# 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`.

        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()

                        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']

        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')

        def apiElements = [attributes(Usage.JAVA_API, LibraryElements.JAR, 8),
                           attributes(Usage.JAVA_API, LibraryElements.CLASSES, 8)]
        def runtimeElements = [attributes(Usage.JAVA_RUNTIME, LibraryElements.JAR, 8),
                               attributes(Usage.JAVA_RUNTIME, LibraryElements.CLASSES, 8)]

        when:
        def candidates = [

		measurements. Compare only with other /cpu/classes metrics.

	/cpu/classes/gc/total:cpu-seconds
		Estimated total CPU time spent performing GC tasks. This metric
		is an overestimate, and not directly comparable to system CPU
		time measurements. Compare only with other /cpu/classes metrics.
		Sum of all metrics in /cpu/classes/gc.

	/cpu/classes/idle:cpu-seconds
		Estimated total available CPU time not spent executing

        List<Path> classes = dispatched.get(JavaPathType.CLASSES);
        List<Path> modules = dispatched.get(JavaPathType.MODULES);
        List<Path> unresolved = dispatched.get(PathType.UNRESOLVED);
        assertEquals(3, dispatched.size());
        assertEquals(1, unresolved.size());
        assertEquals(8, classes.size()); // "plexus.pom" and "junit.jar" are excluded.

        set.variants >> variants
        variant1.attributes >> typeAttributes("classes")
        variant1.artifacts >> variant1Artifacts
        variant2.attributes >> typeAttributes("jar")

        consumerSchema.withProducer(producerSchema) >> attributeMatcher
        attributeMatcher.matches(_ as Collection, typeAttributes("classes"), _ as AttributeMatchingExplanationBuilder) >> [variant1]

        expect: