Add container usage to provided instance examples

docs/providers/provided_instance.rst

@@ -14,7 +14,7 @@ You can inject provided object attribute, item or result of its method call.
 
 .. literalinclude:: ../../examples/providers/provided_instance.py
    :language: python
-   :emphasize-lines: 26-32
+   :emphasize-lines: 28-34
    :lines: 3-
 
 To use the feature you should use the ``.provided`` attribute of the injected provider. This
@@ -32,7 +32,7 @@ You can do nested constructions:
 
 .. literalinclude:: ../../examples/providers/provided_instance_complex.py
    :language: python
-   :emphasize-lines: 24-30
+   :emphasize-lines: 26-32
    :lines: 3-
 
 The ``.provided`` attribute is available for the next providers:

examples/providers/provided_instance.py

@@ -1,6 +1,6 @@
 """Example of the injecting of provided instance attributes and items."""
 
-from dependency_injector import providers
+from dependency_injector import containers, providers
 
 
 class Service:
@@ -23,17 +23,21 @@ class Client:
         self.value4 = value4
 
 
-service = providers.Singleton(Service)
+class Container(containers.DeclarativeContainer):
 
-client_factory = providers.Factory(
+    service = providers.Singleton(Service)
+
+    client_factory = providers.Factory(
         Client,
         value1=service.provided[0],
         value2=service.provided.value,
         value3=service.provided.values[0],
         value4=service.provided.get_value.call(),
-)
+    )
 
 
 if __name__ == '__main__':
-    client = client_factory()
+    container = Container()
+
+    client = container.client_factory()
     assert client.value1 == client.value2 == client.value3 == 'foo'

examples/providers/provided_instance_complex.py

@@ -1,6 +1,6 @@
 """Complex example of the injecting of provided instance attributes and items."""
 
-from dependency_injector import providers
+from dependency_injector import containers, providers
 
 
 class Service:
@@ -12,31 +12,35 @@ class Service:
         return self.value
 
 
-service = providers.Singleton(Service, value=42)
+class Container(containers.DeclarativeContainer):
 
-dependency = providers.Object(
+    service = providers.Singleton(Service, value=42)
+
+    dependency = providers.Object(
         {
             'foo': {
                 'bar': 10,
                 'baz': lambda arg: {'arg': arg}
             },
         },
-)
+    )
 
-demo_list = providers.List(
+    demo_list = providers.List(
         dependency.provided['foo']['bar'],
         dependency.provided['foo']['baz'].call(22)['arg'],
         dependency.provided['foo']['baz'].call(service)['arg'],
         dependency.provided['foo']['baz'].call(service)['arg'].value,
         dependency.provided['foo']['baz'].call(service)['arg'].get_value.call(),
-)
+    )
 
 
 if __name__ == '__main__':
-    assert demo_list() == [
+    container = Container()
+
+    assert container.demo_list() == [
         10,
         22,
-        service(),
+        container.service(),
         42,
         42,
     ]

src/dependency_injector/providers.pyi

@@ -283,8 +283,8 @@ class Selector(Provider):
 
 
 class ProvidedInstanceFluentInterface:
-    def __getattr__(self, item: str) -> AttributeGetter: ...
-    def __getitem__(self, item: str) -> ItemGetter: ...
+    def __getattr__(self, item: Any) -> AttributeGetter: ...
+    def __getitem__(self, item: Any) -> ItemGetter: ...
     def call(self, *args: Injection, **kwargs: Injection) -> MethodCaller: ...