if operation_id in operation_ids:
        message = (
            f"Duplicate Operation ID {operation_id} for function "
            + f"{route.endpoint.__name__}"
        )
        file_name = getattr(route.endpoint, "__globals__", {}).get("__file__")
        if file_name:
            message += f" at {file_name}"
        warnings.warn(message, stacklevel=1)
    operation_ids.add(operation_id)

```txt
Hello, World from Flask!
```

А если вы перейдёте по <a href="http://localhost:8000/v2" class="external-link" target="_blank">http://localhost:8000/v2</a>, вы увидите HTTP‑ответ от FastAPI:

```JSON
{
    "message": "Hello World"
}

        .writeByte(0b01111111)

    val derReader = DerReader(buffer)

    assertFailsWith<ProtocolException> {
      derReader.read("test") {}
    }.also { expected ->
      assertThat(expected.message).isEqualTo("invalid encoding for length")
    }
  }

  @Test fun `decode length not encoded in shortest form possible`() {
    val buffer =
      Buffer()
        .writeByte(0b00000010)

     * message}.
     */
    @Override
    public String getMessage() {
      // requireNonNull is safe because ExampleStackTrace sets a non-null message.
      StringBuilder message = new StringBuilder(requireNonNull(super.getMessage()));
      for (Throwable t = conflictingStackTrace; t != null; t = t.getCause()) {
        message.append(", ").append(t.getMessage());
      }

    subprocess.run(["git", "add", str(git_path)], check=True)
    print("Committing updated file")
    message = "🌐 Update translations"
    if language:
        message += f" for {language}"
    if command:
        message += f" ({command})"
    subprocess.run(["git", "commit", "-m", message], check=True)
    print("Pushing branch")
    subprocess.run(["git", "push", "origin", branch_name], check=True)

```txt
Hello, World from Flask!
```

并且如果您访问 <a href="http://localhost:8000/v2" class="external-link" target="_blank">http://localhost:8000/v2</a>，您将会看到由 FastAPI 返回的响应：

```JSON
{
    "message": "Hello World"
}

	AssociatedData Context
}

// MACRequest is a structure containing fields
// and options for generating message authentication
// codes (MAC).
type MACRequest struct {
	// Name is the name of the master key used decrypt
	// the ciphertext.
	Name string

	Version int

	Message []byte
}

// Metrics is a structure containing KMS metrics.
type Metrics struct {

def test_api(client: TestClient):
    response = client.get("/users/john")
    assert response.status_code == 200, response.text

                            "items": {
                                "anyOf": [{"type": "string"}, {"type": "integer"}]
                            },
                        },
                        "msg": {"title": "Message", "type": "string"},
                        "type": {"title": "Error Type", "type": "string"},
                    },
                },
                "HTTPValidationError": {

                            "items": {
                                "anyOf": [{"type": "string"}, {"type": "integer"}]
                            },
                        },
                        "msg": {"title": "Message", "type": "string"},
                        "type": {"title": "Error Type", "type": "string"},
                    },
                },
                "HTTPValidationError": {