## Retorna una `Response` directamente { #return-a-response-directly }

También puedes agregar headers cuando devuelves un `Response` directamente.

Crea un response como se describe en [Retorna un Response Directamente](response-directly.md){.internal-link target=_blank} y pasa los headers como un parámetro adicional:

```Python
contents = myfile.file.read()
```

/// note | `async` Technical Details

When you use the `async` methods, **FastAPI** runs the file methods in a threadpool and awaits for them.

///

/// note | Starlette Technical Details

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        Thanks for your interest in FastAPI! 🚀

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Erinnern Sie sich, dass Abhängigkeiten Unterabhängigkeiten haben können?

`get_current_user` wird seinerseits von `oauth2_scheme` abhängen, das wir zuvor erstellt haben.

So wie wir es zuvor in der *Pfadoperation* direkt gemacht haben, erhält unsere neue Abhängigkeit `get_current_user` von der Unterabhängigkeit `oauth2_scheme` einen `token` vom Typ `str`:

{* ../../docs_src/security/tutorial002_an_py310.py hl[25] *}

  /** Creates a new instance with the specified edge directionality. */
  private ValueGraphBuilder(boolean directed) {
    super(directed);
  }

  /** Returns a {@link ValueGraphBuilder} for building directed graphs. */
  public static ValueGraphBuilder<Object, Object> directed() {
    return new ValueGraphBuilder<>(true);
  }

  /** Returns a {@link ValueGraphBuilder} for building undirected graphs. */

 */
package jcifs.internal.smb2.rdma;

/**
 * Constants for RDMA capabilities and default configuration values.
 * Based on MS-SMBD specification for SMB Direct protocol.
 */
public class RdmaCapabilities {

    /**
     * RDMA transform capabilities flag indicating response is requested
     */
    public static final int SMB_DIRECT_RESPONSE_REQUESTED = 0x00000001;

import org.junit.Ignore;

/**
 * A generic JUnit test which tests {@code size()} operations on a map. Can't be invoked directly;
 * please see {@link com.google.common.collect.testing.MapTestSuiteBuilder}.
 *
 * @author George van den Driessche
 */
@GwtCompatible
@Ignore("test runners must not instantiate and run this directly, only via suites we build")
// @Ignore affects the Android test runner, which respects JUnit 4 annotations on JUnit 3 tests.

You can use the `TestClient` class to test FastAPI applications without creating an actual HTTP and socket connection, just communicating directly with the FastAPI code.

Read more about it in the [FastAPI docs for Testing](https://fastapi.tiangolo.com/tutorial/testing/).

You can import it directly from `fastapi.testclient`:

```python
from fastapi.testclient import TestClient
```

/**
 * A generic JUnit test which tests {@code contains()} operations on a collection. Can't be invoked
 * directly; please see {@link com.google.common.collect.testing.CollectionTestSuiteBuilder}.
 *
 * @author Kevin Bourrillion
 * @author Chris Povirk
 */
@GwtCompatible
@Ignore("test runners must not instantiate and run this directly, only via suites we build")

import org.junit.Ignore;

/**
 * A generic JUnit test which tests {@code retainAll} operations on a list. Can't be invoked
 * directly; please see {@link com.google.common.collect.testing.ListTestSuiteBuilder}.
 *
 * @author Chris Povirk
 */
@GwtCompatible
@Ignore("test runners must not instantiate and run this directly, only via suites we build")
// @Ignore affects the Android test runner, which respects JUnit 4 annotations on JUnit 3 tests.