## Additional Responses { #additional-responses }

You probably have seen how to declare the `response_model` and `status_code` for a *path operation*.

That defines the metadata about the main response of a *path operation*.

You can also declare additional responses with their models, status codes, etc.

    assertEqualCharNodes(Iterables.limit(result, 2), "ab");
    assertThat(graph.requestedNodes).containsExactly('a', 'a', 'b');

    // Iterate again to see if calculation is done again
    assertEqualCharNodes(Iterables.limit(result, 2), "ab");
    assertThat(graph.requestedNodes).containsExactly('a', 'a', 'a', 'b', 'b');
  }

  @Test

              case 1:
                return 1;
              case 2:
                return endOfData();
              default:
                throw new AssertionError("Should not have been invoked again");
            }
          }
        };

    assertTrue(iter.hasNext());
    assertEquals(0, (int) iter.next());

    // verify idempotence of hasNext()
    assertTrue(iter.hasNext());

              case 1:
                return 1;
              case 2:
                return endOfData();
              default:
                throw new AssertionError("Should not have been invoked again");
            }
          }
        };

    assertTrue(iter.hasNext());
    assertEquals(0, (int) iter.next());

    // verify idempotence of hasNext()
    assertTrue(iter.hasNext());

Notice that now we don't create a default instance `settings = Settings()`.

### The main app file { #the-main-app-file }

Now we create a dependency that returns a new `config.Settings()`.

{* ../../docs_src/settings/app02_an_py310/main.py hl[6,12:13] *}

/// tip

We'll discuss the `@lru_cache` in a bit.

For now you can assume `get_settings()` is a normal function.

	},
	ErrSTSNotInitialized: {
		Code:           "STSNotInitialized",
		Description:    "STS API not initialized, please try again.",
		HTTPStatusCode: http.StatusServiceUnavailable,
	},
	ErrSTSIAMNotInitialized: {
		Code:           "STSIAMNotInitialized",
		Description:    "STS IAM not initialized, please try again.",
		HTTPStatusCode: http.StatusServiceUnavailable,
	},
	ErrSTSUpstreamError: {
		Code:           "InternalError",

where it had been, it suddenly appeared again.

  `By-the-bye, what became of the baby?' said the Cat.  `I'd
nearly forgotten to ask.'

  `It turned into a pig,' Alice quietly said, just as if it had
come back in a natural way.

  `I thought it would,' said the Cat, and vanished again.

  Alice waited a little, half expecting to see it again, but it

        String[] returnedInputs = item.getInputs();

        // Modifying returned array should not affect original
        returnedInputs[0] = "modified";

        // Get again and verify not modified
        String[] inputs2 = item.getInputs();
        assertEquals("a", inputs2[0]);
        assertEquals("b", inputs2[1]);
        assertEquals("c", inputs2[2]);
    }

    @Test

2. The client connects to the idle daemon and sends it a request to do some work. If the daemon is no longer running, the client starts again.
3. If the daemon is not able to run the request, for example it is already running a request or is shutting down, it rejects the request. The client starts again.
4. The daemon runs the request, sending back data such as logging output or tooling API events and intermediate models while doing so.

{* ../../docs_src/python_types/tutorial004_py310.py hl[2] *}

## Declaring types { #declaring-types }

You just saw the main place to declare type hints. As function parameters.

This is also the main place you would use them with **FastAPI**.

### Simple types { #simple-types }

You can declare all the standard Python types, not only `str`.

You can use, for example: