Si tienes bastante conocimiento técnico (coroutines, hilos, bloqueo, etc.) y tienes curiosidad sobre cómo FastAPI maneja `async def` vs `def` normal, adelante.

///

### Funciones de *path operation* { #path-operation-functions }

Cuando declaras una *path operation function* con `def` normal en lugar de `async def`, se ejecuta en un threadpool externo que luego es esperado, en lugar de ser llamado directamente (ya que bloquearía el servidor).

ame: "Gradle CodeQL Configuration"

paths-ignore:
  - "**/build/"

    response = client.get("/openapi.json")
    assert response.json() == snapshot(
        {
            "openapi": "3.1.0",
            "info": {"title": "FastAPI", "version": "0.1.0"},
            "paths": {
                "/": {
                    "post": {
                        "summary": "Post Root",
                        "operationId": "foo_post_root",
                        "requestBody": {

  override fun toString() = "input=$input output=$output"

  companion object {
    fun load(): List<WebPlatformToAsciiData> {
      val path = okHttpRoot / "okhttp/src/jvmTest/resources/web-platform-test-toascii.json"
      return SYSTEM_FILE_SYSTEM.read(path) {
        Json.decodeFromString<List<WebPlatformToAsciiData>>(readUtf8())
      }
    }
  }

        options.sessionId = "test-session";
        options.name = "test-name";
        options.propertiesPath = "/path/to/props";

        String expected = "Options [sessionId=test-session, name=test-name, propertiesPath=/path/to/props]";
        assertEquals(expected, options.toString());
    }

    // Test initializeProbes
    @Test
    public void test_initializeProbes() {

package cmd

import (
	"fmt"
	"os"
	"path"
	"path/filepath"
	"runtime"
	"sort"
	"testing"
)

// Test to check for different input arguments.
func TestReadDirFail(t *testing.T) {
	// Check non existent directory.
	if _, err := readDir("/tmp/non-existent-directory"); err != errFileNotFound {
		t.Fatalf("expected = %s, got: %s", errFileNotFound, err)
	}

	file := path.Join(os.TempDir(), "issue")

        asDocMeta().version(version);
    }

    @Override
    public String toString() {
        return "ThumbnailQueue [createdBy=" + createdBy + ", createdTime=" + createdTime + ", generator=" + generator + ", path=" + path
                + "]";
    }

import android.os.Build
import java.io.IOException
import okhttp3.internal.platform.PlatformRegistry
import okio.Source
import okio.source

internal class AssetPublicSuffixList(
  override val path: String = PUBLIC_SUFFIX_RESOURCE,
) : BasePublicSuffixList() {
  override fun listSource(): Source {
    val assets = PlatformRegistry.applicationContext?.assets

    if (assets == null) {

 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */
package org.apache.maven.cling.transfer;

import java.nio.file.Path;

import org.apache.maven.api.annotations.Nullable;
import org.eclipse.aether.transfer.TransferResource;

/**
 * Immutable identifier of a {@link TransferResource}.

```python
from backend.main import app
```

### `fastapi dev` with path { #fastapi-dev-with-path }

You can also pass the file path to the `fastapi dev` command, and it will guess the FastAPI app object to use:

```console
$ fastapi dev main.py
```

But you would have to remember to pass the correct path every time you call the `fastapi` command.