* simultaneously adopted and removed.
   */
  private val connections = ConcurrentLinkedQueue<RealConnection>()

  init {
    // Put a floor on the keep alive duration, otherwise cleanup will spin loop.
    require(keepAliveDuration > 0L) { "keepAliveDuration <= 0: $keepAliveDuration" }
  }

  fun idleConnectionCount(): Int =
    connections.count {

// Thin wrapper around a FunctionDef.
class GraphFunction : public AbstractFunction {
 public:
  explicit GraphFunction(FunctionDef fdef);
  ~GraphFunction() override;

  // GraphFunction maybe stay alive for the duration of the returned
  // FunctionDef.
  absl::Status GetFunctionDef(const FunctionDef** fdef) override;

  // Returns a shared reference to the wrapped function.

    assertThat(recorded.headers["Accept"]).isEqualTo("text/plain")
    assertThat(recorded.headers["Accept-Encoding"]).isEqualTo("gzip")
    assertThat(recorded.headers["Connection"]).isEqualTo("Keep-Alive")
    assertThat(recorded.headers["User-Agent"]!!).matches(Regex("okhttp/.*"))
  }

from fastapi import FastAPI, Response

app = FastAPI()


@app.get("/headers-and-object/")
def get_headers(response: Response):
    response.headers["X-Cat-Dog"] = "alone in the world"

def test_get(client: TestClient):
    response = client.get("/")
    assert response.json() == {"custom_field": [1.0, 2.0, 3.0]}


def test_typeadapter():
    # This test is only to confirm that Pydantic alone is working as expected
    from pydantic import (
        BaseModel,
        ConfigDict,
        PlainSerializer,
        TypeAdapter,
        WithJsonSchema,
    )

    class FakeNumpyArray:

Abhängig von Ihrem Anwendungsfall könnten Sie eine andere Bibliothek vorziehen, aber wenn Sie mich fragen würden, würde ich Ihnen wahrscheinlich empfehlen, **Strawberry** auszuprobieren.

Hier ist eine kleine Vorschau, wie Sie Strawberry mit FastAPI integrieren können:

{* ../../docs_src/graphql_/tutorial001_py310.py hl[3,22,25] *}

import org.apache.maven.logging.api.LogLevelRecorder;
import org.apache.maven.slf4j.MavenSimpleLogger;
import org.codehaus.plexus.PlexusContainer;
import org.jline.terminal.Terminal;
import org.jline.terminal.TerminalBuilder;
import org.jline.terminal.impl.AbstractPosixTerminal;
import org.jline.terminal.spi.TerminalExt;
import org.slf4j.LoggerFactory;
import org.slf4j.spi.LocationAwareLogger;

import static java.util.Objects.requireNonNull;

        String mavenUserConf = System.getProperty(Constants.MAVEN_USER_CONF);
        if (mavenUserConf != null) {
            return Paths.get(mavenUserConf, FILE_NAME);
        }
        // this means we are in UT or alike
        return Paths.get(System.getProperty("user.home"), ".m2", FILE_NAME);
    }

	// If resp.Body is not closed, the Client's underlying RoundTripper
	// (typically Transport) may not be able to reuse a persistent TCP
	// connection to the server for a subsequent "keep-alive" request.
	if respBody != nil {
		// Drain any remaining Body and then close the connection.
		// Without this closing connection would disallow re-using
		// the same connection for future uses.

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