# Globale Abhängigkeiten

Bei einigen Anwendungstypen möchten Sie möglicherweise Abhängigkeiten zur gesamten Anwendung hinzufügen.

Ähnlich wie Sie [`dependencies` zu den *Pfadoperation-Dekoratoren* hinzufügen](dependencies-in-path-operation-decorators.md){.internal-link target=_blank} können, können Sie sie auch zur `FastAPI`-Anwendung hinzufügen.

In diesem Fall werden sie auf alle *Pfadoperationen* in der Anwendung angewendet:

//// tab | Python 3.9+

package mountinfo

// mountInfo - This represents a single line in /proc/mounts.
type mountInfo struct {
	Device  string
	Path    string
	FSType  string
	Options []string
	Freq    string
	Pass    string
}

func (m mountInfo) String() string {
	return m.Path
}

// mountInfos - This represents the entire /proc/mounts.

                + "-Dclassifier=aClassifier -Dpackaging=jar -Dfile=/path/to/file" + LS + LS
                + "  Alternatively, if you host your own repository you can deploy the file there: " + LS
                + "      mvn deploy:deploy-file -DgroupId=aGroupId -DartifactId=anArtifactId"
                + " -Dversion=aVersion -Dclassifier=aClassifier -Dpackaging=jar -Dfile=/path/to/file"

import java.net.URL;
import java.net.URLClassLoader;

// TODO(b/65488446): Make this a public API.
/** Utility method to parse the system class path. */
final class ClassPathUtil {
  private ClassPathUtil() {}

  /**
   * Returns the URLs in the class path specified by the {@code java.class.path} {@linkplain
   * System#getProperty system property}.
   */
  // TODO(b/65488446): Make this a public API.
  static URL[] parseJavaClassPath() {

    constructed = false // The enclosed object written in block() is not constructed.
    path += name
    try {
      block(content)
      constructedBit = if (constructed) 0b0010_0000 else 0
      constructed = true // The enclosing object is constructed.
    } finally {
      stack.removeAt(stack.size - 1)
      path.removeAt(path.size - 1)
    }

    val sink = sink()

            }
        }
        ArrayList<Path> jars = new ArrayList<>();
        if (extClassPath != null && !extClassPath.isEmpty()) {
            for (String jar : extClassPath.split(File.pathSeparator)) {
                Path file = context.cwdResolver.apply(jar);
                context.logger.debug("  included '" + file + "'");
                jars.add(file);

	for i := range items {
		if err = enc.Encode(items[i]); err != nil {
			return err
		}
	}

	path := filepath.Join(store.directory, key.String())
	if key.Compress {
		err = os.WriteFile(path, s2.Encode(nil, buf.Bytes()), os.FileMode(0o770))
	} else {
		err = os.WriteFile(path, buf.Bytes(), os.FileMode(0o770))
	}

	buf.Reset()
	if err != nil {
		return err
	}

		tr := NewReader(&buf)
		h, err := tr.Next()
		if err != ErrInsecurePath {
			t.Errorf("tr.Next for file %q: got err %v, want ErrInsecurePath", path, err)
			continue
		}
		if h.Name != path {
			t.Errorf("tr.Next for file %q: got name %q, want %q", path, h.Name, path)
		}
		// Error should not be sticky.
		h, err = tr.Next()
		if err != nil {
			t.Errorf("tr.Next for file %q: got err %v, want nil", securePath, err)

     *
     * @since 4.0.0
     */
    MavenExecutionRequest setTopDirectory(Path topDirectory);

    /**
     * Gets the directory of the topmost project being built, usually the current directory or the
     * directory pointed at by the {@code -f/--file} command line argument.
     *
     * @since 4.0.0
     */
    Path getTopDirectory();

    /**
     * Sets the root directory of the project.
     *

///

```Python hl_lines="11-14"
{!> ../../docs_src/body_fields/tutorial001.py!}
```

////

`Field` funktioniert genauso wie `Query`, `Path` und `Body`, es hat die gleichen Parameter, usw.

/// note | "Technische Details"

Tatsächlich erstellen `Query`, `Path` und andere, die sie kennenlernen werden, Instanzen von Unterklassen einer allgemeinen Klasse `Param`, die ihrerseits eine Unterklasse von Pydantics `FieldInfo`-Klasse ist.