPI支持在完成后执行一些<abbr title='有时也被称为"退出"("exit")，"清理"("cleanup")，"拆卸"("teardown")，"关闭"("close")，"上下文管理器"("context managers")。 ...'>额外步骤</abbr>的依赖项.

为此，你需要使用 `yield` 而不是 `return`，然后再编写这些额外的步骤（代码）。

/// tip | 提示

确保在每个依赖中只使用一次 `yield`。

///

/// note | 技术细节

任何一个可以与以下内容一起使用的函数：

	if err != nil {
		return 0, err
	}
	defer xhttp.DrainBody(respBody)
	n, err := io.ReadFull(respBody, buf)
	return int64(n), toStorageErr(err)
}

// ListDir - lists a directory.
func (client *storageRESTClient) ListDir(ctx context.Context, origvolume, volume, dirPath string, count int) (entries []string, err error) {
	values := grid.NewMSS()
	values.Set(storageRESTVolume, volume)

	letterIdxMax  = 63 / letterIdxBits   // # of letter indices fitting in 63 bits
)

// Random number state.
// We generate random temporary file names so that there's a good
// chance the file doesn't exist yet.
var (
	randN  uint32
	randmu sync.Mutex
)

// Temp files created in default Tmp dir
var globalTestTmpDir = os.TempDir()

// reseed - returns a new seed every time the function is called.

			if window > len(b[i:]) {
				window = len(b[i:])
			}
			// Fill the window with non-match
			for j := 0; j < window; j++ {
				b[i+j] = byte(100)
			}
			// Try to find something that doesn't exist
			p := Count(b[i:i+window], []byte{0})
			if p != 0 {
				t.Errorf("TestCountByteNoMatch(%q, 0) = %d", b[i:i+window], p)
			}
			for j := 0; j < window; j++ {
				b[i+j] = byte(0)
			}
		}
	}
}

rc1/alias/alias.go // Copyright 2018 The Go Authors. All rights reserved. // Use of this source code is governed by a BSD-style // license that can be found in the LICENSE file. // Package alias implements memory aliasing tests. // This code also exists as golang.org/x/crypto/internal/alias. package alias import "unsafe" // AnyOverlap reports whether x and y share memory at any (not necessarily // corresponding) index. The memory beyond the slice length is ignored. func AnyOverlap(x, y []byte) bool...

pkg syscall (darwin-386), const EDESTADDRREQ = 39
pkg syscall (darwin-386), const EDEVERR = 83
pkg syscall (darwin-386), const EDOM = 33
pkg syscall (darwin-386), const EDQUOT = 69
pkg syscall (darwin-386), const EEXIST = 17
pkg syscall (darwin-386), const EFAULT = 14
pkg syscall (darwin-386), const EFBIG = 27
pkg syscall (darwin-386), const EFTYPE = 79
pkg syscall (darwin-386), const EHOSTDOWN = 64

c7c/alias/alias.go // Copyright 2018 The Go Authors. All rights reserved. // Use of this source code is governed by a BSD-style // license that can be found in the LICENSE file. // Package alias implements memory aliasing tests. // This code also exists as golang.org/x/crypto/internal/alias. package alias import "unsafe" // AnyOverlap reports whether x and y share memory at any (not necessarily // corresponding) index. The memory beyond the slice length is ignored. func AnyOverlap(x, y []byte) bool...