Add stubs for the DependenciesContainer provider

src/dependency_injector/providers.pyi

@@ -55,6 +55,13 @@ class Dependency(Provider, Generic[T]):
 class ExternalDependency(Dependency): ...
 
 
+class DependenciesContainer(Object):
+    def __init__(self, **dependencies: Provider) -> None: ...
+    def __getattr__(self, name: str) -> Provider: ...
+    @property
+    def providers(self) -> Dict[str, Provider]: ...
+
+
 class Callable(Provider, Generic[T]):
     def __init__(self, provides: _Callable[..., T], *args: Injection, **kwargs: Injection) -> None: ...
     def __call__(self, *args: Injection, **kwargs: Injection) -> T: ...

tests/typing/dependencies_container.py

@@ -0,0 +1,10 @@
+from dependency_injector import providers
+
+
+# Test 1: to check the getattr type
+provider1 = providers.DependenciesContainer(
+    a=providers.Provider(),
+    b=providers.Provider(),
+)
+a1: providers.Provider = provider1.a
+b1: providers.Provider = provider1.b