{* ../../docs_src/query_params_str_validations/tutorial002_an_py310.py hl[9] *}

Notice that the default value is still `None`, so the parameter is still optional.

But now, having `Query(max_length=50)` inside of `Annotated`, we are telling FastAPI that we want it to have **additional validation** for this value, we want it to have maximum 50 characters. 😎

/// tip

But it is still recommended to use the ideas above, using multiple classes, instead of these parameters.

This is because the JSON Schema generated in your app's OpenAPI (and the docs) will still be the one for the complete model, even if you use `response_model_include` or `response_model_exclude` to omit some attributes.

# nvidia driver to be installed.
nvidia-driver-580-open
# TODO(b/445248346): The Docker image shouldn't have cuda-compat installed.
# However, hermetic CUDA forward-compatibility mode is still missing some
# libraries.

    endsFirst.start()
    endsFirst.join()
    // First response is still waiting.
    assertThat(firstResponseCode.get()).isEqualTo(0)
    // Second response is done.
    assertThat(secondResponseCode.get()).isEqualTo(200)
    latch.countDown()
    startsFirst.join()
    // And now it's done!
    assertThat(firstResponseCode.get()).isEqualTo(200)
    // (Still done).
    assertThat(secondResponseCode.get()).isEqualTo(200)
  }

    /** Remote key for remote RDMA access */
    protected final int remoteKey;
    /** Virtual address of the memory region */
    protected final long address;
    /** Flag indicating if the memory region is still valid */
    protected volatile boolean valid;

    /**
     * Create new RDMA memory region
     *
     * @param buffer memory buffer to register
     * @param access access permissions
     */

test.db
log.txt
Pipfile.lock
env3.*
env
docs_build
site_build
venv
docs.zip
archive.zip

# vim temporary files
*~
.*.sw?
.cache

# macOS
.DS_Store

# Ignore while the setup still depends on requirements.txt files
uv.lock

Disallow: http://example.com:8080/path
Allow: /path:with:colons

# Case 4: Extra whitespace
User-agent:    ExtraSpaceBot
Disallow:     /spaced/
   Allow:   /also-spaced/

# Case 5: Mixed case directives (should still work)
UsEr-AgEnT: MixedCaseBot
DiSaLlOw: /test1/
AlLoW: /test2/
CrAwL-dElAy: 2
SiTeMaP: http://example.com/sitemap.xml

# Case 6: Comments in various positions
User-agent: CommentBot # inline comment

        // Read some data
        assertEquals('T', stream.read());

        // Close should be ignored
        stream.close();

        // Should still be able to read
        assertEquals('e', stream.read());
        assertEquals('s', stream.read());
        assertEquals('t', stream.read());
    }

    public void test_read_delegatesToUnderlying() throws IOException {

In the previous chapter the security system (which is based on the dependency injection system) was giving the *path operation function* a `token` as a `str`:

{* ../../docs_src/security/tutorial001_an_py39.py hl[12] *}

But that is still not that useful.

Let's make it give us the current user.

## Create a user model { #create-a-user-model }

First, let's create a Pydantic user model.

        // Even with batching disabled, getBatchLimit should return a value
        int limit = config.getBatchLimit("TreeConnectAndX.Transaction");
        assertTrue(limit >= 0, "Batch limit should still return a value even when batching is disabled");
    }

    /**
     * Test configuration when Unicode is disabled
     */
    @Test
    @DisplayName("Batch limit configuration with Unicode disabled")