# Classes as Dependencies

Before diving deeper into the **Dependency Injection** system, let's upgrade the previous example.

## A `dict` from the previous example

In the previous example, we were returning a `dict` from our dependency ("dependable"):

=== "Python 3.10+"

    ```Python hl_lines="9"
    {!> ../../../docs_src/dependencies/tutorial001_an_py310.py!}
    ```

=== "Python 3.9+"

    ```Python hl_lines="11"

Aleksandr Andrukhov <******@****.***> 1705057939 +0300

## Klassen als Abhängigkeiten

Möglicherweise stellen Sie fest, dass Sie zum Erstellen einer Instanz einer Python-Klasse die gleiche Syntax verwenden.

Zum Beispiel:

```Python
class Cat:
    def __init__(self, name: str):
        self.name = name


fluffy = Cat(name="Mr Fluffy")
```

In diesem Fall ist `fluffy` eine Instanz der Klasse `Cat`.

     *
     * Starts at this class and capture all classes that reference this class and all classes and resources that were generated from this class.
     * Then does the same analysis for all classes that expose this class on their ABI recursively until no more new classes are discovered.
     */

        assertStateStored()
        result.assertTasksExecuted(":compileJava", ":processResources", ":classes", ":jar", ":compileTestJava", ":processTestResources", ":testClasses", ":test", ":assemble", ":check", ":build")
        def classFile = file("build/classes/java/main/Thing.class")
        classFile.isFile()
        def testClassFile = file("build/classes/java/test/ThingTest.class")
        testClassFile.isFile()

		Name: "/cpu/classes/gc/mark/dedicated:cpu-seconds",
		Description: "Estimated total CPU time spent performing GC tasks on " +
			"processors (as defined by GOMAXPROCS) dedicated to those tasks. " +
			"This metric is an overestimate, and not directly comparable to " +
			"system CPU time measurements. Compare only with other /cpu/classes " +
			"metrics.",
		Kind:       KindFloat64,
		Cumulative: true,
	},
	{

                    String value();
                }
            '''
        ])

        when:
        def clazz = api.classes.A
        def annotations = clazz.clazz.annotations
        def annClazz = api.classes.Ann
        def subAnnClazz = api.classes.SubAnn

        api.extractAndLoadApiClassFrom(subAnnClazz)
        def extractedAnn = api.extractAndLoadApiClassFrom(annClazz)

                        attributes { it.attribute(artifactType, 'classes') }
                    }
                    inputs.files view.files
                    doLast {
                        assert view.files.collect { it.name } == ['lib.classes', 'lib-util.classes', 'ui.classes', 'some-classes-1.0.classes']

        return value;
    }
}
"""
        List<File> classes = toSourceFile(clazz) + getConstants("int", "1")

        when:
        compiler.compile(classes)

        then:
        privateDependentToConstants["A"] == ["Constant1"] as Set
        accessibleDependentToConstants.isEmpty()
    }

    def "collect constants from inner classes"() {
        given:
        String clazz = """
class OuterClass {

        index.assertHasOverallResult("failures")

        index.assertHasFailedTest('classes/org.gradle.failing.SomeIgnoredSomePassedSomeFailed', 'failed')

        index.assertHasIgnoredTest('classes/org.gradle.ignoring.SomeIgnoredSomePassed', 'ignored')
        index.assertHasIgnoredTest('classes/org.gradle.failing.SomeIgnoredSomePassedSomeFailed', 'ignored')