}

    private static void configureCodeHighlightingAttributes(Map<String, Object> attributes) {
        attributes.put("source-highlighter", "highlight.js");
        //attributes.put("highlightjs-theme", "atom-one-dark");
        attributes.put("highlightjs-languages", "java,groovy,kotlin,toml,gradle,properties,text");
    }

type ListBucketsResponse struct {
	XMLName xml.Name `xml:"http://s3.amazonaws.com/doc/2006-03-01/ ListAllMyBucketsResult" json:"-"`

	Owner Owner

	// Container for one or more buckets.
	Buckets struct {
		Buckets []Bucket `xml:"Bucket"`
	} // Buckets are nested
}

// Upload container for in progress multipart upload
type Upload struct {
	Key          string

		t.Fatalf("Failed to auto migrate, but got error %v", err)
	}

	if !DB.Migrator().HasConstraint("migrate_people", "fk_migrate_people_manager") {
		t.Fatalf("Failed to find has one constraint between people and managers")
	}
}

func TestAutoMigrateNullable(t *testing.T) {
	type MigrateNullableColumn struct {
		ID    uint
		Bonus float64 `gorm:"not null"`
		Stock float64
	}

  values[0] = v;
  return TF_NewTensor(TF_FLOAT, nullptr, 0, values, num_bytes,
                      &FloatDeallocator, nullptr);
}

// All the *Helper methods are used as a workaround for the restrictions that
// one cannot call ASSERT_* methods in non-void-returning functions (when
// exceptions are disabled during compilation)
void PlaceholderHelper(TF_Graph* graph, TF_Status* s, const char* name,

	// JWT token for x-amz-security-token is signed with admin
	// secret key, temporary credentials become invalid if
	// server admin credentials change. This is done to ensure
	// that clients cannot decode the token using the temp
	// secret keys and generate an entirely new claim by essentially
	// hijacking the policies. We need to make sure that this is

		{mustNewSignedBadMD5Request(http.MethodPut, "http://127.0.0.1:9000/", 5, bytes.NewReader([]byte("hello")), t), ErrBadDigest},
		// When request is properly signed, error is none.
		{mustNewSignedRequest(http.MethodGet, "http://127.0.0.1:9000", 0, nil, t), ErrNone},
	}

	// Validates all testcases.
	for i, testCase := range testCases {

	}

	// To avoid all MinIO nodes reading the tier config object at the same
	// time.
	t := time.NewTimer(tierCfgRefresh + randInterval())
	defer t.Stop()
	for {
		select {
		case <-ctx.Done():
			return
		case <-t.C:
			err := config.Reload(ctx, objAPI)
			if err != nil {
				tierLogIf(ctx, err)
			}
		}
		t.Reset(tierCfgRefresh + randInterval())
	}
}

	if extractedExpect != expectedExpect {
		t.Errorf("expect header incorrect value: expected `%s`, got `%s`", expectedExpect, extractedExpect)
	}

	// case where the headers don't contain the one of the signed header in the signed headers list.
	signedHeaders = append(signedHeaders, "X-Amz-Credential")
	// expected to fail with `ErrUnsignedHeaders`.
	_, errCode = extractSignedHeaders(signedHeaders, r)

}

func ptr[T any](a T) *T {
	return &a
}

// sleepContext sleeps for d duration or until ctx is done.
func sleepContext(ctx context.Context, d time.Duration) error {
	select {
	case <-ctx.Done():
		return ctx.Err()
	case <-time.After(d):
	}
	return nil
}

// helper type to return either item or error.
type itemOrErr[V any] struct {

print(f"Hello {name} from Python")
```

/// tip

<a href="https://docs.python.org/3.8/library/os.html#os.getenv" class="external-link" target="_blank">`os.getenv()`</a> 的第二个参数是要返回的默认值。

如果没有提供默认值，默认为 `None`，此处我们提供了 `"World"` 作为要使用的默认值。

///

然后，您可以调用该 Python 程序：

<div class="termy">

```console
// 这里我们还没有设置环境变量
$ python main.py

// 因为我们没有设置环境变量，所以我们得到默认值

Hello World from Python