diff --git a/README.rst b/README.rst
index c578d6f5..f164ba6e 100644
--- a/README.rst
+++ b/README.rst
@@ -1,28 +1,48 @@
 .. figure:: https://raw.githubusercontent.com/wiki/ets-labs/python-dependency-injector/img/logo.svg
+   :target: https://github.com/ets-labs/python-dependency-injector
 
 | 
 
 .. image:: https://img.shields.io/pypi/v/dependency_injector.svg
    :target: https://pypi.org/project/dependency-injector/
    :alt: Latest Version
+   
 .. image:: https://img.shields.io/pypi/l/dependency_injector.svg
    :target: https://pypi.org/project/dependency-injector/
    :alt: License
-.. image:: https://pepy.tech/badge/dependency-injector
-   :target: https://pepy.tech/project/dependency-injector
-   :alt: Downloads
+
 .. image:: https://img.shields.io/pypi/pyversions/dependency_injector.svg
    :target: https://pypi.org/project/dependency-injector/
    :alt: Supported Python versions
+   
 .. image:: https://img.shields.io/pypi/implementation/dependency_injector.svg
    :target: https://pypi.org/project/dependency-injector/
    :alt: Supported Python implementations
+
+.. image:: https://pepy.tech/badge/dependency-injector
+   :target: https://pepy.tech/project/dependency-injector
+   :alt: Downloads
+
+.. image:: https://pepy.tech/badge/dependency-injector/month
+   :target: https://pepy.tech/project/dependency-injector
+   :alt: Downloads
+
+.. image:: https://pepy.tech/badge/dependency-injector/week
+   :target: https://pepy.tech/project/dependency-injector
+   :alt: Downloads
+
+.. image:: https://img.shields.io/pypi/wheel/dependency-injector.svg
+   :target: https://pypi.org/project/dependency-injector/
+   :alt: Wheel
+
 .. image:: https://travis-ci.org/ets-labs/python-dependency-injector.svg?branch=master
    :target: https://travis-ci.org/ets-labs/python-dependency-injector
    :alt: Build Status
+   
 .. image:: http://readthedocs.org/projects/python-dependency-injector/badge/?version=latest
    :target: http://python-dependency-injector.ets-labs.org/
    :alt: Docs Status
+   
 .. image:: https://coveralls.io/repos/github/ets-labs/python-dependency-injector/badge.svg?branch=master
    :target: https://coveralls.io/github/ets-labs/python-dependency-injector?branch=master
    :alt: Coverage Status
@@ -30,370 +50,100 @@
 What is ``Dependency Injector``?
 ================================
 
-``Dependency Injector`` is a dependency injection microframework for Python.
-It was designed to be a unified and developer-friendly tool that helps
-implement a dependency injection design pattern in a formal, pretty, and
-Pythonic way.
+``Dependency Injector`` is a dependency injection framework for Python.
 
-The key features of the *Dependency Injector* framework are:
+Why do I need it?
+=================
 
-+ Easy, smart, and pythonic style.
-+ Obvious and clear structure.
-+ Extensibility and flexibility.
-+ High performance.
-+ Memory efficiency.
-+ Thread safety.
-+ Documented.
-+ Semantically versioned.
+``Dependency Injector`` helps you improve application structure.
 
-*Dependency Injector* containers and providers are implemented as C extension 
-types using Cython.
+With the ``Dependency Injector`` you keep **application structure in one place**.
+This place is called **the container**. You use the container to manage all the components of the application. All the component dependencies are defined explicitly. This provides the control on the application structure. It is **easy to understand and change** it.
+
+.. figure:: https://raw.githubusercontent.com/wiki/ets-labs/python-dependency-injector/img/di-map.svg
+   :target: https://github.com/ets-labs/python-dependency-injector
+
+*The container is like a map of your application. You always know what depends on what.*
+
+``Flask`` + ``Dependency Injector`` example:
+
+.. code-block:: python
+
+    from dependency_injector import containers, providers
+    from dependency_injector.ext import flask
+    from github import Github
+
+    from . import services, views
 
 
-Installation
-------------
+    class Application(containers.DeclarativeContainer):
+        """Application container."""
 
-The *Dependency Injector* library is available on `PyPi`_::
+        config = providers.Configuration()
+
+        github_client = providers.Factory(
+            Github,
+            login_or_token=config.github.auth_token,
+            timeout=config.github.request_timeout,
+        )
+
+        search_service = providers.Factory(
+            services.SearchService,
+            github_client=github_client,
+        )
+
+        index_view = providers.Callable(
+            views.index,
+            search_service=search_service,
+            default_search_term=config.search.default_term,
+            default_search_limit=config.search.default_limit,
+        )
+
+        app = providers.Factory(
+            flask.create_app,
+            name=__name__,
+            routes=[
+                flask.Route('/', view_provider=index_view),
+            ],
+        )
+
+
+See complete example here - `Flask + Dependency Injector Example <https://github.com/ets-labs/python-dependency-injector/tree/master/examples/miniapps/ghnav-flask>`_
+
+How to install?
+---------------
+
+- The package is available on the `PyPi`_::
 
     pip install dependency-injector
 
-Documentation
--------------
-
-The *Dependency Injector* documentation is hosted on ReadTheDocs:
-
-- `User's guide`_
-- `API docs`_
-
-Dependency injection
---------------------
-
-`Dependency injection`_ is a software design pattern that implements 
-`Inversion of control`_ to resolve dependencies. Formally, if object **A** 
-depends on object **B**, object **A** must not create or import object **B** 
-directly. Instead of this object **A** must provide a way to *inject* 
-object **B**. The responsibilities of objects creation and dependency
-injection are delegated to external code - the *dependency injector*. 
-
-Popular terminology of the dependency injection pattern:
-
-+ Object **A**, which depends on object **B**, is often called - 
-  the *client*.
-+ Object **B**, which is depended on, is often called - the *service*.
-+ External code that is responsible for creation of objects and injection 
-  of dependencies is often called - the *dependency injector*.
-
-There are several ways to inject a *service* into a *client*: 
-
-+ by passing it as an ``__init__`` argument (constructor / initializer
-  injection)
-+ by setting it as an attribute's value (attribute injection)
-+ by passing it as a method's argument (method injection)
-
-The dependency injection pattern has few strict rules that should be followed:
-
-+ The *client* delegates to the *dependency injector* the responsibility 
-  of injecting its dependencies - the *service(s)*.
-+ The *client* doesn't know how to create the *service*, it knows only 
-  the interface of the *service*. The *service* doesn't know that it is used by 
-  the *client*.
-+ The *dependency injector* knows how to create the *client* and 
-  the *service*. It also knows that the *client* depends on the *service*, 
-  and knows how to inject the *service* into the *client*.
-+ The *client* and the *service* know nothing about the *dependency injector*.
-
-The dependency injection pattern provides the following advantages: 
-
-+ Control of application structure.
-+ Decreased coupling of application components.
-+ Increased code reusability.
-+ Increased testability.
-+ Increased maintainability.
-+ Reconfiguration of a system without rebuilding.
-
-Example of dependency injection
--------------------------------
-
-Let's go through next example:
-
-.. image:: https://raw.githubusercontent.com/wiki/ets-labs/python-dependency-injector/img/engines_cars/diagram.png
-    :width: 100%
-    :align: center
-
-Listing of ``example.engines`` module:
-
-.. code-block:: python
-
-    """Dependency injection example, engines module."""
-
-
-    class Engine:
-        """Example engine base class.
-
-        Engine is a heart of every car. Engine is a very common term and could be
-        implemented in very different ways.
-        """
-
-
-    class GasolineEngine(Engine):
-        """Gasoline engine."""
-
-
-    class DieselEngine(Engine):
-        """Diesel engine."""
-
-
-    class ElectricEngine(Engine):
-        """Electric engine."""
-
-Listing of ``example.cars`` module:
-
-.. code-block:: python
-
-    """Dependency injection example, cars module."""
-
-
-    class Car:
-        """Example car."""
-
-        def __init__(self, engine):
-            """Initializer."""
-            self._engine = engine  # Engine is injected
-
-The next example demonstrates the creation of several cars with different engines:
-
-.. code-block:: python
-
-    """Dependency injection example, Cars & Engines."""
-
-    import example.cars
-    import example.engines
-
-
-    if __name__ == '__main__':
-        gasoline_car = example.cars.Car(example.engines.GasolineEngine())
-        diesel_car = example.cars.Car(example.engines.DieselEngine())
-        electric_car = example.cars.Car(example.engines.ElectricEngine())
-
-While the previous example demonstrates the advantages of dependency injection,
-there is a disadvantage demonstrated as well - the creation of a car requires 
-additional code to specify its dependencies. However, this disadvantage
-could be avoided by using a dependency injection framework for the creation of 
-an inversion of control container (IoC container).
-
-Here's an example of the creation of several inversion of control containers
-(IoC containers) using *Dependency Injector*:
-
-.. code-block:: python
-
-    """Dependency injection example, Cars & Engines IoC containers."""
-
-    import example.cars
-    import example.engines
-
-    import dependency_injector.containers as containers
-    import dependency_injector.providers as providers
-
-
-    class Engines(containers.DeclarativeContainer):
-        """IoC container of engine providers."""
-
-        gasoline = providers.Factory(example.engines.GasolineEngine)
-
-        diesel = providers.Factory(example.engines.DieselEngine)
-
-        electric = providers.Factory(example.engines.ElectricEngine)
-
-
-    class Cars(containers.DeclarativeContainer):
-        """IoC container of car providers."""
-
-        gasoline = providers.Factory(example.cars.Car,
-                                     engine=Engines.gasoline)
-
-        diesel = providers.Factory(example.cars.Car,
-                                   engine=Engines.diesel)
-
-        electric = providers.Factory(example.cars.Car,
-                                     engine=Engines.electric)
-
-
-    if __name__ == '__main__':
-        gasoline_car = Cars.gasoline()
-        diesel_car = Cars.diesel()
-        electric_car = Cars.electric()
-
-Dependency Injector structure
------------------------------
-
-*Dependency Injector* is a microframework and has a simple structure.
-
-There are two main entities: providers and containers.
-
-.. image:: https://raw.githubusercontent.com/wiki/ets-labs/python-dependency-injector/img/internals.png
-    :width: 100%
-    :align: center
-
-Providers
-~~~~~~~~~
-
-Providers describe strategies of accessing objects. They define how particular 
-objects are provided.
-
-- **Provider** - base provider class.
-- **Callable** - provider that calls a wrapped callable on every call. Supports 
-  positional and keyword argument injections.
-- **Factory** - provider that creates new instance of specified class on every 
-  call. Supports positional and keyword argument injections, as well as 
-  attribute injections.
-- **Singleton** - provider that creates new instance of specified class on its
-  first call and returns the same instance on every next call. Supports
-  position and keyword argument injections, as well as attribute injections.
-- **Object** - provider that returns provided instance "as is".
-- **ExternalDependency** - provider that can be useful for development of 
-  self-sufficient libraries, modules, and applications that require external
-  dependencies.
-- **Configuration** - provider that helps with implementing late static binding 
-  of configuration options - use first, define later.
-
-Containers
-~~~~~~~~~~
-
-Containers are collections of providers. The main purpose of containers is to 
-group providers.
-
-- **DeclarativeContainer** - is an inversion of control container that can be 
-  defined in a declarative manner. It covers most of the cases where a list of
-  providers that is be included in a container is deterministic 
-  (that means the container will not change its structure in runtime).
-- **DynamicContainer** - is an inversion of control container with a dynamic 
-  structure. It covers most of the cases where a  list of providers that 
-  would be included in container is non-deterministic and depends on  the
-  application's flow or its configuration (container's structure could be 
-  determined just after the application starts and might perform some initial 
-  work, like parsing a list of container providers from a configuration).
-
-Dependency Injector in action
------------------------------
-
-The brief example below is a simplified version of inversion of control 
-containers from a real-life application. The example demonstrates the usage
-of *Dependency Injector* inversion of control container and  providers for
-specifying application components and their dependencies on each other in one
-module. Besides other previously mentioned advantages, it shows a great
-opportunity to control and manage application's structure in one place.
-
-.. code-block:: python
-
-    """Example of dependency injection in Python."""
-
-    import logging
-    import sqlite3
-
-    import boto3
-
-    from dependency_injector import containers, providers
-    from example import services, main
-
-
-    class IocContainer(containers.DeclarativeContainer):
-        """Application IoC container."""
-
-        config = providers.Configuration('config')
-        logger = providers.Singleton(logging.Logger, name='example')
-
-        # Gateways
-
-        database_client = providers.Singleton(sqlite3.connect, config.database.dsn)
-
-        s3_client = providers.Singleton(
-            boto3.client, 's3',
-            aws_access_key_id=config.aws.access_key_id,
-            aws_secret_access_key=config.aws.secret_access_key,
-        )
-
-        # Services
-
-        users_service = providers.Factory(
-            services.UsersService,
-            db=database_client,
-            logger=logger,
-        )
-
-        auth_service = providers.Factory(
-            services.AuthService,
-            token_ttl=config.auth.token_ttl,
-            db=database_client,
-            logger=logger,
-        )
-
-        photos_service = providers.Factory(
-            services.PhotosService,
-            db=database_client,
-            s3=s3_client,
-            logger=logger,
-        )
-
-        # Misc
-
-        main = providers.Callable(
-            main.main,
-            users_service=users_service,
-            auth_service=auth_service,
-            photos_service=photos_service,
-        )
-
-The next example demonstrates a run of the example application defined above:
-
-.. code-block:: python
-
-    """Run example of dependency injection in Python."""
-
-    import sys
-    import logging
-
-    from container import IocContainer
-
-
-    if __name__ == '__main__':
-        # Configure container:
-        container = IocContainer(
-            config={
-                'database': {
-                    'dsn': ':memory:',
-                },
-                'aws': {
-                    'access_key_id': 'KEY',
-                    'secret_access_key': 'SECRET',
-                },
-                'auth': {
-                    'token_ttl': 3600,
-                },
-            }
-        )
-        container.logger().addHandler(logging.StreamHandler(sys.stdout))
-
-        # Run application:
-        container.main(*sys.argv[1:])
-
-You can find more *Dependency Injector* examples in the ``/examples`` directory
-on our GitHub:
-
-    https://github.com/ets-labs/python-dependency-injector
-
-Feedback & Support
+Where is the docs?
 ------------------
 
-Feel free to post questions, bugs, feature requests, proposals, etc. on
-the *Dependency Injector*  GitHub issues page:
+- The documentation is available on the `Read The Docs <http://python-dependency-injector.ets-labs.org/>`_
 
-    https://github.com/ets-labs/python-dependency-injector/issues
+Have a question?
+----------------
 
-Your feedback is quite important!
+- Open a `Github Issue <https://github.com/ets-labs/python-dependency-injector/issues>`_
+
+Found a bug?
+------------
+
+- Open a `Github Issue <https://github.com/ets-labs/python-dependency-injector/issues>`_
+
+Want to help?
+-------------
+
+- ⭐️ Star the ``Dependency Injector`` on the `Github <https://github.com/ets-labs/python-dependency-injector/>`_
+- 🆕 Start a new project with the ``Dependency Injector``
+- 💬 Tell your friend about the ``Dependency Injector``
 
 
-.. _Dependency injection: http://en.wikipedia.org/wiki/Dependency_injection
-.. _Inversion of control: https://en.wikipedia.org/wiki/Inversion_of_control
+Want to contribute?
+-------------------
+
+- 🔀 Fork the project
+- ⬅️ Open a pull request to the ``develop`` branch
+
 .. _PyPi: https://pypi.org/project/dependency-injector/
-.. _User's guide: http://python-dependency-injector.ets-labs.org/
-.. _API docs: http://python-dependency-injector.ets-labs.org/api/
diff --git a/docs/api/flaskext.rst b/docs/api/flaskext.rst
new file mode 100644
index 00000000..12a9ecbf
--- /dev/null
+++ b/docs/api/flaskext.rst
@@ -0,0 +1,9 @@
+``dependency_injector.ext.flask``
+---------------------------------
+
+.. automodule:: dependency_injector.ext.flask
+   :members:
+   :special-members:
+
+
+.. disqus::
diff --git a/docs/api/index.rst b/docs/api/index.rst
index 132cdd5d..738ec7a0 100644
--- a/docs/api/index.rst
+++ b/docs/api/index.rst
@@ -8,3 +8,4 @@ API Documentation
     providers
     containers
     errors
+    flaskext
diff --git a/docs/index.rst b/docs/index.rst
index a1b65e9f..d4f3aa45 100644
--- a/docs/index.rst
+++ b/docs/index.rst
@@ -1,6 +1,6 @@
-======================================================================
-Dependency Injector --- Dependency injection microframework for Python
-======================================================================
+=================================================================
+Dependency Injector --- Dependency injection framework for Python
+=================================================================
 
 .. meta::
    :google-site-verification: 6it89zX0_wccKEhAqbAiYQooS95f0BA8YfesHk6bsNA
@@ -22,24 +22,43 @@ Dependency Injector --- Dependency injection microframework for Python
 .. image:: https://img.shields.io/pypi/v/dependency_injector.svg
    :target: https://pypi.org/project/dependency-injector/
    :alt: Latest Version
+
 .. image:: https://img.shields.io/pypi/l/dependency_injector.svg
    :target: https://pypi.org/project/dependency-injector/
    :alt: License
-.. image:: https://pepy.tech/badge/dependency-injector
-   :target: https://pepy.tech/project/dependency-injector
-   :alt: Downloads
+
 .. image:: https://img.shields.io/pypi/pyversions/dependency_injector.svg
    :target: https://pypi.org/project/dependency-injector/
    :alt: Supported Python versions
+
 .. image:: https://img.shields.io/pypi/implementation/dependency_injector.svg
    :target: https://pypi.org/project/dependency-injector/
    :alt: Supported Python implementations
+
+.. image:: https://pepy.tech/badge/dependency-injector
+   :target: https://pepy.tech/project/dependency-injector
+   :alt: Downloads
+
+.. image:: https://pepy.tech/badge/dependency-injector/month
+   :target: https://pepy.tech/project/dependency-injector
+   :alt: Downloads
+
+.. image:: https://pepy.tech/badge/dependency-injector/week
+   :target: https://pepy.tech/project/dependency-injector
+   :alt: Downloads
+
+.. image:: https://img.shields.io/pypi/wheel/dependency-injector.svg
+   :target: https://pypi.org/project/dependency-injector/
+   :alt: Wheel
+
 .. image:: https://travis-ci.org/ets-labs/python-dependency-injector.svg?branch=master
    :target: https://travis-ci.org/ets-labs/python-dependency-injector
    :alt: Build Status
+
 .. image:: http://readthedocs.org/projects/python-dependency-injector/badge/?version=latest
    :target: http://python-dependency-injector.ets-labs.org/
    :alt: Docs Status
+
 .. image:: https://coveralls.io/repos/github/ets-labs/python-dependency-injector/badge.svg?branch=master
    :target: https://coveralls.io/github/ets-labs/python-dependency-injector?branch=master
    :alt: Coverage Status
diff --git a/docs/main/changelog.rst b/docs/main/changelog.rst
index efee2e3d..ddd1ada4 100644
--- a/docs/main/changelog.rst
+++ b/docs/main/changelog.rst
@@ -7,6 +7,13 @@ that were made in every particular version.
 From version 0.7.6 *Dependency Injector* framework strictly 
 follows `Semantic versioning`_
 
+3.20.0
+------
+- Add ``Flask`` integration module ``dependency_injector.flask.ext``.
+- Add ``Flask`` + ``Dependency Injector`` example ``ghnav-flask``.
+- Add ``Factory.provides`` attribute. It is an alias to the ``Factory.cls``.
+- New README.
+
 3.19.2
 ------
 - Add logo.
diff --git a/examples/.pydocstylerc b/examples/.pydocstylerc
index f9c55352..eda12aa0 100644
--- a/examples/.pydocstylerc
+++ b/examples/.pydocstylerc
@@ -1,2 +1,2 @@
 [pydocstyle]
-ignore = D101,D203,D213
+ignore = D101,D103,D107,D203,D213
diff --git a/examples/miniapps/ghnav-flask/README.rst b/examples/miniapps/ghnav-flask/README.rst
new file mode 100644
index 00000000..699e420a
--- /dev/null
+++ b/examples/miniapps/ghnav-flask/README.rst
@@ -0,0 +1,90 @@
+Flask Dependency Injection Example
+==================================
+
+Application ``githubnavigator`` is a `Flask <https://flask.palletsprojects.com/>`_ +
+`Dependency Injector <http://python-dependency-injector.ets-labs.org/>`_ application.
+
+Run
+---
+
+Install requirements:
+
+.. code-block:: bash
+
+    pip install -r requirements.txt
+
+To run the application do:
+
+.. code-block:: bash
+
+    export FLASK_APP=githubnavigator.entrypoint
+    export FLASK_ENV=development
+    flask run
+
+The output should be something like:
+
+.. code-block::
+
+    * Serving Flask app "githubnavigator.entrypoint" (lazy loading)
+    * Environment: development
+    * Debug mode: on
+    * Running on http://127.0.0.1:5000/ (Press CTRL+C to quit)
+    * Restarting with fsevents reloader
+    * Debugger is active!
+    * Debugger PIN: 473-587-859
+
+After that visit http://127.0.0.1:5000/ in your browser.
+
+.. note::
+
+
+   Github has a rate limit. When thre rate limit is exceed you will see an exception
+   ``github.GithubException.RateLimitExceededException``. For unauthenticated requests, the rate
+   limit allows for up to 60 requests per hour. To extend the limit to 5000 requests per hour you
+   need to set personal access token.
+
+   It's easy:
+
+   - Follow this `guide <https://docs.github.com/en/github/authenticating-to-github/creating-a-personal-access-token>`_ to create a token.
+   - Set a token to the environment variable:
+
+   .. code-block:: bash
+
+      export GITHUB_TOKEN=<your token>
+
+   - Restart the app with ``flask run``
+
+   `Read more on Github rate limit <https://developer.github.com/v3/#rate-limiting>`_
+
+Test
+----
+
+This application comes with unit tests.
+
+To run the tests do:
+
+.. code-block:: bash
+
+   py.test githubnavigator/tests.py --cov=githubnavigator
+
+The output should be something like:
+
+.. code-block::
+
+   platform darwin -- Python 3.8.3, pytest-5.4.3, py-1.9.0, pluggy-0.13.1
+   plugins: flask-1.0.0, cov-2.10.0, asyncio-0.14.0
+   collected 2 items
+
+   githubnavigator/tests.py ..                                     [100%]
+
+   ---------- coverage: platform darwin, python 3.8.3-final-0 -----------
+   Name                             Stmts   Miss  Cover
+   ----------------------------------------------------
+   githubnavigator/__init__.py          0      0   100%
+   githubnavigator/application.py      10      0   100%
+   githubnavigator/entrypoint.py        5      5     0%
+   githubnavigator/services.py         13      0   100%
+   githubnavigator/tests.py            38      0   100%
+   githubnavigator/views.py             7      0   100%
+   ----------------------------------------------------
+   TOTAL                               73      5    93%
diff --git a/examples/miniapps/ghnav-flask/config.yml b/examples/miniapps/ghnav-flask/config.yml
new file mode 100644
index 00000000..9bd0ccd3
--- /dev/null
+++ b/examples/miniapps/ghnav-flask/config.yml
@@ -0,0 +1,5 @@
+github:
+  request_timeout: 10
+search:
+  default_term: "Dependency Injector"
+  default_limit: 5
diff --git a/examples/miniapps/ghnav-flask/githubnavigator/__init__.py b/examples/miniapps/ghnav-flask/githubnavigator/__init__.py
new file mode 100644
index 00000000..1c744ca5
--- /dev/null
+++ b/examples/miniapps/ghnav-flask/githubnavigator/__init__.py
@@ -0,0 +1 @@
+"""Top-level package."""
diff --git a/examples/miniapps/ghnav-flask/githubnavigator/application.py b/examples/miniapps/ghnav-flask/githubnavigator/application.py
new file mode 100644
index 00000000..1bffa314
--- /dev/null
+++ b/examples/miniapps/ghnav-flask/githubnavigator/application.py
@@ -0,0 +1,39 @@
+"""Application module."""
+
+from dependency_injector import containers, providers
+from dependency_injector.ext import flask
+from github import Github
+
+from . import services, views
+
+
+class Application(containers.DeclarativeContainer):
+    """Application container."""
+
+    config = providers.Configuration()
+
+    github_client = providers.Factory(
+        Github,
+        login_or_token=config.github.auth_token,
+        timeout=config.github.request_timeout,
+    )
+
+    search_service = providers.Factory(
+        services.SearchService,
+        github_client=github_client,
+    )
+
+    index_view = providers.Callable(
+        views.index,
+        search_service=search_service,
+        default_search_term=config.search.default_term,
+        default_search_limit=config.search.default_limit,
+    )
+
+    app = providers.Factory(
+        flask.create_app,
+        name=__name__,
+        routes=[
+            flask.Route('/', view_provider=index_view),
+        ],
+    )
diff --git a/examples/miniapps/ghnav-flask/githubnavigator/entrypoint.py b/examples/miniapps/ghnav-flask/githubnavigator/entrypoint.py
new file mode 100644
index 00000000..a64be771
--- /dev/null
+++ b/examples/miniapps/ghnav-flask/githubnavigator/entrypoint.py
@@ -0,0 +1,9 @@
+"""Entrypoint module."""
+
+from .application import Application
+
+
+application = Application()
+application.config.from_yaml('config.yml')
+application.config.github.auth_token.from_env('GITHUB_TOKEN')
+app = application.app()
diff --git a/examples/miniapps/ghnav-flask/githubnavigator/services.py b/examples/miniapps/ghnav-flask/githubnavigator/services.py
new file mode 100644
index 00000000..d167404e
--- /dev/null
+++ b/examples/miniapps/ghnav-flask/githubnavigator/services.py
@@ -0,0 +1,41 @@
+"""Services module."""
+
+from github import Github
+from github.Repository import Repository
+from github.Commit import Commit
+
+
+class SearchService:
+    """Search service performs search on Github."""
+
+    def __init__(self, github_client: Github):
+        self._github_client = github_client
+
+    def search_repositories(self, term, limit):
+        """Search for repositories and return formatted data."""
+        repositories = self._github_client.search_repositories(term, **{'in': 'name'})
+        return [
+            self._format_repo(repository)
+            for repository in repositories[:limit]
+        ]
+
+    def _format_repo(self, repository: Repository):
+        return {
+            'url': repository.html_url,
+            'name': repository.name,
+            'owner': {
+                'login': repository.owner.login,
+                'url': repository.owner.html_url,
+                'avatar_url': repository.owner.avatar_url,
+            },
+            'created_at': repository.created_at,
+            'latest_commit': self._format_commit(repository.get_commits()[0]),
+        }
+
+    def _format_commit(self, commit: Commit):
+        return {
+            'sha': commit.sha,
+            'url': commit.html_url,
+            'message': commit.commit.message,
+            'author_name': commit.commit.author.name,
+        }
diff --git a/examples/miniapps/ghnav-flask/githubnavigator/templates/index.html b/examples/miniapps/ghnav-flask/githubnavigator/templates/index.html
new file mode 100644
index 00000000..ecb7d266
--- /dev/null
+++ b/examples/miniapps/ghnav-flask/githubnavigator/templates/index.html
@@ -0,0 +1,40 @@
+<!DOCTYPE html>
+<html>
+<head>
+    <title>Github Navigator</title>
+</head>
+<body>
+<h1>Github Navigator</h1>
+<form method="get">
+    <p>
+        Search term: <input type="text" name="search_term" value="{{ search_term if search_term }}">
+        Limit: <input type="text" name="limit" value="{{ limit }}">
+        <input type="submit">
+    </p>
+</form>
+<h2>Search results</h2>
+{% if repositories|length == 0 %}
+<small>No search results</small>
+{% endif %}
+{% for repository in repositories %} {{n}}
+<p>
+    <small>Search result # {{ loop.index }} from {{ repositories|length }}</small>
+</p>
+<p>
+    Repository: <a href="{{ repository.url }}">{{ repository.name }}</a>
+</p>
+<p>
+    Repository owner:
+    <a href="{{ repository.owner.url }}"><img src="{{ repository.owner.avatar_url }}" alt="avatar" height="24" width="24"/></a>
+    <a href="{{ repository.owner.url }}">{{ repository.owner.login }}</a>
+</p>
+<p>
+    Created at: {{ repository.created_at }}
+</p>
+<p>
+    LastCommit: <a href="{{ repository.latest_commit.url }}">{{ repository.latest_commit.sha }}</a> {{ repository.latest_commit['message'] }} {{ repository.latest_commit.author_name }}
+</p>
+<hr/>
+{% endfor %}
+</body>
+</html>
diff --git a/examples/miniapps/ghnav-flask/githubnavigator/tests.py b/examples/miniapps/ghnav-flask/githubnavigator/tests.py
new file mode 100644
index 00000000..0fe96dbd
--- /dev/null
+++ b/examples/miniapps/ghnav-flask/githubnavigator/tests.py
@@ -0,0 +1,90 @@
+"""Tests module."""
+
+from unittest import mock
+
+import pytest
+from github import Github
+from flask import url_for
+
+from .application import Application
+
+
+@pytest.fixture
+def application():
+    application = Application()
+    application.config.from_dict(
+        {
+            'github': {
+                'auth_token': 'test-token',
+                'request_timeout': 10,
+            },
+            'search': {
+                'default_term': 'Dependency Injector',
+                'default_limit': 5,
+            },
+        }
+    )
+    return application
+
+
+@pytest.fixture()
+def app(application: Application):
+    return application.app()
+
+
+def test_index(client, application: Application):
+    github_client_mock = mock.Mock(spec=Github)
+    github_client_mock.search_repositories.return_value = [
+        mock.Mock(
+            html_url='repo1-url',
+            name='repo1-name',
+            owner=mock.Mock(
+                login='owner1-login',
+                html_url='owner1-url',
+                avatar_url='owner1-avatar-url',
+            ),
+            created_at='repo1-created-at',
+            get_commits=mock.Mock(return_value=[mock.Mock()]),
+        ),
+        mock.Mock(
+            html_url='repo2-url',
+            name='repo2-name',
+            owner=mock.Mock(
+                login='owner2-login',
+                html_url='owner2-url',
+                avatar_url='owner2-avatar-url',
+            ),
+            created_at='repo2-created-at',
+            get_commits=mock.Mock(return_value=[mock.Mock()]),
+        ),
+    ]
+
+    with application.github_client.override(github_client_mock):
+        response = client.get(url_for('index'))
+
+    assert response.status_code == 200
+
+    assert b'repo1-url' in response.data
+    assert b'repo1-name' in response.data
+    assert b'owner1-login' in response.data
+    assert b'owner1-url' in response.data
+    assert b'owner1-avatar-url' in response.data
+    assert b'repo1-created-at' in response.data
+
+    assert b'repo2-url' in response.data
+    assert b'repo2-name' in response.data
+    assert b'owner2-login' in response.data
+    assert b'owner2-url' in response.data
+    assert b'owner2-avatar-url' in response.data
+    assert b'repo2-created-at' in response.data
+
+
+def test_index_no_results(client, application: Application):
+    github_client_mock = mock.Mock(spec=Github)
+    github_client_mock.search_repositories.return_value = []
+
+    with application.github_client.override(github_client_mock):
+        response = client.get(url_for('index'))
+
+    assert response.status_code == 200
+    assert b'No search results' in response.data
diff --git a/examples/miniapps/ghnav-flask/githubnavigator/views.py b/examples/miniapps/ghnav-flask/githubnavigator/views.py
new file mode 100644
index 00000000..f444c559
--- /dev/null
+++ b/examples/miniapps/ghnav-flask/githubnavigator/views.py
@@ -0,0 +1,19 @@
+"""Views module."""
+
+from flask import request, render_template
+
+from .services import SearchService
+
+
+def index(search_service: SearchService, default_search_term, default_search_limit):
+    search_term = request.args.get('search_term', default_search_term)
+    limit = request.args.get('limit', default_search_limit, int)
+
+    repositories = search_service.search_repositories(search_term, limit)
+
+    return render_template(
+        'index.html',
+        search_term=search_term,
+        limit=limit,
+        repositories=repositories,
+    )
diff --git a/examples/miniapps/ghnav-flask/requirements.txt b/examples/miniapps/ghnav-flask/requirements.txt
new file mode 100644
index 00000000..f24e8604
--- /dev/null
+++ b/examples/miniapps/ghnav-flask/requirements.txt
@@ -0,0 +1,4 @@
+dependency-injector[flask,yaml]
+pygithub
+pytest-flask
+pytest-cov
diff --git a/requirements-dev.txt b/requirements-dev.txt
index 6a587890..c51f0e24 100644
--- a/requirements-dev.txt
+++ b/requirements-dev.txt
@@ -6,3 +6,5 @@ flake8
 pydocstyle
 sphinx_autobuild
 pip
+
+-r requirements-ext.txt
diff --git a/requirements-doc.txt b/requirements-doc.txt
index cae6e8fb..fd0b9248 100644
--- a/requirements-doc.txt
+++ b/requirements-doc.txt
@@ -1,3 +1,5 @@
 sphinx
 sphinx_rtd_theme>=0.2.5b2
 -e git://github.com/rmk135/sphinxcontrib-disqus.git#egg=sphinxcontrib-disqus
+
+-r requirements-ext.txt
diff --git a/requirements-ext.txt b/requirements-ext.txt
new file mode 100644
index 00000000..7e106024
--- /dev/null
+++ b/requirements-ext.txt
@@ -0,0 +1 @@
+flask
diff --git a/setup.py b/setup.py
index 236f0997..f429e4bd 100644
--- a/setup.py
+++ b/setup.py
@@ -41,6 +41,7 @@ setup(name='dependency-injector',
       download_url='https://pypi.python.org/pypi/dependency_injector',
       packages=[
           'dependency_injector',
+          'dependency_injector.ext',
       ],
       package_dir={
           '': 'src',
@@ -63,6 +64,9 @@ setup(name='dependency-injector',
           'yaml': [
               'pyyaml',
           ],
+          'flask': [
+              'flask',
+          ],
       },
       zip_safe=True,
       license='BSD New',
@@ -75,6 +79,7 @@ setup(name='dependency-injector',
           'Factory',
           'Singleton',
           'Design patterns',
+          'Flask',
       ],
       classifiers=[
           'Development Status :: 5 - Production/Stable',
diff --git a/src/dependency_injector/__init__.py b/src/dependency_injector/__init__.py
index ad50da4c..f722ee16 100644
--- a/src/dependency_injector/__init__.py
+++ b/src/dependency_injector/__init__.py
@@ -1,6 +1,6 @@
 """Dependency injector top-level package."""
 
-__version__ = '3.19.2'
+__version__ = '3.20.0'
 """Version number that follows semantic versioning.
 
 :type: str
diff --git a/src/dependency_injector/ext/__init__.py b/src/dependency_injector/ext/__init__.py
new file mode 100644
index 00000000..26e0e04b
--- /dev/null
+++ b/src/dependency_injector/ext/__init__.py
@@ -0,0 +1 @@
+"""Extensions package."""
diff --git a/src/dependency_injector/ext/flask.py b/src/dependency_injector/ext/flask.py
new file mode 100644
index 00000000..8dcafc70
--- /dev/null
+++ b/src/dependency_injector/ext/flask.py
@@ -0,0 +1,83 @@
+"""Flask extension module."""
+
+from __future__ import absolute_import
+
+from flask import Flask
+
+from dependency_injector import providers, errors
+
+
+def create_app(name, routes, **kwargs):
+    """Create Flask app and add routes."""
+    app = Flask(name, **kwargs)
+    for route in routes:
+        app.add_url_rule(*route.args, **route.options)
+    return app
+
+
+def as_view(provider, name=None):
+    """Transform class-based view provider to view function."""
+    if isinstance(provider, providers.Factory):
+        def view(*args, **kwargs):
+            self = provider()
+            return self.dispatch_request(*args, **kwargs)
+
+        assert name, 'Argument "endpoint" is required for class-based views'
+        view.__name__ = name
+    elif isinstance(provider, providers.Callable):
+        def view(*args, **kwargs):
+            return provider(*args, **kwargs)
+
+        view.__name__ = provider.provides.__name__
+    else:
+        raise errors.Error('Undefined provider type')
+
+    view.__doc__ = provider.provides.__doc__
+    view.__module__ = provider.provides.__module__
+
+    if isinstance(provider.provides, type):
+        view.view_class = provider.provides
+
+    if hasattr(provider.provides, 'decorators'):
+        for decorator in provider.provides.decorators:
+            view = decorator(view)
+
+    if hasattr(provider.provides, 'methods'):
+        view.methods = provider.provides.methods
+
+    if hasattr(provider.provides, 'provide_automatic_options'):
+        view.provide_automatic_options = provider.provides.provide_automatic_options
+
+    return view
+
+
+class Route:
+    """Route is a glue for Dependency Injector providers and Flask views."""
+
+    def __init__(
+            self,
+            rule,
+            endpoint=None,
+            view_provider=None,
+            provide_automatic_options=None,
+            **options):
+        """Initialize route."""
+        self.view_provider = view_provider
+        self.args = (rule, endpoint, as_view(view_provider, endpoint), provide_automatic_options)
+        self.options = options
+
+    def __deepcopy__(self, memo):
+        """Create and return full copy of provider."""
+        copied = memo.get(id(self))
+        if copied is not None:
+            return copied
+
+        rule, endpoint, _, provide_automatic_options = self.args
+        view_provider = providers.deepcopy(self.view_provider, memo)
+
+        return self.__class__(
+            rule,
+            endpoint,
+            view_provider,
+            provide_automatic_options,
+            **self.options)
diff --git a/src/dependency_injector/providers.c b/src/dependency_injector/providers.c
index b45b8527..21816468 100644
--- a/src/dependency_injector/providers.c
+++ b/src/dependency_injector/providers.c
@@ -1337,7 +1337,7 @@ struct __pyx_obj_19dependency_injector_9providers_NamedInjection {
 };
 
 
-/* "dependency_injector/providers.pyx":2333
+/* "dependency_injector/providers.pyx":2338
  *         return self.__providers[name]
  * 
  *     def __str__(self):             # <<<<<<<<<<<<<<
@@ -1350,7 +1350,7 @@ struct __pyx_obj_19dependency_injector_9providers___pyx_scope_struct____str__ {
 };
 
 
-/* "dependency_injector/providers.pyx":2343
+/* "dependency_injector/providers.pyx":2348
  *             selector=self.__selector,
  *             providers=', '.join((
  *                 '{0}={1}'.format(name, provider)             # <<<<<<<<<<<<<<
@@ -1595,7 +1595,7 @@ struct __pyx_vtabstruct_19dependency_injector_9providers_Factory {
 static struct __pyx_vtabstruct_19dependency_injector_9providers_Factory *__pyx_vtabptr_19dependency_injector_9providers_Factory;
 
 
-/* "dependency_injector/providers.pyx":1520
+/* "dependency_injector/providers.pyx":1525
  * 
  * 
  * cdef class DelegatedFactory(Factory):             # <<<<<<<<<<<<<<
@@ -1609,7 +1609,7 @@ struct __pyx_vtabstruct_19dependency_injector_9providers_DelegatedFactory {
 static struct __pyx_vtabstruct_19dependency_injector_9providers_DelegatedFactory *__pyx_vtabptr_19dependency_injector_9providers_DelegatedFactory;
 
 
-/* "dependency_injector/providers.pyx":1542
+/* "dependency_injector/providers.pyx":1547
  * 
  * 
  * cdef class AbstractFactory(Factory):             # <<<<<<<<<<<<<<
@@ -1623,7 +1623,7 @@ struct __pyx_vtabstruct_19dependency_injector_9providers_AbstractFactory {
 static struct __pyx_vtabstruct_19dependency_injector_9providers_AbstractFactory *__pyx_vtabptr_19dependency_injector_9providers_AbstractFactory;
 
 
-/* "dependency_injector/providers.pyx":1583
+/* "dependency_injector/providers.pyx":1588
  * 
  * 
  * cdef class FactoryDelegate(Delegate):             # <<<<<<<<<<<<<<
@@ -1637,7 +1637,7 @@ struct __pyx_vtabstruct_19dependency_injector_9providers_FactoryDelegate {
 static struct __pyx_vtabstruct_19dependency_injector_9providers_FactoryDelegate *__pyx_vtabptr_19dependency_injector_9providers_FactoryDelegate;
 
 
-/* "dependency_injector/providers.pyx":1605
+/* "dependency_injector/providers.pyx":1610
  * 
  * 
  * cdef class FactoryAggregate(Provider):             # <<<<<<<<<<<<<<
@@ -1652,7 +1652,7 @@ struct __pyx_vtabstruct_19dependency_injector_9providers_FactoryAggregate {
 static struct __pyx_vtabstruct_19dependency_injector_9providers_FactoryAggregate *__pyx_vtabptr_19dependency_injector_9providers_FactoryAggregate;
 
 
-/* "dependency_injector/providers.pyx":1692
+/* "dependency_injector/providers.pyx":1697
  * 
  * 
  * cdef class BaseSingleton(Provider):             # <<<<<<<<<<<<<<
@@ -1666,7 +1666,7 @@ struct __pyx_vtabstruct_19dependency_injector_9providers_BaseSingleton {
 static struct __pyx_vtabstruct_19dependency_injector_9providers_BaseSingleton *__pyx_vtabptr_19dependency_injector_9providers_BaseSingleton;
 
 
-/* "dependency_injector/providers.pyx":1845
+/* "dependency_injector/providers.pyx":1850
  * 
  * 
  * cdef class Singleton(BaseSingleton):             # <<<<<<<<<<<<<<
@@ -1680,7 +1680,7 @@ struct __pyx_vtabstruct_19dependency_injector_9providers_Singleton {
 static struct __pyx_vtabstruct_19dependency_injector_9providers_Singleton *__pyx_vtabptr_19dependency_injector_9providers_Singleton;
 
 
-/* "dependency_injector/providers.pyx":1901
+/* "dependency_injector/providers.pyx":1906
  * 
  * 
  * cdef class DelegatedSingleton(Singleton):             # <<<<<<<<<<<<<<
@@ -1694,7 +1694,7 @@ struct __pyx_vtabstruct_19dependency_injector_9providers_DelegatedSingleton {
 static struct __pyx_vtabstruct_19dependency_injector_9providers_DelegatedSingleton *__pyx_vtabptr_19dependency_injector_9providers_DelegatedSingleton;
 
 
-/* "dependency_injector/providers.pyx":1923
+/* "dependency_injector/providers.pyx":1928
  * 
  * 
  * cdef class ThreadSafeSingleton(BaseSingleton):             # <<<<<<<<<<<<<<
@@ -1708,7 +1708,7 @@ struct __pyx_vtabstruct_19dependency_injector_9providers_ThreadSafeSingleton {
 static struct __pyx_vtabstruct_19dependency_injector_9providers_ThreadSafeSingleton *__pyx_vtabptr_19dependency_injector_9providers_ThreadSafeSingleton;
 
 
-/* "dependency_injector/providers.pyx":1958
+/* "dependency_injector/providers.pyx":1963
  * 
  * 
  * cdef class DelegatedThreadSafeSingleton(ThreadSafeSingleton):             # <<<<<<<<<<<<<<
@@ -1722,7 +1722,7 @@ struct __pyx_vtabstruct_19dependency_injector_9providers_DelegatedThreadSafeSing
 static struct __pyx_vtabstruct_19dependency_injector_9providers_DelegatedThreadSafeSingleton *__pyx_vtabptr_19dependency_injector_9providers_DelegatedThreadSafeSingleton;
 
 
-/* "dependency_injector/providers.pyx":1980
+/* "dependency_injector/providers.pyx":1985
  * 
  * 
  * cdef class ThreadLocalSingleton(BaseSingleton):             # <<<<<<<<<<<<<<
@@ -1736,7 +1736,7 @@ struct __pyx_vtabstruct_19dependency_injector_9providers_ThreadLocalSingleton {
 static struct __pyx_vtabstruct_19dependency_injector_9providers_ThreadLocalSingleton *__pyx_vtabptr_19dependency_injector_9providers_ThreadLocalSingleton;
 
 
-/* "dependency_injector/providers.pyx":2028
+/* "dependency_injector/providers.pyx":2033
  * 
  * 
  * cdef class DelegatedThreadLocalSingleton(ThreadLocalSingleton):             # <<<<<<<<<<<<<<
@@ -1750,7 +1750,7 @@ struct __pyx_vtabstruct_19dependency_injector_9providers_DelegatedThreadLocalSin
 static struct __pyx_vtabstruct_19dependency_injector_9providers_DelegatedThreadLocalSingleton *__pyx_vtabptr_19dependency_injector_9providers_DelegatedThreadLocalSingleton;
 
 
-/* "dependency_injector/providers.pyx":2050
+/* "dependency_injector/providers.pyx":2055
  * 
  * 
  * cdef class AbstractSingleton(BaseSingleton):             # <<<<<<<<<<<<<<
@@ -1764,7 +1764,7 @@ struct __pyx_vtabstruct_19dependency_injector_9providers_AbstractSingleton {
 static struct __pyx_vtabstruct_19dependency_injector_9providers_AbstractSingleton *__pyx_vtabptr_19dependency_injector_9providers_AbstractSingleton;
 
 
-/* "dependency_injector/providers.pyx":2095
+/* "dependency_injector/providers.pyx":2100
  * 
  * 
  * cdef class SingletonDelegate(Delegate):             # <<<<<<<<<<<<<<
@@ -1778,7 +1778,7 @@ struct __pyx_vtabstruct_19dependency_injector_9providers_SingletonDelegate {
 static struct __pyx_vtabstruct_19dependency_injector_9providers_SingletonDelegate *__pyx_vtabptr_19dependency_injector_9providers_SingletonDelegate;
 
 
-/* "dependency_injector/providers.pyx":2117
+/* "dependency_injector/providers.pyx":2122
  * 
  * 
  * cdef class List(Provider):             # <<<<<<<<<<<<<<
@@ -1792,7 +1792,7 @@ struct __pyx_vtabstruct_19dependency_injector_9providers_List {
 static struct __pyx_vtabstruct_19dependency_injector_9providers_List *__pyx_vtabptr_19dependency_injector_9providers_List;
 
 
-/* "dependency_injector/providers.pyx":2219
+/* "dependency_injector/providers.pyx":2224
  * 
  * 
  * cdef class Container(Provider):             # <<<<<<<<<<<<<<
@@ -1806,7 +1806,7 @@ struct __pyx_vtabstruct_19dependency_injector_9providers_Container {
 static struct __pyx_vtabstruct_19dependency_injector_9providers_Container *__pyx_vtabptr_19dependency_injector_9providers_Container;
 
 
-/* "dependency_injector/providers.pyx":2270
+/* "dependency_injector/providers.pyx":2275
  * 
  * 
  * cdef class Selector(Provider):             # <<<<<<<<<<<<<<
@@ -3490,6 +3490,7 @@ static int __pyx_pf_19dependency_injector_9providers_7Factory___init__(struct __
 static PyObject *__pyx_pf_19dependency_injector_9providers_7Factory_2__deepcopy__(struct __pyx_obj_19dependency_injector_9providers_Factory *__pyx_v_self, PyObject *__pyx_v_memo); /* proto */
 static PyObject *__pyx_pf_19dependency_injector_9providers_7Factory_4__str__(struct __pyx_obj_19dependency_injector_9providers_Factory *__pyx_v_self); /* proto */
 static PyObject *__pyx_pf_19dependency_injector_9providers_7Factory_3cls___get__(struct __pyx_obj_19dependency_injector_9providers_Factory *__pyx_v_self); /* proto */
+static PyObject *__pyx_pf_19dependency_injector_9providers_7Factory_8provides___get__(struct __pyx_obj_19dependency_injector_9providers_Factory *__pyx_v_self); /* proto */
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-    /* "dependency_injector/providers.pyx":2324
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-  /* "dependency_injector/providers.pyx":2328
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-      /* "dependency_injector/providers.pyx":2562
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+  __pyx_t_1 = __Pyx_PyObject_GetAttrStr(__pyx_v_dict1, __pyx_n_s_copy); if (unlikely(!__pyx_t_1)) __PYX_ERR(1, 2570, __pyx_L1_error)
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@@ -46597,19 +46661,19 @@ static PyObject *__pyx_pf_19dependency_injector_9providers_22merge_dicts(CYTHON_
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-  /* "dependency_injector/providers.pyx":2566
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-  __pyx_t_1 = __Pyx_PyObject_GetAttrStr(__pyx_v_result, __pyx_n_s_update); if (unlikely(!__pyx_t_1)) __PYX_ERR(1, 2566, __pyx_L1_error)
+  __pyx_t_1 = __Pyx_PyObject_GetAttrStr(__pyx_v_result, __pyx_n_s_update); if (unlikely(!__pyx_t_1)) __PYX_ERR(1, 2571, __pyx_L1_error)
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@@ -46623,12 +46687,12 @@ static PyObject *__pyx_pf_19dependency_injector_9providers_22merge_dicts(CYTHON_
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-  /* "dependency_injector/providers.pyx":2567
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   return __pyx_pw_19dependency_injector_9providers_7Factory_3cls_1__get__(o);
 }
 
+static PyObject *__pyx_getprop_19dependency_injector_9providers_7Factory_provides(PyObject *o, CYTHON_UNUSED void *x) {
+  return __pyx_pw_19dependency_injector_9providers_7Factory_8provides_1__get__(o);
+}
+
 static PyObject *__pyx_getprop_19dependency_injector_9providers_7Factory_args(PyObject *o, CYTHON_UNUSED void *x) {
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-  __pyx_builtin_hex = __Pyx_GetBuiltinName(__pyx_n_s_hex); if (!__pyx_builtin_hex) __PYX_ERR(1, 2346, __pyx_L1_error)
+  __pyx_builtin_hex = __Pyx_GetBuiltinName(__pyx_n_s_hex); if (!__pyx_builtin_hex) __PYX_ERR(1, 2351, __pyx_L1_error)
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-  /* "dependency_injector/providers.pyx":2538
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-  __pyx_tuple__20 = PyTuple_Pack(1, __pyx_n_s_memo); if (unlikely(!__pyx_tuple__20)) __PYX_ERR(1, 2538, __pyx_L1_error)
+  __pyx_tuple__20 = PyTuple_Pack(1, __pyx_n_s_memo); if (unlikely(!__pyx_tuple__20)) __PYX_ERR(1, 2543, __pyx_L1_error)
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+  __pyx_codeobj__21 = (PyObject*)__Pyx_PyCode_New(1, 0, 1, 0, CO_OPTIMIZED|CO_NEWLOCALS, __pyx_empty_bytes, __pyx_empty_tuple, __pyx_empty_tuple, __pyx_tuple__20, __pyx_empty_tuple, __pyx_empty_tuple, __pyx_kp_s_src_dependency_injector_provider, __pyx_n_s_add_sys_streams, 2543, __pyx_empty_bytes); if (unlikely(!__pyx_codeobj__21)) __PYX_ERR(1, 2543, __pyx_L1_error)
 
-  /* "dependency_injector/providers.pyx":2549
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+  __pyx_tuple__22 = PyTuple_Pack(5, __pyx_n_s_dict1, __pyx_n_s_dict2, __pyx_n_s_key, __pyx_n_s_value, __pyx_n_s_result); if (unlikely(!__pyx_tuple__22)) __PYX_ERR(1, 2554, __pyx_L1_error)
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+  __pyx_codeobj__23 = (PyObject*)__Pyx_PyCode_New(2, 0, 5, 0, CO_OPTIMIZED|CO_NEWLOCALS, __pyx_empty_bytes, __pyx_empty_tuple, __pyx_empty_tuple, __pyx_tuple__22, __pyx_empty_tuple, __pyx_empty_tuple, __pyx_kp_s_src_dependency_injector_provider, __pyx_n_s_merge_dicts, 2554, __pyx_empty_bytes); if (unlikely(!__pyx_codeobj__23)) __PYX_ERR(1, 2554, __pyx_L1_error)
 
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-  if (PyType_Ready(&__pyx_type_19dependency_injector_9providers_DelegatedFactory) < 0) __PYX_ERR(1, 1520, __pyx_L1_error)
+  if (PyType_Ready(&__pyx_type_19dependency_injector_9providers_DelegatedFactory) < 0) __PYX_ERR(1, 1525, __pyx_L1_error)
   #if PY_VERSION_HEX < 0x030800B1
   __pyx_type_19dependency_injector_9providers_DelegatedFactory.tp_print = 0;
   #endif
   if ((CYTHON_USE_TYPE_SLOTS && CYTHON_USE_PYTYPE_LOOKUP) && likely(!__pyx_type_19dependency_injector_9providers_DelegatedFactory.tp_dictoffset && __pyx_type_19dependency_injector_9providers_DelegatedFactory.tp_getattro == PyObject_GenericGetAttr)) {
     __pyx_type_19dependency_injector_9providers_DelegatedFactory.tp_getattro = __Pyx_PyObject_GenericGetAttr;
   }
-  if (__Pyx_SetVtable(__pyx_type_19dependency_injector_9providers_DelegatedFactory.tp_dict, __pyx_vtabptr_19dependency_injector_9providers_DelegatedFactory) < 0) __PYX_ERR(1, 1520, __pyx_L1_error)
-  if (PyObject_SetAttr(__pyx_m, __pyx_n_s_DelegatedFactory, (PyObject *)&__pyx_type_19dependency_injector_9providers_DelegatedFactory) < 0) __PYX_ERR(1, 1520, __pyx_L1_error)
-  if (__Pyx_setup_reduce((PyObject*)&__pyx_type_19dependency_injector_9providers_DelegatedFactory) < 0) __PYX_ERR(1, 1520, __pyx_L1_error)
+  if (__Pyx_SetVtable(__pyx_type_19dependency_injector_9providers_DelegatedFactory.tp_dict, __pyx_vtabptr_19dependency_injector_9providers_DelegatedFactory) < 0) __PYX_ERR(1, 1525, __pyx_L1_error)
+  if (PyObject_SetAttr(__pyx_m, __pyx_n_s_DelegatedFactory, (PyObject *)&__pyx_type_19dependency_injector_9providers_DelegatedFactory) < 0) __PYX_ERR(1, 1525, __pyx_L1_error)
+  if (__Pyx_setup_reduce((PyObject*)&__pyx_type_19dependency_injector_9providers_DelegatedFactory) < 0) __PYX_ERR(1, 1525, __pyx_L1_error)
   __pyx_ptype_19dependency_injector_9providers_DelegatedFactory = &__pyx_type_19dependency_injector_9providers_DelegatedFactory;
   __pyx_vtabptr_19dependency_injector_9providers_AbstractFactory = &__pyx_vtable_19dependency_injector_9providers_AbstractFactory;
   __pyx_vtable_19dependency_injector_9providers_AbstractFactory.__pyx_base = *__pyx_vtabptr_19dependency_injector_9providers_Factory;
   __pyx_vtable_19dependency_injector_9providers_AbstractFactory.__pyx_base.__pyx_base._provide = (PyObject *(*)(struct __pyx_obj_19dependency_injector_9providers_Provider *, PyObject *, PyObject *, int __pyx_skip_dispatch))__pyx_f_19dependency_injector_9providers_15AbstractFactory__provide;
   __pyx_type_19dependency_injector_9providers_AbstractFactory.tp_base = __pyx_ptype_19dependency_injector_9providers_Factory;
-  if (PyType_Ready(&__pyx_type_19dependency_injector_9providers_AbstractFactory) < 0) __PYX_ERR(1, 1542, __pyx_L1_error)
+  if (PyType_Ready(&__pyx_type_19dependency_injector_9providers_AbstractFactory) < 0) __PYX_ERR(1, 1547, __pyx_L1_error)
   #if PY_VERSION_HEX < 0x030800B1
   __pyx_type_19dependency_injector_9providers_AbstractFactory.tp_print = 0;
   #endif
@@ -69118,7 +69187,7 @@ static int __Pyx_modinit_type_init_code(void) {
   }
   #if CYTHON_COMPILING_IN_CPYTHON
   {
-    PyObject *wrapper = PyObject_GetAttrString((PyObject *)&__pyx_type_19dependency_injector_9providers_AbstractFactory, "__call__"); if (unlikely(!wrapper)) __PYX_ERR(1, 1542, __pyx_L1_error)
+    PyObject *wrapper = PyObject_GetAttrString((PyObject *)&__pyx_type_19dependency_injector_9providers_AbstractFactory, "__call__"); if (unlikely(!wrapper)) __PYX_ERR(1, 1547, __pyx_L1_error)
     if (Py_TYPE(wrapper) == &PyWrapperDescr_Type) {
       __pyx_wrapperbase_19dependency_injector_9providers_15AbstractFactory___call__ = *((PyWrapperDescrObject *)wrapper)->d_base;
       __pyx_wrapperbase_19dependency_injector_9providers_15AbstractFactory___call__.doc = __pyx_doc_19dependency_injector_9providers_15AbstractFactory___call__;
@@ -69126,14 +69195,14 @@ static int __Pyx_modinit_type_init_code(void) {
     }
   }
   #endif
-  if (__Pyx_SetVtable(__pyx_type_19dependency_injector_9providers_AbstractFactory.tp_dict, __pyx_vtabptr_19dependency_injector_9providers_AbstractFactory) < 0) __PYX_ERR(1, 1542, __pyx_L1_error)
-  if (PyObject_SetAttr(__pyx_m, __pyx_n_s_AbstractFactory, (PyObject *)&__pyx_type_19dependency_injector_9providers_AbstractFactory) < 0) __PYX_ERR(1, 1542, __pyx_L1_error)
-  if (__Pyx_setup_reduce((PyObject*)&__pyx_type_19dependency_injector_9providers_AbstractFactory) < 0) __PYX_ERR(1, 1542, __pyx_L1_error)
+  if (__Pyx_SetVtable(__pyx_type_19dependency_injector_9providers_AbstractFactory.tp_dict, __pyx_vtabptr_19dependency_injector_9providers_AbstractFactory) < 0) __PYX_ERR(1, 1547, __pyx_L1_error)
+  if (PyObject_SetAttr(__pyx_m, __pyx_n_s_AbstractFactory, (PyObject *)&__pyx_type_19dependency_injector_9providers_AbstractFactory) < 0) __PYX_ERR(1, 1547, __pyx_L1_error)
+  if (__Pyx_setup_reduce((PyObject*)&__pyx_type_19dependency_injector_9providers_AbstractFactory) < 0) __PYX_ERR(1, 1547, __pyx_L1_error)
   __pyx_ptype_19dependency_injector_9providers_AbstractFactory = &__pyx_type_19dependency_injector_9providers_AbstractFactory;
   __pyx_vtabptr_19dependency_injector_9providers_FactoryDelegate = &__pyx_vtable_19dependency_injector_9providers_FactoryDelegate;
   __pyx_vtable_19dependency_injector_9providers_FactoryDelegate.__pyx_base = *__pyx_vtabptr_19dependency_injector_9providers_Delegate;
   __pyx_type_19dependency_injector_9providers_FactoryDelegate.tp_base = __pyx_ptype_19dependency_injector_9providers_Delegate;
-  if (PyType_Ready(&__pyx_type_19dependency_injector_9providers_FactoryDelegate) < 0) __PYX_ERR(1, 1583, __pyx_L1_error)
+  if (PyType_Ready(&__pyx_type_19dependency_injector_9providers_FactoryDelegate) < 0) __PYX_ERR(1, 1588, __pyx_L1_error)
   #if PY_VERSION_HEX < 0x030800B1
   __pyx_type_19dependency_injector_9providers_FactoryDelegate.tp_print = 0;
   #endif
@@ -69142,7 +69211,7 @@ static int __Pyx_modinit_type_init_code(void) {
   }
   #if CYTHON_COMPILING_IN_CPYTHON
   {
-    PyObject *wrapper = PyObject_GetAttrString((PyObject *)&__pyx_type_19dependency_injector_9providers_FactoryDelegate, "__init__"); if (unlikely(!wrapper)) __PYX_ERR(1, 1583, __pyx_L1_error)
+    PyObject *wrapper = PyObject_GetAttrString((PyObject *)&__pyx_type_19dependency_injector_9providers_FactoryDelegate, "__init__"); if (unlikely(!wrapper)) __PYX_ERR(1, 1588, __pyx_L1_error)
     if (Py_TYPE(wrapper) == &PyWrapperDescr_Type) {
       __pyx_wrapperbase_19dependency_injector_9providers_15FactoryDelegate___init__ = *((PyWrapperDescrObject *)wrapper)->d_base;
       __pyx_wrapperbase_19dependency_injector_9providers_15FactoryDelegate___init__.doc = __pyx_doc_19dependency_injector_9providers_15FactoryDelegate___init__;
@@ -69150,21 +69219,21 @@ static int __Pyx_modinit_type_init_code(void) {
     }
   }
   #endif
-  if (__Pyx_SetVtable(__pyx_type_19dependency_injector_9providers_FactoryDelegate.tp_dict, __pyx_vtabptr_19dependency_injector_9providers_FactoryDelegate) < 0) __PYX_ERR(1, 1583, __pyx_L1_error)
-  if (PyObject_SetAttr(__pyx_m, __pyx_n_s_FactoryDelegate, (PyObject *)&__pyx_type_19dependency_injector_9providers_FactoryDelegate) < 0) __PYX_ERR(1, 1583, __pyx_L1_error)
-  if (__Pyx_setup_reduce((PyObject*)&__pyx_type_19dependency_injector_9providers_FactoryDelegate) < 0) __PYX_ERR(1, 1583, __pyx_L1_error)
+  if (__Pyx_SetVtable(__pyx_type_19dependency_injector_9providers_FactoryDelegate.tp_dict, __pyx_vtabptr_19dependency_injector_9providers_FactoryDelegate) < 0) __PYX_ERR(1, 1588, __pyx_L1_error)
+  if (PyObject_SetAttr(__pyx_m, __pyx_n_s_FactoryDelegate, (PyObject *)&__pyx_type_19dependency_injector_9providers_FactoryDelegate) < 0) __PYX_ERR(1, 1588, __pyx_L1_error)
+  if (__Pyx_setup_reduce((PyObject*)&__pyx_type_19dependency_injector_9providers_FactoryDelegate) < 0) __PYX_ERR(1, 1588, __pyx_L1_error)
   __pyx_ptype_19dependency_injector_9providers_FactoryDelegate = &__pyx_type_19dependency_injector_9providers_FactoryDelegate;
   __pyx_vtabptr_19dependency_injector_9providers_FactoryAggregate = &__pyx_vtable_19dependency_injector_9providers_FactoryAggregate;
   __pyx_vtable_19dependency_injector_9providers_FactoryAggregate.__pyx_base = *__pyx_vtabptr_19dependency_injector_9providers_Provider;
   __pyx_vtable_19dependency_injector_9providers_FactoryAggregate.__pyx___get_factory = (struct __pyx_obj_19dependency_injector_9providers_Factory *(*)(struct __pyx_obj_19dependency_injector_9providers_FactoryAggregate *, PyObject *))__pyx_f_19dependency_injector_9providers_16FactoryAggregate___get_factory;
   __pyx_type_19dependency_injector_9providers_FactoryAggregate.tp_base = __pyx_ptype_19dependency_injector_9providers_Provider;
-  if (PyType_Ready(&__pyx_type_19dependency_injector_9providers_FactoryAggregate) < 0) __PYX_ERR(1, 1605, __pyx_L1_error)
+  if (PyType_Ready(&__pyx_type_19dependency_injector_9providers_FactoryAggregate) < 0) __PYX_ERR(1, 1610, __pyx_L1_error)
   #if PY_VERSION_HEX < 0x030800B1
   __pyx_type_19dependency_injector_9providers_FactoryAggregate.tp_print = 0;
   #endif
   #if CYTHON_COMPILING_IN_CPYTHON
   {
-    PyObject *wrapper = PyObject_GetAttrString((PyObject *)&__pyx_type_19dependency_injector_9providers_FactoryAggregate, "__init__"); if (unlikely(!wrapper)) __PYX_ERR(1, 1605, __pyx_L1_error)
+    PyObject *wrapper = PyObject_GetAttrString((PyObject *)&__pyx_type_19dependency_injector_9providers_FactoryAggregate, "__init__"); if (unlikely(!wrapper)) __PYX_ERR(1, 1610, __pyx_L1_error)
     if (Py_TYPE(wrapper) == &PyWrapperDescr_Type) {
       __pyx_wrapperbase_19dependency_injector_9providers_16FactoryAggregate___init__ = *((PyWrapperDescrObject *)wrapper)->d_base;
       __pyx_wrapperbase_19dependency_injector_9providers_16FactoryAggregate___init__.doc = __pyx_doc_19dependency_injector_9providers_16FactoryAggregate___init__;
@@ -69174,7 +69243,7 @@ static int __Pyx_modinit_type_init_code(void) {
   #endif
   #if CYTHON_COMPILING_IN_CPYTHON
   {
-    PyObject *wrapper = PyObject_GetAttrString((PyObject *)&__pyx_type_19dependency_injector_9providers_FactoryAggregate, "__call__"); if (unlikely(!wrapper)) __PYX_ERR(1, 1605, __pyx_L1_error)
+    PyObject *wrapper = PyObject_GetAttrString((PyObject *)&__pyx_type_19dependency_injector_9providers_FactoryAggregate, "__call__"); if (unlikely(!wrapper)) __PYX_ERR(1, 1610, __pyx_L1_error)
     if (Py_TYPE(wrapper) == &PyWrapperDescr_Type) {
       __pyx_wrapperbase_19dependency_injector_9providers_16FactoryAggregate_4__call__ = *((PyWrapperDescrObject *)wrapper)->d_base;
       __pyx_wrapperbase_19dependency_injector_9providers_16FactoryAggregate_4__call__.doc = __pyx_doc_19dependency_injector_9providers_16FactoryAggregate_4__call__;
@@ -69184,7 +69253,7 @@ static int __Pyx_modinit_type_init_code(void) {
   #endif
   #if CYTHON_COMPILING_IN_CPYTHON
   {
-    PyObject *wrapper = PyObject_GetAttrString((PyObject *)&__pyx_type_19dependency_injector_9providers_FactoryAggregate, "__getattr__"); if (unlikely(!wrapper)) __PYX_ERR(1, 1605, __pyx_L1_error)
+    PyObject *wrapper = PyObject_GetAttrString((PyObject *)&__pyx_type_19dependency_injector_9providers_FactoryAggregate, "__getattr__"); if (unlikely(!wrapper)) __PYX_ERR(1, 1610, __pyx_L1_error)
     if (Py_TYPE(wrapper) == &PyWrapperDescr_Type) {
       __pyx_wrapperbase_19dependency_injector_9providers_16FactoryAggregate_6__getattr__ = *((PyWrapperDescrObject *)wrapper)->d_base;
       __pyx_wrapperbase_19dependency_injector_9providers_16FactoryAggregate_6__getattr__.doc = __pyx_doc_19dependency_injector_9providers_16FactoryAggregate_6__getattr__;
@@ -69194,7 +69263,7 @@ static int __Pyx_modinit_type_init_code(void) {
   #endif
   #if CYTHON_COMPILING_IN_CPYTHON
   {
-    PyObject *wrapper = PyObject_GetAttrString((PyObject *)&__pyx_type_19dependency_injector_9providers_FactoryAggregate, "__str__"); if (unlikely(!wrapper)) __PYX_ERR(1, 1605, __pyx_L1_error)
+    PyObject *wrapper = PyObject_GetAttrString((PyObject *)&__pyx_type_19dependency_injector_9providers_FactoryAggregate, "__str__"); if (unlikely(!wrapper)) __PYX_ERR(1, 1610, __pyx_L1_error)
     if (Py_TYPE(wrapper) == &PyWrapperDescr_Type) {
       __pyx_wrapperbase_19dependency_injector_9providers_16FactoryAggregate_8__str__ = *((PyWrapperDescrObject *)wrapper)->d_base;
       __pyx_wrapperbase_19dependency_injector_9providers_16FactoryAggregate_8__str__.doc = __pyx_doc_19dependency_injector_9providers_16FactoryAggregate_8__str__;
@@ -69202,14 +69271,14 @@ static int __Pyx_modinit_type_init_code(void) {
     }
   }
   #endif
-  if (__Pyx_SetVtable(__pyx_type_19dependency_injector_9providers_FactoryAggregate.tp_dict, __pyx_vtabptr_19dependency_injector_9providers_FactoryAggregate) < 0) __PYX_ERR(1, 1605, __pyx_L1_error)
-  if (PyObject_SetAttr(__pyx_m, __pyx_n_s_FactoryAggregate, (PyObject *)&__pyx_type_19dependency_injector_9providers_FactoryAggregate) < 0) __PYX_ERR(1, 1605, __pyx_L1_error)
-  if (__Pyx_setup_reduce((PyObject*)&__pyx_type_19dependency_injector_9providers_FactoryAggregate) < 0) __PYX_ERR(1, 1605, __pyx_L1_error)
+  if (__Pyx_SetVtable(__pyx_type_19dependency_injector_9providers_FactoryAggregate.tp_dict, __pyx_vtabptr_19dependency_injector_9providers_FactoryAggregate) < 0) __PYX_ERR(1, 1610, __pyx_L1_error)
+  if (PyObject_SetAttr(__pyx_m, __pyx_n_s_FactoryAggregate, (PyObject *)&__pyx_type_19dependency_injector_9providers_FactoryAggregate) < 0) __PYX_ERR(1, 1610, __pyx_L1_error)
+  if (__Pyx_setup_reduce((PyObject*)&__pyx_type_19dependency_injector_9providers_FactoryAggregate) < 0) __PYX_ERR(1, 1610, __pyx_L1_error)
   __pyx_ptype_19dependency_injector_9providers_FactoryAggregate = &__pyx_type_19dependency_injector_9providers_FactoryAggregate;
   __pyx_vtabptr_19dependency_injector_9providers_BaseSingleton = &__pyx_vtable_19dependency_injector_9providers_BaseSingleton;
   __pyx_vtable_19dependency_injector_9providers_BaseSingleton.__pyx_base = *__pyx_vtabptr_19dependency_injector_9providers_Provider;
   __pyx_type_19dependency_injector_9providers_BaseSingleton.tp_base = __pyx_ptype_19dependency_injector_9providers_Provider;
-  if (PyType_Ready(&__pyx_type_19dependency_injector_9providers_BaseSingleton) < 0) __PYX_ERR(1, 1692, __pyx_L1_error)
+  if (PyType_Ready(&__pyx_type_19dependency_injector_9providers_BaseSingleton) < 0) __PYX_ERR(1, 1697, __pyx_L1_error)
   #if PY_VERSION_HEX < 0x030800B1
   __pyx_type_19dependency_injector_9providers_BaseSingleton.tp_print = 0;
   #endif
@@ -69218,7 +69287,7 @@ static int __Pyx_modinit_type_init_code(void) {
   }
   #if CYTHON_COMPILING_IN_CPYTHON
   {
-    PyObject *wrapper = PyObject_GetAttrString((PyObject *)&__pyx_type_19dependency_injector_9providers_BaseSingleton, "__init__"); if (unlikely(!wrapper)) __PYX_ERR(1, 1692, __pyx_L1_error)
+    PyObject *wrapper = PyObject_GetAttrString((PyObject *)&__pyx_type_19dependency_injector_9providers_BaseSingleton, "__init__"); if (unlikely(!wrapper)) __PYX_ERR(1, 1697, __pyx_L1_error)
     if (Py_TYPE(wrapper) == &PyWrapperDescr_Type) {
       __pyx_wrapperbase_19dependency_injector_9providers_13BaseSingleton___init__ = *((PyWrapperDescrObject *)wrapper)->d_base;
       __pyx_wrapperbase_19dependency_injector_9providers_13BaseSingleton___init__.doc = __pyx_doc_19dependency_injector_9providers_13BaseSingleton___init__;
@@ -69228,7 +69297,7 @@ static int __Pyx_modinit_type_init_code(void) {
   #endif
   #if CYTHON_COMPILING_IN_CPYTHON
   {
-    PyObject *wrapper = PyObject_GetAttrString((PyObject *)&__pyx_type_19dependency_injector_9providers_BaseSingleton, "__str__"); if (unlikely(!wrapper)) __PYX_ERR(1, 1692, __pyx_L1_error)
+    PyObject *wrapper = PyObject_GetAttrString((PyObject *)&__pyx_type_19dependency_injector_9providers_BaseSingleton, "__str__"); if (unlikely(!wrapper)) __PYX_ERR(1, 1697, __pyx_L1_error)
     if (Py_TYPE(wrapper) == &PyWrapperDescr_Type) {
       __pyx_wrapperbase_19dependency_injector_9providers_13BaseSingleton_2__str__ = *((PyWrapperDescrObject *)wrapper)->d_base;
       __pyx_wrapperbase_19dependency_injector_9providers_13BaseSingleton_2__str__.doc = __pyx_doc_19dependency_injector_9providers_13BaseSingleton_2__str__;
@@ -69236,15 +69305,15 @@ static int __Pyx_modinit_type_init_code(void) {
     }
   }
   #endif
-  if (__Pyx_SetVtable(__pyx_type_19dependency_injector_9providers_BaseSingleton.tp_dict, __pyx_vtabptr_19dependency_injector_9providers_BaseSingleton) < 0) __PYX_ERR(1, 1692, __pyx_L1_error)
-  if (PyObject_SetAttr(__pyx_m, __pyx_n_s_BaseSingleton, (PyObject *)&__pyx_type_19dependency_injector_9providers_BaseSingleton) < 0) __PYX_ERR(1, 1692, __pyx_L1_error)
-  if (__Pyx_setup_reduce((PyObject*)&__pyx_type_19dependency_injector_9providers_BaseSingleton) < 0) __PYX_ERR(1, 1692, __pyx_L1_error)
+  if (__Pyx_SetVtable(__pyx_type_19dependency_injector_9providers_BaseSingleton.tp_dict, __pyx_vtabptr_19dependency_injector_9providers_BaseSingleton) < 0) __PYX_ERR(1, 1697, __pyx_L1_error)
+  if (PyObject_SetAttr(__pyx_m, __pyx_n_s_BaseSingleton, (PyObject *)&__pyx_type_19dependency_injector_9providers_BaseSingleton) < 0) __PYX_ERR(1, 1697, __pyx_L1_error)
+  if (__Pyx_setup_reduce((PyObject*)&__pyx_type_19dependency_injector_9providers_BaseSingleton) < 0) __PYX_ERR(1, 1697, __pyx_L1_error)
   __pyx_ptype_19dependency_injector_9providers_BaseSingleton = &__pyx_type_19dependency_injector_9providers_BaseSingleton;
   __pyx_vtabptr_19dependency_injector_9providers_Singleton = &__pyx_vtable_19dependency_injector_9providers_Singleton;
   __pyx_vtable_19dependency_injector_9providers_Singleton.__pyx_base = *__pyx_vtabptr_19dependency_injector_9providers_BaseSingleton;
   __pyx_vtable_19dependency_injector_9providers_Singleton.__pyx_base.__pyx_base._provide = (PyObject *(*)(struct __pyx_obj_19dependency_injector_9providers_Provider *, PyObject *, PyObject *, int __pyx_skip_dispatch))__pyx_f_19dependency_injector_9providers_9Singleton__provide;
   __pyx_type_19dependency_injector_9providers_Singleton.tp_base = __pyx_ptype_19dependency_injector_9providers_BaseSingleton;
-  if (PyType_Ready(&__pyx_type_19dependency_injector_9providers_Singleton) < 0) __PYX_ERR(1, 1845, __pyx_L1_error)
+  if (PyType_Ready(&__pyx_type_19dependency_injector_9providers_Singleton) < 0) __PYX_ERR(1, 1850, __pyx_L1_error)
   #if PY_VERSION_HEX < 0x030800B1
   __pyx_type_19dependency_injector_9providers_Singleton.tp_print = 0;
   #endif
@@ -69253,7 +69322,7 @@ static int __Pyx_modinit_type_init_code(void) {
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   #if CYTHON_COMPILING_IN_CPYTHON
   {
-    PyObject *wrapper = PyObject_GetAttrString((PyObject *)&__pyx_type_19dependency_injector_9providers_Singleton, "__init__"); if (unlikely(!wrapper)) __PYX_ERR(1, 1845, __pyx_L1_error)
+    PyObject *wrapper = PyObject_GetAttrString((PyObject *)&__pyx_type_19dependency_injector_9providers_Singleton, "__init__"); if (unlikely(!wrapper)) __PYX_ERR(1, 1850, __pyx_L1_error)
     if (Py_TYPE(wrapper) == &PyWrapperDescr_Type) {
       __pyx_wrapperbase_19dependency_injector_9providers_9Singleton___init__ = *((PyWrapperDescrObject *)wrapper)->d_base;
       __pyx_wrapperbase_19dependency_injector_9providers_9Singleton___init__.doc = __pyx_doc_19dependency_injector_9providers_9Singleton___init__;
@@ -69261,29 +69330,29 @@ static int __Pyx_modinit_type_init_code(void) {
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   }
   #endif
-  if (__Pyx_SetVtable(__pyx_type_19dependency_injector_9providers_Singleton.tp_dict, __pyx_vtabptr_19dependency_injector_9providers_Singleton) < 0) __PYX_ERR(1, 1845, __pyx_L1_error)
-  if (PyObject_SetAttr(__pyx_m, __pyx_n_s_Singleton, (PyObject *)&__pyx_type_19dependency_injector_9providers_Singleton) < 0) __PYX_ERR(1, 1845, __pyx_L1_error)
-  if (__Pyx_setup_reduce((PyObject*)&__pyx_type_19dependency_injector_9providers_Singleton) < 0) __PYX_ERR(1, 1845, __pyx_L1_error)
+  if (__Pyx_SetVtable(__pyx_type_19dependency_injector_9providers_Singleton.tp_dict, __pyx_vtabptr_19dependency_injector_9providers_Singleton) < 0) __PYX_ERR(1, 1850, __pyx_L1_error)
+  if (PyObject_SetAttr(__pyx_m, __pyx_n_s_Singleton, (PyObject *)&__pyx_type_19dependency_injector_9providers_Singleton) < 0) __PYX_ERR(1, 1850, __pyx_L1_error)
+  if (__Pyx_setup_reduce((PyObject*)&__pyx_type_19dependency_injector_9providers_Singleton) < 0) __PYX_ERR(1, 1850, __pyx_L1_error)
   __pyx_ptype_19dependency_injector_9providers_Singleton = &__pyx_type_19dependency_injector_9providers_Singleton;
   __pyx_vtabptr_19dependency_injector_9providers_DelegatedSingleton = &__pyx_vtable_19dependency_injector_9providers_DelegatedSingleton;
   __pyx_vtable_19dependency_injector_9providers_DelegatedSingleton.__pyx_base = *__pyx_vtabptr_19dependency_injector_9providers_Singleton;
   __pyx_type_19dependency_injector_9providers_DelegatedSingleton.tp_base = __pyx_ptype_19dependency_injector_9providers_Singleton;
-  if (PyType_Ready(&__pyx_type_19dependency_injector_9providers_DelegatedSingleton) < 0) __PYX_ERR(1, 1901, __pyx_L1_error)
+  if (PyType_Ready(&__pyx_type_19dependency_injector_9providers_DelegatedSingleton) < 0) __PYX_ERR(1, 1906, __pyx_L1_error)
   #if PY_VERSION_HEX < 0x030800B1
   __pyx_type_19dependency_injector_9providers_DelegatedSingleton.tp_print = 0;
   #endif
   if ((CYTHON_USE_TYPE_SLOTS && CYTHON_USE_PYTYPE_LOOKUP) && likely(!__pyx_type_19dependency_injector_9providers_DelegatedSingleton.tp_dictoffset && __pyx_type_19dependency_injector_9providers_DelegatedSingleton.tp_getattro == PyObject_GenericGetAttr)) {
     __pyx_type_19dependency_injector_9providers_DelegatedSingleton.tp_getattro = __Pyx_PyObject_GenericGetAttr;
   }
-  if (__Pyx_SetVtable(__pyx_type_19dependency_injector_9providers_DelegatedSingleton.tp_dict, __pyx_vtabptr_19dependency_injector_9providers_DelegatedSingleton) < 0) __PYX_ERR(1, 1901, __pyx_L1_error)
-  if (PyObject_SetAttr(__pyx_m, __pyx_n_s_DelegatedSingleton, (PyObject *)&__pyx_type_19dependency_injector_9providers_DelegatedSingleton) < 0) __PYX_ERR(1, 1901, __pyx_L1_error)
-  if (__Pyx_setup_reduce((PyObject*)&__pyx_type_19dependency_injector_9providers_DelegatedSingleton) < 0) __PYX_ERR(1, 1901, __pyx_L1_error)
+  if (__Pyx_SetVtable(__pyx_type_19dependency_injector_9providers_DelegatedSingleton.tp_dict, __pyx_vtabptr_19dependency_injector_9providers_DelegatedSingleton) < 0) __PYX_ERR(1, 1906, __pyx_L1_error)
+  if (PyObject_SetAttr(__pyx_m, __pyx_n_s_DelegatedSingleton, (PyObject *)&__pyx_type_19dependency_injector_9providers_DelegatedSingleton) < 0) __PYX_ERR(1, 1906, __pyx_L1_error)
+  if (__Pyx_setup_reduce((PyObject*)&__pyx_type_19dependency_injector_9providers_DelegatedSingleton) < 0) __PYX_ERR(1, 1906, __pyx_L1_error)
   __pyx_ptype_19dependency_injector_9providers_DelegatedSingleton = &__pyx_type_19dependency_injector_9providers_DelegatedSingleton;
   __pyx_vtabptr_19dependency_injector_9providers_ThreadSafeSingleton = &__pyx_vtable_19dependency_injector_9providers_ThreadSafeSingleton;
   __pyx_vtable_19dependency_injector_9providers_ThreadSafeSingleton.__pyx_base = *__pyx_vtabptr_19dependency_injector_9providers_BaseSingleton;
   __pyx_vtable_19dependency_injector_9providers_ThreadSafeSingleton.__pyx_base.__pyx_base._provide = (PyObject *(*)(struct __pyx_obj_19dependency_injector_9providers_Provider *, PyObject *, PyObject *, int __pyx_skip_dispatch))__pyx_f_19dependency_injector_9providers_19ThreadSafeSingleton__provide;
   __pyx_type_19dependency_injector_9providers_ThreadSafeSingleton.tp_base = __pyx_ptype_19dependency_injector_9providers_BaseSingleton;
-  if (PyType_Ready(&__pyx_type_19dependency_injector_9providers_ThreadSafeSingleton) < 0) __PYX_ERR(1, 1923, __pyx_L1_error)
+  if (PyType_Ready(&__pyx_type_19dependency_injector_9providers_ThreadSafeSingleton) < 0) __PYX_ERR(1, 1928, __pyx_L1_error)
   #if PY_VERSION_HEX < 0x030800B1
   __pyx_type_19dependency_injector_9providers_ThreadSafeSingleton.tp_print = 0;
   #endif
@@ -69292,7 +69361,7 @@ static int __Pyx_modinit_type_init_code(void) {
   }
   #if CYTHON_COMPILING_IN_CPYTHON
   {
-    PyObject *wrapper = PyObject_GetAttrString((PyObject *)&__pyx_type_19dependency_injector_9providers_ThreadSafeSingleton, "__init__"); if (unlikely(!wrapper)) __PYX_ERR(1, 1923, __pyx_L1_error)
+    PyObject *wrapper = PyObject_GetAttrString((PyObject *)&__pyx_type_19dependency_injector_9providers_ThreadSafeSingleton, "__init__"); if (unlikely(!wrapper)) __PYX_ERR(1, 1928, __pyx_L1_error)
     if (Py_TYPE(wrapper) == &PyWrapperDescr_Type) {
       __pyx_wrapperbase_19dependency_injector_9providers_19ThreadSafeSingleton___init__ = *((PyWrapperDescrObject *)wrapper)->d_base;
       __pyx_wrapperbase_19dependency_injector_9providers_19ThreadSafeSingleton___init__.doc = __pyx_doc_19dependency_injector_9providers_19ThreadSafeSingleton___init__;
@@ -69300,29 +69369,29 @@ static int __Pyx_modinit_type_init_code(void) {
     }
   }
   #endif
-  if (__Pyx_SetVtable(__pyx_type_19dependency_injector_9providers_ThreadSafeSingleton.tp_dict, __pyx_vtabptr_19dependency_injector_9providers_ThreadSafeSingleton) < 0) __PYX_ERR(1, 1923, __pyx_L1_error)
-  if (PyObject_SetAttr(__pyx_m, __pyx_n_s_ThreadSafeSingleton, (PyObject *)&__pyx_type_19dependency_injector_9providers_ThreadSafeSingleton) < 0) __PYX_ERR(1, 1923, __pyx_L1_error)
-  if (__Pyx_setup_reduce((PyObject*)&__pyx_type_19dependency_injector_9providers_ThreadSafeSingleton) < 0) __PYX_ERR(1, 1923, __pyx_L1_error)
+  if (__Pyx_SetVtable(__pyx_type_19dependency_injector_9providers_ThreadSafeSingleton.tp_dict, __pyx_vtabptr_19dependency_injector_9providers_ThreadSafeSingleton) < 0) __PYX_ERR(1, 1928, __pyx_L1_error)
+  if (PyObject_SetAttr(__pyx_m, __pyx_n_s_ThreadSafeSingleton, (PyObject *)&__pyx_type_19dependency_injector_9providers_ThreadSafeSingleton) < 0) __PYX_ERR(1, 1928, __pyx_L1_error)
+  if (__Pyx_setup_reduce((PyObject*)&__pyx_type_19dependency_injector_9providers_ThreadSafeSingleton) < 0) __PYX_ERR(1, 1928, __pyx_L1_error)
   __pyx_ptype_19dependency_injector_9providers_ThreadSafeSingleton = &__pyx_type_19dependency_injector_9providers_ThreadSafeSingleton;
   __pyx_vtabptr_19dependency_injector_9providers_DelegatedThreadSafeSingleton = &__pyx_vtable_19dependency_injector_9providers_DelegatedThreadSafeSingleton;
   __pyx_vtable_19dependency_injector_9providers_DelegatedThreadSafeSingleton.__pyx_base = *__pyx_vtabptr_19dependency_injector_9providers_ThreadSafeSingleton;
   __pyx_type_19dependency_injector_9providers_DelegatedThreadSafeSingleton.tp_base = __pyx_ptype_19dependency_injector_9providers_ThreadSafeSingleton;
-  if (PyType_Ready(&__pyx_type_19dependency_injector_9providers_DelegatedThreadSafeSingleton) < 0) __PYX_ERR(1, 1958, __pyx_L1_error)
+  if (PyType_Ready(&__pyx_type_19dependency_injector_9providers_DelegatedThreadSafeSingleton) < 0) __PYX_ERR(1, 1963, __pyx_L1_error)
   #if PY_VERSION_HEX < 0x030800B1
   __pyx_type_19dependency_injector_9providers_DelegatedThreadSafeSingleton.tp_print = 0;
   #endif
   if ((CYTHON_USE_TYPE_SLOTS && CYTHON_USE_PYTYPE_LOOKUP) && likely(!__pyx_type_19dependency_injector_9providers_DelegatedThreadSafeSingleton.tp_dictoffset && __pyx_type_19dependency_injector_9providers_DelegatedThreadSafeSingleton.tp_getattro == PyObject_GenericGetAttr)) {
     __pyx_type_19dependency_injector_9providers_DelegatedThreadSafeSingleton.tp_getattro = __Pyx_PyObject_GenericGetAttr;
   }
-  if (__Pyx_SetVtable(__pyx_type_19dependency_injector_9providers_DelegatedThreadSafeSingleton.tp_dict, __pyx_vtabptr_19dependency_injector_9providers_DelegatedThreadSafeSingleton) < 0) __PYX_ERR(1, 1958, __pyx_L1_error)
-  if (PyObject_SetAttr(__pyx_m, __pyx_n_s_DelegatedThreadSafeSingleton, (PyObject *)&__pyx_type_19dependency_injector_9providers_DelegatedThreadSafeSingleton) < 0) __PYX_ERR(1, 1958, __pyx_L1_error)
-  if (__Pyx_setup_reduce((PyObject*)&__pyx_type_19dependency_injector_9providers_DelegatedThreadSafeSingleton) < 0) __PYX_ERR(1, 1958, __pyx_L1_error)
+  if (__Pyx_SetVtable(__pyx_type_19dependency_injector_9providers_DelegatedThreadSafeSingleton.tp_dict, __pyx_vtabptr_19dependency_injector_9providers_DelegatedThreadSafeSingleton) < 0) __PYX_ERR(1, 1963, __pyx_L1_error)
+  if (PyObject_SetAttr(__pyx_m, __pyx_n_s_DelegatedThreadSafeSingleton, (PyObject *)&__pyx_type_19dependency_injector_9providers_DelegatedThreadSafeSingleton) < 0) __PYX_ERR(1, 1963, __pyx_L1_error)
+  if (__Pyx_setup_reduce((PyObject*)&__pyx_type_19dependency_injector_9providers_DelegatedThreadSafeSingleton) < 0) __PYX_ERR(1, 1963, __pyx_L1_error)
   __pyx_ptype_19dependency_injector_9providers_DelegatedThreadSafeSingleton = &__pyx_type_19dependency_injector_9providers_DelegatedThreadSafeSingleton;
   __pyx_vtabptr_19dependency_injector_9providers_ThreadLocalSingleton = &__pyx_vtable_19dependency_injector_9providers_ThreadLocalSingleton;
   __pyx_vtable_19dependency_injector_9providers_ThreadLocalSingleton.__pyx_base = *__pyx_vtabptr_19dependency_injector_9providers_BaseSingleton;
   __pyx_vtable_19dependency_injector_9providers_ThreadLocalSingleton.__pyx_base.__pyx_base._provide = (PyObject *(*)(struct __pyx_obj_19dependency_injector_9providers_Provider *, PyObject *, PyObject *, int __pyx_skip_dispatch))__pyx_f_19dependency_injector_9providers_20ThreadLocalSingleton__provide;
   __pyx_type_19dependency_injector_9providers_ThreadLocalSingleton.tp_base = __pyx_ptype_19dependency_injector_9providers_BaseSingleton;
-  if (PyType_Ready(&__pyx_type_19dependency_injector_9providers_ThreadLocalSingleton) < 0) __PYX_ERR(1, 1980, __pyx_L1_error)
+  if (PyType_Ready(&__pyx_type_19dependency_injector_9providers_ThreadLocalSingleton) < 0) __PYX_ERR(1, 1985, __pyx_L1_error)
   #if PY_VERSION_HEX < 0x030800B1
   __pyx_type_19dependency_injector_9providers_ThreadLocalSingleton.tp_print = 0;
   #endif
@@ -69331,7 +69400,7 @@ static int __Pyx_modinit_type_init_code(void) {
   }
   #if CYTHON_COMPILING_IN_CPYTHON
   {
-    PyObject *wrapper = PyObject_GetAttrString((PyObject *)&__pyx_type_19dependency_injector_9providers_ThreadLocalSingleton, "__init__"); if (unlikely(!wrapper)) __PYX_ERR(1, 1980, __pyx_L1_error)
+    PyObject *wrapper = PyObject_GetAttrString((PyObject *)&__pyx_type_19dependency_injector_9providers_ThreadLocalSingleton, "__init__"); if (unlikely(!wrapper)) __PYX_ERR(1, 1985, __pyx_L1_error)
     if (Py_TYPE(wrapper) == &PyWrapperDescr_Type) {
       __pyx_wrapperbase_19dependency_injector_9providers_20ThreadLocalSingleton___init__ = *((PyWrapperDescrObject *)wrapper)->d_base;
       __pyx_wrapperbase_19dependency_injector_9providers_20ThreadLocalSingleton___init__.doc = __pyx_doc_19dependency_injector_9providers_20ThreadLocalSingleton___init__;
@@ -69339,28 +69408,28 @@ static int __Pyx_modinit_type_init_code(void) {
     }
   }
   #endif
-  if (__Pyx_SetVtable(__pyx_type_19dependency_injector_9providers_ThreadLocalSingleton.tp_dict, __pyx_vtabptr_19dependency_injector_9providers_ThreadLocalSingleton) < 0) __PYX_ERR(1, 1980, __pyx_L1_error)
-  if (PyObject_SetAttr(__pyx_m, __pyx_n_s_ThreadLocalSingleton, (PyObject *)&__pyx_type_19dependency_injector_9providers_ThreadLocalSingleton) < 0) __PYX_ERR(1, 1980, __pyx_L1_error)
-  if (__Pyx_setup_reduce((PyObject*)&__pyx_type_19dependency_injector_9providers_ThreadLocalSingleton) < 0) __PYX_ERR(1, 1980, __pyx_L1_error)
+  if (__Pyx_SetVtable(__pyx_type_19dependency_injector_9providers_ThreadLocalSingleton.tp_dict, __pyx_vtabptr_19dependency_injector_9providers_ThreadLocalSingleton) < 0) __PYX_ERR(1, 1985, __pyx_L1_error)
+  if (PyObject_SetAttr(__pyx_m, __pyx_n_s_ThreadLocalSingleton, (PyObject *)&__pyx_type_19dependency_injector_9providers_ThreadLocalSingleton) < 0) __PYX_ERR(1, 1985, __pyx_L1_error)
+  if (__Pyx_setup_reduce((PyObject*)&__pyx_type_19dependency_injector_9providers_ThreadLocalSingleton) < 0) __PYX_ERR(1, 1985, __pyx_L1_error)
   __pyx_ptype_19dependency_injector_9providers_ThreadLocalSingleton = &__pyx_type_19dependency_injector_9providers_ThreadLocalSingleton;
   __pyx_vtabptr_19dependency_injector_9providers_DelegatedThreadLocalSingleton = &__pyx_vtable_19dependency_injector_9providers_DelegatedThreadLocalSingleton;
   __pyx_vtable_19dependency_injector_9providers_DelegatedThreadLocalSingleton.__pyx_base = *__pyx_vtabptr_19dependency_injector_9providers_ThreadLocalSingleton;
   __pyx_type_19dependency_injector_9providers_DelegatedThreadLocalSingleton.tp_base = __pyx_ptype_19dependency_injector_9providers_ThreadLocalSingleton;
-  if (PyType_Ready(&__pyx_type_19dependency_injector_9providers_DelegatedThreadLocalSingleton) < 0) __PYX_ERR(1, 2028, __pyx_L1_error)
+  if (PyType_Ready(&__pyx_type_19dependency_injector_9providers_DelegatedThreadLocalSingleton) < 0) __PYX_ERR(1, 2033, __pyx_L1_error)
   #if PY_VERSION_HEX < 0x030800B1
   __pyx_type_19dependency_injector_9providers_DelegatedThreadLocalSingleton.tp_print = 0;
   #endif
   if ((CYTHON_USE_TYPE_SLOTS && CYTHON_USE_PYTYPE_LOOKUP) && likely(!__pyx_type_19dependency_injector_9providers_DelegatedThreadLocalSingleton.tp_dictoffset && __pyx_type_19dependency_injector_9providers_DelegatedThreadLocalSingleton.tp_getattro == PyObject_GenericGetAttr)) {
     __pyx_type_19dependency_injector_9providers_DelegatedThreadLocalSingleton.tp_getattro = __Pyx_PyObject_GenericGetAttr;
   }
-  if (__Pyx_SetVtable(__pyx_type_19dependency_injector_9providers_DelegatedThreadLocalSingleton.tp_dict, __pyx_vtabptr_19dependency_injector_9providers_DelegatedThreadLocalSingleton) < 0) __PYX_ERR(1, 2028, __pyx_L1_error)
-  if (PyObject_SetAttr(__pyx_m, __pyx_n_s_DelegatedThreadLocalSingleton, (PyObject *)&__pyx_type_19dependency_injector_9providers_DelegatedThreadLocalSingleton) < 0) __PYX_ERR(1, 2028, __pyx_L1_error)
-  if (__Pyx_setup_reduce((PyObject*)&__pyx_type_19dependency_injector_9providers_DelegatedThreadLocalSingleton) < 0) __PYX_ERR(1, 2028, __pyx_L1_error)
+  if (__Pyx_SetVtable(__pyx_type_19dependency_injector_9providers_DelegatedThreadLocalSingleton.tp_dict, __pyx_vtabptr_19dependency_injector_9providers_DelegatedThreadLocalSingleton) < 0) __PYX_ERR(1, 2033, __pyx_L1_error)
+  if (PyObject_SetAttr(__pyx_m, __pyx_n_s_DelegatedThreadLocalSingleton, (PyObject *)&__pyx_type_19dependency_injector_9providers_DelegatedThreadLocalSingleton) < 0) __PYX_ERR(1, 2033, __pyx_L1_error)
+  if (__Pyx_setup_reduce((PyObject*)&__pyx_type_19dependency_injector_9providers_DelegatedThreadLocalSingleton) < 0) __PYX_ERR(1, 2033, __pyx_L1_error)
   __pyx_ptype_19dependency_injector_9providers_DelegatedThreadLocalSingleton = &__pyx_type_19dependency_injector_9providers_DelegatedThreadLocalSingleton;
   __pyx_vtabptr_19dependency_injector_9providers_AbstractSingleton = &__pyx_vtable_19dependency_injector_9providers_AbstractSingleton;
   __pyx_vtable_19dependency_injector_9providers_AbstractSingleton.__pyx_base = *__pyx_vtabptr_19dependency_injector_9providers_BaseSingleton;
   __pyx_type_19dependency_injector_9providers_AbstractSingleton.tp_base = __pyx_ptype_19dependency_injector_9providers_BaseSingleton;
-  if (PyType_Ready(&__pyx_type_19dependency_injector_9providers_AbstractSingleton) < 0) __PYX_ERR(1, 2050, __pyx_L1_error)
+  if (PyType_Ready(&__pyx_type_19dependency_injector_9providers_AbstractSingleton) < 0) __PYX_ERR(1, 2055, __pyx_L1_error)
   #if PY_VERSION_HEX < 0x030800B1
   __pyx_type_19dependency_injector_9providers_AbstractSingleton.tp_print = 0;
   #endif
@@ -69369,7 +69438,7 @@ static int __Pyx_modinit_type_init_code(void) {
   }
   #if CYTHON_COMPILING_IN_CPYTHON
   {
-    PyObject *wrapper = PyObject_GetAttrString((PyObject *)&__pyx_type_19dependency_injector_9providers_AbstractSingleton, "__call__"); if (unlikely(!wrapper)) __PYX_ERR(1, 2050, __pyx_L1_error)
+    PyObject *wrapper = PyObject_GetAttrString((PyObject *)&__pyx_type_19dependency_injector_9providers_AbstractSingleton, "__call__"); if (unlikely(!wrapper)) __PYX_ERR(1, 2055, __pyx_L1_error)
     if (Py_TYPE(wrapper) == &PyWrapperDescr_Type) {
       __pyx_wrapperbase_19dependency_injector_9providers_17AbstractSingleton___call__ = *((PyWrapperDescrObject *)wrapper)->d_base;
       __pyx_wrapperbase_19dependency_injector_9providers_17AbstractSingleton___call__.doc = __pyx_doc_19dependency_injector_9providers_17AbstractSingleton___call__;
@@ -69377,14 +69446,14 @@ static int __Pyx_modinit_type_init_code(void) {
     }
   }
   #endif
-  if (__Pyx_SetVtable(__pyx_type_19dependency_injector_9providers_AbstractSingleton.tp_dict, __pyx_vtabptr_19dependency_injector_9providers_AbstractSingleton) < 0) __PYX_ERR(1, 2050, __pyx_L1_error)
-  if (PyObject_SetAttr(__pyx_m, __pyx_n_s_AbstractSingleton, (PyObject *)&__pyx_type_19dependency_injector_9providers_AbstractSingleton) < 0) __PYX_ERR(1, 2050, __pyx_L1_error)
-  if (__Pyx_setup_reduce((PyObject*)&__pyx_type_19dependency_injector_9providers_AbstractSingleton) < 0) __PYX_ERR(1, 2050, __pyx_L1_error)
+  if (__Pyx_SetVtable(__pyx_type_19dependency_injector_9providers_AbstractSingleton.tp_dict, __pyx_vtabptr_19dependency_injector_9providers_AbstractSingleton) < 0) __PYX_ERR(1, 2055, __pyx_L1_error)
+  if (PyObject_SetAttr(__pyx_m, __pyx_n_s_AbstractSingleton, (PyObject *)&__pyx_type_19dependency_injector_9providers_AbstractSingleton) < 0) __PYX_ERR(1, 2055, __pyx_L1_error)
+  if (__Pyx_setup_reduce((PyObject*)&__pyx_type_19dependency_injector_9providers_AbstractSingleton) < 0) __PYX_ERR(1, 2055, __pyx_L1_error)
   __pyx_ptype_19dependency_injector_9providers_AbstractSingleton = &__pyx_type_19dependency_injector_9providers_AbstractSingleton;
   __pyx_vtabptr_19dependency_injector_9providers_SingletonDelegate = &__pyx_vtable_19dependency_injector_9providers_SingletonDelegate;
   __pyx_vtable_19dependency_injector_9providers_SingletonDelegate.__pyx_base = *__pyx_vtabptr_19dependency_injector_9providers_Delegate;
   __pyx_type_19dependency_injector_9providers_SingletonDelegate.tp_base = __pyx_ptype_19dependency_injector_9providers_Delegate;
-  if (PyType_Ready(&__pyx_type_19dependency_injector_9providers_SingletonDelegate) < 0) __PYX_ERR(1, 2095, __pyx_L1_error)
+  if (PyType_Ready(&__pyx_type_19dependency_injector_9providers_SingletonDelegate) < 0) __PYX_ERR(1, 2100, __pyx_L1_error)
   #if PY_VERSION_HEX < 0x030800B1
   __pyx_type_19dependency_injector_9providers_SingletonDelegate.tp_print = 0;
   #endif
@@ -69393,7 +69462,7 @@ static int __Pyx_modinit_type_init_code(void) {
   }
   #if CYTHON_COMPILING_IN_CPYTHON
   {
-    PyObject *wrapper = PyObject_GetAttrString((PyObject *)&__pyx_type_19dependency_injector_9providers_SingletonDelegate, "__init__"); if (unlikely(!wrapper)) __PYX_ERR(1, 2095, __pyx_L1_error)
+    PyObject *wrapper = PyObject_GetAttrString((PyObject *)&__pyx_type_19dependency_injector_9providers_SingletonDelegate, "__init__"); if (unlikely(!wrapper)) __PYX_ERR(1, 2100, __pyx_L1_error)
     if (Py_TYPE(wrapper) == &PyWrapperDescr_Type) {
       __pyx_wrapperbase_19dependency_injector_9providers_17SingletonDelegate___init__ = *((PyWrapperDescrObject *)wrapper)->d_base;
       __pyx_wrapperbase_19dependency_injector_9providers_17SingletonDelegate___init__.doc = __pyx_doc_19dependency_injector_9providers_17SingletonDelegate___init__;
@@ -69401,15 +69470,15 @@ static int __Pyx_modinit_type_init_code(void) {
     }
   }
   #endif
-  if (__Pyx_SetVtable(__pyx_type_19dependency_injector_9providers_SingletonDelegate.tp_dict, __pyx_vtabptr_19dependency_injector_9providers_SingletonDelegate) < 0) __PYX_ERR(1, 2095, __pyx_L1_error)
-  if (PyObject_SetAttr(__pyx_m, __pyx_n_s_SingletonDelegate, (PyObject *)&__pyx_type_19dependency_injector_9providers_SingletonDelegate) < 0) __PYX_ERR(1, 2095, __pyx_L1_error)
-  if (__Pyx_setup_reduce((PyObject*)&__pyx_type_19dependency_injector_9providers_SingletonDelegate) < 0) __PYX_ERR(1, 2095, __pyx_L1_error)
+  if (__Pyx_SetVtable(__pyx_type_19dependency_injector_9providers_SingletonDelegate.tp_dict, __pyx_vtabptr_19dependency_injector_9providers_SingletonDelegate) < 0) __PYX_ERR(1, 2100, __pyx_L1_error)
+  if (PyObject_SetAttr(__pyx_m, __pyx_n_s_SingletonDelegate, (PyObject *)&__pyx_type_19dependency_injector_9providers_SingletonDelegate) < 0) __PYX_ERR(1, 2100, __pyx_L1_error)
+  if (__Pyx_setup_reduce((PyObject*)&__pyx_type_19dependency_injector_9providers_SingletonDelegate) < 0) __PYX_ERR(1, 2100, __pyx_L1_error)
   __pyx_ptype_19dependency_injector_9providers_SingletonDelegate = &__pyx_type_19dependency_injector_9providers_SingletonDelegate;
   __pyx_vtabptr_19dependency_injector_9providers_List = &__pyx_vtable_19dependency_injector_9providers_List;
   __pyx_vtable_19dependency_injector_9providers_List.__pyx_base = *__pyx_vtabptr_19dependency_injector_9providers_Provider;
   __pyx_vtable_19dependency_injector_9providers_List.__pyx_base._provide = (PyObject *(*)(struct __pyx_obj_19dependency_injector_9providers_Provider *, PyObject *, PyObject *, int __pyx_skip_dispatch))__pyx_f_19dependency_injector_9providers_4List__provide;
   __pyx_type_19dependency_injector_9providers_List.tp_base = __pyx_ptype_19dependency_injector_9providers_Provider;
-  if (PyType_Ready(&__pyx_type_19dependency_injector_9providers_List) < 0) __PYX_ERR(1, 2117, __pyx_L1_error)
+  if (PyType_Ready(&__pyx_type_19dependency_injector_9providers_List) < 0) __PYX_ERR(1, 2122, __pyx_L1_error)
   #if PY_VERSION_HEX < 0x030800B1
   __pyx_type_19dependency_injector_9providers_List.tp_print = 0;
   #endif
@@ -69418,7 +69487,7 @@ static int __Pyx_modinit_type_init_code(void) {
   }
   #if CYTHON_COMPILING_IN_CPYTHON
   {
-    PyObject *wrapper = PyObject_GetAttrString((PyObject *)&__pyx_type_19dependency_injector_9providers_List, "__init__"); if (unlikely(!wrapper)) __PYX_ERR(1, 2117, __pyx_L1_error)
+    PyObject *wrapper = PyObject_GetAttrString((PyObject *)&__pyx_type_19dependency_injector_9providers_List, "__init__"); if (unlikely(!wrapper)) __PYX_ERR(1, 2122, __pyx_L1_error)
     if (Py_TYPE(wrapper) == &PyWrapperDescr_Type) {
       __pyx_wrapperbase_19dependency_injector_9providers_4List___init__ = *((PyWrapperDescrObject *)wrapper)->d_base;
       __pyx_wrapperbase_19dependency_injector_9providers_4List___init__.doc = __pyx_doc_19dependency_injector_9providers_4List___init__;
@@ -69428,7 +69497,7 @@ static int __Pyx_modinit_type_init_code(void) {
   #endif
   #if CYTHON_COMPILING_IN_CPYTHON
   {
-    PyObject *wrapper = PyObject_GetAttrString((PyObject *)&__pyx_type_19dependency_injector_9providers_List, "__str__"); if (unlikely(!wrapper)) __PYX_ERR(1, 2117, __pyx_L1_error)
+    PyObject *wrapper = PyObject_GetAttrString((PyObject *)&__pyx_type_19dependency_injector_9providers_List, "__str__"); if (unlikely(!wrapper)) __PYX_ERR(1, 2122, __pyx_L1_error)
     if (Py_TYPE(wrapper) == &PyWrapperDescr_Type) {
       __pyx_wrapperbase_19dependency_injector_9providers_4List_4__str__ = *((PyWrapperDescrObject *)wrapper)->d_base;
       __pyx_wrapperbase_19dependency_injector_9providers_4List_4__str__.doc = __pyx_doc_19dependency_injector_9providers_4List_4__str__;
@@ -69436,21 +69505,21 @@ static int __Pyx_modinit_type_init_code(void) {
     }
   }
   #endif
-  if (__Pyx_SetVtable(__pyx_type_19dependency_injector_9providers_List.tp_dict, __pyx_vtabptr_19dependency_injector_9providers_List) < 0) __PYX_ERR(1, 2117, __pyx_L1_error)
-  if (PyObject_SetAttr(__pyx_m, __pyx_n_s_List, (PyObject *)&__pyx_type_19dependency_injector_9providers_List) < 0) __PYX_ERR(1, 2117, __pyx_L1_error)
-  if (__Pyx_setup_reduce((PyObject*)&__pyx_type_19dependency_injector_9providers_List) < 0) __PYX_ERR(1, 2117, __pyx_L1_error)
+  if (__Pyx_SetVtable(__pyx_type_19dependency_injector_9providers_List.tp_dict, __pyx_vtabptr_19dependency_injector_9providers_List) < 0) __PYX_ERR(1, 2122, __pyx_L1_error)
+  if (PyObject_SetAttr(__pyx_m, __pyx_n_s_List, (PyObject *)&__pyx_type_19dependency_injector_9providers_List) < 0) __PYX_ERR(1, 2122, __pyx_L1_error)
+  if (__Pyx_setup_reduce((PyObject*)&__pyx_type_19dependency_injector_9providers_List) < 0) __PYX_ERR(1, 2122, __pyx_L1_error)
   __pyx_ptype_19dependency_injector_9providers_List = &__pyx_type_19dependency_injector_9providers_List;
   __pyx_vtabptr_19dependency_injector_9providers_Container = &__pyx_vtable_19dependency_injector_9providers_Container;
   __pyx_vtable_19dependency_injector_9providers_Container.__pyx_base = *__pyx_vtabptr_19dependency_injector_9providers_Provider;
   __pyx_vtable_19dependency_injector_9providers_Container.__pyx_base._provide = (PyObject *(*)(struct __pyx_obj_19dependency_injector_9providers_Provider *, PyObject *, PyObject *, int __pyx_skip_dispatch))__pyx_f_19dependency_injector_9providers_9Container__provide;
   __pyx_type_19dependency_injector_9providers_Container.tp_base = __pyx_ptype_19dependency_injector_9providers_Provider;
-  if (PyType_Ready(&__pyx_type_19dependency_injector_9providers_Container) < 0) __PYX_ERR(1, 2219, __pyx_L1_error)
+  if (PyType_Ready(&__pyx_type_19dependency_injector_9providers_Container) < 0) __PYX_ERR(1, 2224, __pyx_L1_error)
   #if PY_VERSION_HEX < 0x030800B1
   __pyx_type_19dependency_injector_9providers_Container.tp_print = 0;
   #endif
   #if CYTHON_COMPILING_IN_CPYTHON
   {
-    PyObject *wrapper = PyObject_GetAttrString((PyObject *)&__pyx_type_19dependency_injector_9providers_Container, "__init__"); if (unlikely(!wrapper)) __PYX_ERR(1, 2219, __pyx_L1_error)
+    PyObject *wrapper = PyObject_GetAttrString((PyObject *)&__pyx_type_19dependency_injector_9providers_Container, "__init__"); if (unlikely(!wrapper)) __PYX_ERR(1, 2224, __pyx_L1_error)
     if (Py_TYPE(wrapper) == &PyWrapperDescr_Type) {
       __pyx_wrapperbase_19dependency_injector_9providers_9Container___init__ = *((PyWrapperDescrObject *)wrapper)->d_base;
       __pyx_wrapperbase_19dependency_injector_9providers_9Container___init__.doc = __pyx_doc_19dependency_injector_9providers_9Container___init__;
@@ -69460,7 +69529,7 @@ static int __Pyx_modinit_type_init_code(void) {
   #endif
   #if CYTHON_COMPILING_IN_CPYTHON
   {
-    PyObject *wrapper = PyObject_GetAttrString((PyObject *)&__pyx_type_19dependency_injector_9providers_Container, "__getattr__"); if (unlikely(!wrapper)) __PYX_ERR(1, 2219, __pyx_L1_error)
+    PyObject *wrapper = PyObject_GetAttrString((PyObject *)&__pyx_type_19dependency_injector_9providers_Container, "__getattr__"); if (unlikely(!wrapper)) __PYX_ERR(1, 2224, __pyx_L1_error)
     if (Py_TYPE(wrapper) == &PyWrapperDescr_Type) {
       __pyx_wrapperbase_19dependency_injector_9providers_9Container_4__getattr__ = *((PyWrapperDescrObject *)wrapper)->d_base;
       __pyx_wrapperbase_19dependency_injector_9providers_9Container_4__getattr__.doc = __pyx_doc_19dependency_injector_9providers_9Container_4__getattr__;
@@ -69468,21 +69537,21 @@ static int __Pyx_modinit_type_init_code(void) {
     }
   }
   #endif
-  if (__Pyx_SetVtable(__pyx_type_19dependency_injector_9providers_Container.tp_dict, __pyx_vtabptr_19dependency_injector_9providers_Container) < 0) __PYX_ERR(1, 2219, __pyx_L1_error)
-  if (PyObject_SetAttr(__pyx_m, __pyx_n_s_Container, (PyObject *)&__pyx_type_19dependency_injector_9providers_Container) < 0) __PYX_ERR(1, 2219, __pyx_L1_error)
-  if (__Pyx_setup_reduce((PyObject*)&__pyx_type_19dependency_injector_9providers_Container) < 0) __PYX_ERR(1, 2219, __pyx_L1_error)
+  if (__Pyx_SetVtable(__pyx_type_19dependency_injector_9providers_Container.tp_dict, __pyx_vtabptr_19dependency_injector_9providers_Container) < 0) __PYX_ERR(1, 2224, __pyx_L1_error)
+  if (PyObject_SetAttr(__pyx_m, __pyx_n_s_Container, (PyObject *)&__pyx_type_19dependency_injector_9providers_Container) < 0) __PYX_ERR(1, 2224, __pyx_L1_error)
+  if (__Pyx_setup_reduce((PyObject*)&__pyx_type_19dependency_injector_9providers_Container) < 0) __PYX_ERR(1, 2224, __pyx_L1_error)
   __pyx_ptype_19dependency_injector_9providers_Container = &__pyx_type_19dependency_injector_9providers_Container;
   __pyx_vtabptr_19dependency_injector_9providers_Selector = &__pyx_vtable_19dependency_injector_9providers_Selector;
   __pyx_vtable_19dependency_injector_9providers_Selector.__pyx_base = *__pyx_vtabptr_19dependency_injector_9providers_Provider;
   __pyx_vtable_19dependency_injector_9providers_Selector.__pyx_base._provide = (PyObject *(*)(struct __pyx_obj_19dependency_injector_9providers_Provider *, PyObject *, PyObject *, int __pyx_skip_dispatch))__pyx_f_19dependency_injector_9providers_8Selector__provide;
   __pyx_type_19dependency_injector_9providers_Selector.tp_base = __pyx_ptype_19dependency_injector_9providers_Provider;
-  if (PyType_Ready(&__pyx_type_19dependency_injector_9providers_Selector) < 0) __PYX_ERR(1, 2270, __pyx_L1_error)
+  if (PyType_Ready(&__pyx_type_19dependency_injector_9providers_Selector) < 0) __PYX_ERR(1, 2275, __pyx_L1_error)
   #if PY_VERSION_HEX < 0x030800B1
   __pyx_type_19dependency_injector_9providers_Selector.tp_print = 0;
   #endif
   #if CYTHON_COMPILING_IN_CPYTHON
   {
-    PyObject *wrapper = PyObject_GetAttrString((PyObject *)&__pyx_type_19dependency_injector_9providers_Selector, "__init__"); if (unlikely(!wrapper)) __PYX_ERR(1, 2270, __pyx_L1_error)
+    PyObject *wrapper = PyObject_GetAttrString((PyObject *)&__pyx_type_19dependency_injector_9providers_Selector, "__init__"); if (unlikely(!wrapper)) __PYX_ERR(1, 2275, __pyx_L1_error)
     if (Py_TYPE(wrapper) == &PyWrapperDescr_Type) {
       __pyx_wrapperbase_19dependency_injector_9providers_8Selector___init__ = *((PyWrapperDescrObject *)wrapper)->d_base;
       __pyx_wrapperbase_19dependency_injector_9providers_8Selector___init__.doc = __pyx_doc_19dependency_injector_9providers_8Selector___init__;
@@ -69492,7 +69561,7 @@ static int __Pyx_modinit_type_init_code(void) {
   #endif
   #if CYTHON_COMPILING_IN_CPYTHON
   {
-    PyObject *wrapper = PyObject_GetAttrString((PyObject *)&__pyx_type_19dependency_injector_9providers_Selector, "__getattr__"); if (unlikely(!wrapper)) __PYX_ERR(1, 2270, __pyx_L1_error)
+    PyObject *wrapper = PyObject_GetAttrString((PyObject *)&__pyx_type_19dependency_injector_9providers_Selector, "__getattr__"); if (unlikely(!wrapper)) __PYX_ERR(1, 2275, __pyx_L1_error)
     if (Py_TYPE(wrapper) == &PyWrapperDescr_Type) {
       __pyx_wrapperbase_19dependency_injector_9providers_8Selector_4__getattr__ = *((PyWrapperDescrObject *)wrapper)->d_base;
       __pyx_wrapperbase_19dependency_injector_9providers_8Selector_4__getattr__.doc = __pyx_doc_19dependency_injector_9providers_8Selector_4__getattr__;
@@ -69502,7 +69571,7 @@ static int __Pyx_modinit_type_init_code(void) {
   #endif
   #if CYTHON_COMPILING_IN_CPYTHON
   {
-    PyObject *wrapper = PyObject_GetAttrString((PyObject *)&__pyx_type_19dependency_injector_9providers_Selector, "__str__"); if (unlikely(!wrapper)) __PYX_ERR(1, 2270, __pyx_L1_error)
+    PyObject *wrapper = PyObject_GetAttrString((PyObject *)&__pyx_type_19dependency_injector_9providers_Selector, "__str__"); if (unlikely(!wrapper)) __PYX_ERR(1, 2275, __pyx_L1_error)
     if (Py_TYPE(wrapper) == &PyWrapperDescr_Type) {
       __pyx_wrapperbase_19dependency_injector_9providers_8Selector_6__str__ = *((PyWrapperDescrObject *)wrapper)->d_base;
       __pyx_wrapperbase_19dependency_injector_9providers_8Selector_6__str__.doc = __pyx_doc_19dependency_injector_9providers_8Selector_6__str__;
@@ -69510,22 +69579,22 @@ static int __Pyx_modinit_type_init_code(void) {
     }
   }
   #endif
-  if (__Pyx_SetVtable(__pyx_type_19dependency_injector_9providers_Selector.tp_dict, __pyx_vtabptr_19dependency_injector_9providers_Selector) < 0) __PYX_ERR(1, 2270, __pyx_L1_error)
-  if (PyObject_SetAttr(__pyx_m, __pyx_n_s_Selector, (PyObject *)&__pyx_type_19dependency_injector_9providers_Selector) < 0) __PYX_ERR(1, 2270, __pyx_L1_error)
-  if (__Pyx_setup_reduce((PyObject*)&__pyx_type_19dependency_injector_9providers_Selector) < 0) __PYX_ERR(1, 2270, __pyx_L1_error)
+  if (__Pyx_SetVtable(__pyx_type_19dependency_injector_9providers_Selector.tp_dict, __pyx_vtabptr_19dependency_injector_9providers_Selector) < 0) __PYX_ERR(1, 2275, __pyx_L1_error)
+  if (PyObject_SetAttr(__pyx_m, __pyx_n_s_Selector, (PyObject *)&__pyx_type_19dependency_injector_9providers_Selector) < 0) __PYX_ERR(1, 2275, __pyx_L1_error)
+  if (__Pyx_setup_reduce((PyObject*)&__pyx_type_19dependency_injector_9providers_Selector) < 0) __PYX_ERR(1, 2275, __pyx_L1_error)
   __pyx_ptype_19dependency_injector_9providers_Selector = &__pyx_type_19dependency_injector_9providers_Selector;
-  if (PyType_Ready(&__pyx_type_19dependency_injector_9providers_Injection) < 0) __PYX_ERR(1, 2367, __pyx_L1_error)
+  if (PyType_Ready(&__pyx_type_19dependency_injector_9providers_Injection) < 0) __PYX_ERR(1, 2372, __pyx_L1_error)
   #if PY_VERSION_HEX < 0x030800B1
   __pyx_type_19dependency_injector_9providers_Injection.tp_print = 0;
   #endif
   if ((CYTHON_USE_TYPE_SLOTS && CYTHON_USE_PYTYPE_LOOKUP) && likely(!__pyx_type_19dependency_injector_9providers_Injection.tp_dictoffset && __pyx_type_19dependency_injector_9providers_Injection.tp_getattro == PyObject_GenericGetAttr)) {
     __pyx_type_19dependency_injector_9providers_Injection.tp_getattro = __Pyx_PyObject_GenericGetAttr;
   }
-  if (PyObject_SetAttr(__pyx_m, __pyx_n_s_Injection, (PyObject *)&__pyx_type_19dependency_injector_9providers_Injection) < 0) __PYX_ERR(1, 2367, __pyx_L1_error)
-  if (__Pyx_setup_reduce((PyObject*)&__pyx_type_19dependency_injector_9providers_Injection) < 0) __PYX_ERR(1, 2367, __pyx_L1_error)
+  if (PyObject_SetAttr(__pyx_m, __pyx_n_s_Injection, (PyObject *)&__pyx_type_19dependency_injector_9providers_Injection) < 0) __PYX_ERR(1, 2372, __pyx_L1_error)
+  if (__Pyx_setup_reduce((PyObject*)&__pyx_type_19dependency_injector_9providers_Injection) < 0) __PYX_ERR(1, 2372, __pyx_L1_error)
   __pyx_ptype_19dependency_injector_9providers_Injection = &__pyx_type_19dependency_injector_9providers_Injection;
   __pyx_type_19dependency_injector_9providers_PositionalInjection.tp_base = __pyx_ptype_19dependency_injector_9providers_Injection;
-  if (PyType_Ready(&__pyx_type_19dependency_injector_9providers_PositionalInjection) < 0) __PYX_ERR(1, 2371, __pyx_L1_error)
+  if (PyType_Ready(&__pyx_type_19dependency_injector_9providers_PositionalInjection) < 0) __PYX_ERR(1, 2376, __pyx_L1_error)
   #if PY_VERSION_HEX < 0x030800B1
   __pyx_type_19dependency_injector_9providers_PositionalInjection.tp_print = 0;
   #endif
@@ -69534,7 +69603,7 @@ static int __Pyx_modinit_type_init_code(void) {
   }
   #if CYTHON_COMPILING_IN_CPYTHON
   {
-    PyObject *wrapper = PyObject_GetAttrString((PyObject *)&__pyx_type_19dependency_injector_9providers_PositionalInjection, "__init__"); if (unlikely(!wrapper)) __PYX_ERR(1, 2371, __pyx_L1_error)
+    PyObject *wrapper = PyObject_GetAttrString((PyObject *)&__pyx_type_19dependency_injector_9providers_PositionalInjection, "__init__"); if (unlikely(!wrapper)) __PYX_ERR(1, 2376, __pyx_L1_error)
     if (Py_TYPE(wrapper) == &PyWrapperDescr_Type) {
       __pyx_wrapperbase_19dependency_injector_9providers_19PositionalInjection___init__ = *((PyWrapperDescrObject *)wrapper)->d_base;
       __pyx_wrapperbase_19dependency_injector_9providers_19PositionalInjection___init__.doc = __pyx_doc_19dependency_injector_9providers_19PositionalInjection___init__;
@@ -69542,11 +69611,11 @@ static int __Pyx_modinit_type_init_code(void) {
     }
   }
   #endif
-  if (PyObject_SetAttr(__pyx_m, __pyx_n_s_PositionalInjection, (PyObject *)&__pyx_type_19dependency_injector_9providers_PositionalInjection) < 0) __PYX_ERR(1, 2371, __pyx_L1_error)
-  if (__Pyx_setup_reduce((PyObject*)&__pyx_type_19dependency_injector_9providers_PositionalInjection) < 0) __PYX_ERR(1, 2371, __pyx_L1_error)
+  if (PyObject_SetAttr(__pyx_m, __pyx_n_s_PositionalInjection, (PyObject *)&__pyx_type_19dependency_injector_9providers_PositionalInjection) < 0) __PYX_ERR(1, 2376, __pyx_L1_error)
+  if (__Pyx_setup_reduce((PyObject*)&__pyx_type_19dependency_injector_9providers_PositionalInjection) < 0) __PYX_ERR(1, 2376, __pyx_L1_error)
   __pyx_ptype_19dependency_injector_9providers_PositionalInjection = &__pyx_type_19dependency_injector_9providers_PositionalInjection;
   __pyx_type_19dependency_injector_9providers_NamedInjection.tp_base = __pyx_ptype_19dependency_injector_9providers_Injection;
-  if (PyType_Ready(&__pyx_type_19dependency_injector_9providers_NamedInjection) < 0) __PYX_ERR(1, 2399, __pyx_L1_error)
+  if (PyType_Ready(&__pyx_type_19dependency_injector_9providers_NamedInjection) < 0) __PYX_ERR(1, 2404, __pyx_L1_error)
   #if PY_VERSION_HEX < 0x030800B1
   __pyx_type_19dependency_injector_9providers_NamedInjection.tp_print = 0;
   #endif
@@ -69555,7 +69624,7 @@ static int __Pyx_modinit_type_init_code(void) {
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   #if CYTHON_COMPILING_IN_CPYTHON
   {
-    PyObject *wrapper = PyObject_GetAttrString((PyObject *)&__pyx_type_19dependency_injector_9providers_NamedInjection, "__init__"); if (unlikely(!wrapper)) __PYX_ERR(1, 2399, __pyx_L1_error)
+    PyObject *wrapper = PyObject_GetAttrString((PyObject *)&__pyx_type_19dependency_injector_9providers_NamedInjection, "__init__"); if (unlikely(!wrapper)) __PYX_ERR(1, 2404, __pyx_L1_error)
     if (Py_TYPE(wrapper) == &PyWrapperDescr_Type) {
       __pyx_wrapperbase_19dependency_injector_9providers_14NamedInjection___init__ = *((PyWrapperDescrObject *)wrapper)->d_base;
       __pyx_wrapperbase_19dependency_injector_9providers_14NamedInjection___init__.doc = __pyx_doc_19dependency_injector_9providers_14NamedInjection___init__;
@@ -69563,10 +69632,10 @@ static int __Pyx_modinit_type_init_code(void) {
     }
   }
   #endif
-  if (PyObject_SetAttr(__pyx_m, __pyx_n_s_NamedInjection, (PyObject *)&__pyx_type_19dependency_injector_9providers_NamedInjection) < 0) __PYX_ERR(1, 2399, __pyx_L1_error)
-  if (__Pyx_setup_reduce((PyObject*)&__pyx_type_19dependency_injector_9providers_NamedInjection) < 0) __PYX_ERR(1, 2399, __pyx_L1_error)
+  if (PyObject_SetAttr(__pyx_m, __pyx_n_s_NamedInjection, (PyObject *)&__pyx_type_19dependency_injector_9providers_NamedInjection) < 0) __PYX_ERR(1, 2404, __pyx_L1_error)
+  if (__Pyx_setup_reduce((PyObject*)&__pyx_type_19dependency_injector_9providers_NamedInjection) < 0) __PYX_ERR(1, 2404, __pyx_L1_error)
   __pyx_ptype_19dependency_injector_9providers_NamedInjection = &__pyx_type_19dependency_injector_9providers_NamedInjection;
-  if (PyType_Ready(&__pyx_type_19dependency_injector_9providers___pyx_scope_struct____str__) < 0) __PYX_ERR(1, 2333, __pyx_L1_error)
+  if (PyType_Ready(&__pyx_type_19dependency_injector_9providers___pyx_scope_struct____str__) < 0) __PYX_ERR(1, 2338, __pyx_L1_error)
   #if PY_VERSION_HEX < 0x030800B1
   __pyx_type_19dependency_injector_9providers___pyx_scope_struct____str__.tp_print = 0;
   #endif
@@ -69574,7 +69643,7 @@ static int __Pyx_modinit_type_init_code(void) {
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   }
   __pyx_ptype_19dependency_injector_9providers___pyx_scope_struct____str__ = &__pyx_type_19dependency_injector_9providers___pyx_scope_struct____str__;
-  if (PyType_Ready(&__pyx_type_19dependency_injector_9providers___pyx_scope_struct_1_genexpr) < 0) __PYX_ERR(1, 2343, __pyx_L1_error)
+  if (PyType_Ready(&__pyx_type_19dependency_injector_9providers___pyx_scope_struct_1_genexpr) < 0) __PYX_ERR(1, 2348, __pyx_L1_error)
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@@ -70753,56 +70822,56 @@ if (!__Pyx_RefNanny) {
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   PyType_Modified(__pyx_ptype_19dependency_injector_9providers_Factory);
 
-  /* "dependency_injector/providers.pyx":1539
+  /* "dependency_injector/providers.pyx":1544
  *     """
  * 
  *     __IS_DELEGATED__ = True             # <<<<<<<<<<<<<<
  * 
  * 
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-  if (PyDict_SetItem((PyObject *)__pyx_ptype_19dependency_injector_9providers_DelegatedFactory->tp_dict, __pyx_n_s_IS_DELEGATED, Py_True) < 0) __PYX_ERR(1, 1539, __pyx_L1_error)
+  if (PyDict_SetItem((PyObject *)__pyx_ptype_19dependency_injector_9providers_DelegatedFactory->tp_dict, __pyx_n_s_IS_DELEGATED, Py_True) < 0) __PYX_ERR(1, 1544, __pyx_L1_error)
   PyType_Modified(__pyx_ptype_19dependency_injector_9providers_DelegatedFactory);
 
-  /* "dependency_injector/providers.pyx":1619
+  /* "dependency_injector/providers.pyx":1624
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  * 
  *     __IS_DELEGATED__ = True             # <<<<<<<<<<<<<<
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-  if (PyDict_SetItem((PyObject *)__pyx_ptype_19dependency_injector_9providers_FactoryAggregate->tp_dict, __pyx_n_s_IS_DELEGATED, Py_True) < 0) __PYX_ERR(1, 1619, __pyx_L1_error)
+  if (PyDict_SetItem((PyObject *)__pyx_ptype_19dependency_injector_9providers_FactoryAggregate->tp_dict, __pyx_n_s_IS_DELEGATED, Py_True) < 0) __PYX_ERR(1, 1624, __pyx_L1_error)
   PyType_Modified(__pyx_ptype_19dependency_injector_9providers_FactoryAggregate);
 
-  /* "dependency_injector/providers.pyx":1695
+  /* "dependency_injector/providers.pyx":1700
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  * 
  *     provided_type = None             # <<<<<<<<<<<<<<
  * 
  *     def __init__(self, provides, *args, **kwargs):
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   PyType_Modified(__pyx_ptype_19dependency_injector_9providers_BaseSingleton);
 
-  /* "dependency_injector/providers.pyx":1920
+  /* "dependency_injector/providers.pyx":1925
  *     """
  * 
  *     __IS_DELEGATED__ = True             # <<<<<<<<<<<<<<
  * 
  * 
  */
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   PyType_Modified(__pyx_ptype_19dependency_injector_9providers_DelegatedSingleton);
 
-  /* "dependency_injector/providers.pyx":1926
+  /* "dependency_injector/providers.pyx":1931
  *     """Thread-safe singleton provider."""
  * 
  *     storage_lock = threading.RLock()             # <<<<<<<<<<<<<<
  *     """Storage reentrant lock.
  * 
  */
-  __Pyx_GetModuleGlobalName(__pyx_t_1, __pyx_n_s_threading); if (unlikely(!__pyx_t_1)) __PYX_ERR(1, 1926, __pyx_L1_error)
+  __Pyx_GetModuleGlobalName(__pyx_t_1, __pyx_n_s_threading); if (unlikely(!__pyx_t_1)) __PYX_ERR(1, 1931, __pyx_L1_error)
   __Pyx_GOTREF(__pyx_t_1);
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+  __pyx_t_8 = __Pyx_PyObject_GetAttrStr(__pyx_t_1, __pyx_n_s_RLock); if (unlikely(!__pyx_t_8)) __PYX_ERR(1, 1931, __pyx_L1_error)
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+  if (PyDict_SetItem((PyObject *)__pyx_ptype_19dependency_injector_9providers_ThreadSafeSingleton->tp_dict, __pyx_n_s_storage_lock, __pyx_t_9) < 0) __PYX_ERR(1, 1931, __pyx_L1_error)
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   PyType_Modified(__pyx_ptype_19dependency_injector_9providers_ThreadSafeSingleton);
 
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  *     """
  * 
  *     __IS_DELEGATED__ = True             # <<<<<<<<<<<<<<
  * 
  * 
  */
-  if (PyDict_SetItem((PyObject *)__pyx_ptype_19dependency_injector_9providers_DelegatedThreadSafeSingleton->tp_dict, __pyx_n_s_IS_DELEGATED, Py_True) < 0) __PYX_ERR(1, 1977, __pyx_L1_error)
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   PyType_Modified(__pyx_ptype_19dependency_injector_9providers_DelegatedThreadSafeSingleton);
 
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  * 
  *     __IS_DELEGATED__ = True             # <<<<<<<<<<<<<<
  * 
  * 
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-  /* "dependency_injector/providers.pyx":2538
+  /* "dependency_injector/providers.pyx":2543
  *     return copy.deepcopy(instance, memo)
  * 
  * def __add_sys_streams(memo):             # <<<<<<<<<<<<<<
  *     """Add system streams to memo dictionary.
  * 
  */
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   __Pyx_DECREF(__pyx_t_9); __pyx_t_9 = 0;
 
-  /* "dependency_injector/providers.pyx":2549
+  /* "dependency_injector/providers.pyx":2554
  * 
  * 
  * def merge_dicts(dict1, dict2):             # <<<<<<<<<<<<<<
  *     """Merge dictionaries recursively.
  * 
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+  __pyx_t_9 = PyCFunction_NewEx(&__pyx_mdef_19dependency_injector_9providers_23merge_dicts, NULL, __pyx_n_s_dependency_injector_providers); if (unlikely(!__pyx_t_9)) __PYX_ERR(1, 2554, __pyx_L1_error)
   __Pyx_GOTREF(__pyx_t_9);
-  if (PyDict_SetItem(__pyx_d, __pyx_n_s_merge_dicts, __pyx_t_9) < 0) __PYX_ERR(1, 2549, __pyx_L1_error)
+  if (PyDict_SetItem(__pyx_d, __pyx_n_s_merge_dicts, __pyx_t_9) < 0) __PYX_ERR(1, 2554, __pyx_L1_error)
   __Pyx_DECREF(__pyx_t_9); __pyx_t_9 = 0;
 
   /* "(tree fragment)":1
diff --git a/src/dependency_injector/providers.pyx b/src/dependency_injector/providers.pyx
index 9310acf0..4339b872 100644
--- a/src/dependency_injector/providers.pyx
+++ b/src/dependency_injector/providers.pyx
@@ -1405,6 +1405,11 @@ cdef class Factory(Provider):
 
     @property
     def cls(self):
+        """Return provided type."""
+        return self.provides
+
+    @property
+    def provides(self):
         """Return provided type."""
         return self.__instantiator.provides
 
diff --git a/tests/unit/ext/__init__.py b/tests/unit/ext/__init__.py
new file mode 100644
index 00000000..a561a38b
--- /dev/null
+++ b/tests/unit/ext/__init__.py
@@ -0,0 +1 @@
+"""Dependency injector extension unit tests."""
diff --git a/tests/unit/ext/test_flask_py2_py3.py b/tests/unit/ext/test_flask_py2_py3.py
new file mode 100644
index 00000000..dac02e4b
--- /dev/null
+++ b/tests/unit/ext/test_flask_py2_py3.py
@@ -0,0 +1,75 @@
+"""Dependency injector Flask extension unit tests."""
+
+import unittest2 as unittest
+from flask import url_for
+from flask.views import MethodView
+
+from dependency_injector import containers, providers
+from dependency_injector.ext import flask
+
+
+def index():
+    return 'Hello World!'
+
+
+def test():
+    return 'Test!'
+
+
+class Test(MethodView):
+    def get(self):
+        return 'Test class-based!'
+
+
+class Application(containers.DeclarativeContainer):
+
+    index_view = providers.Callable(index)
+    test_view = providers.Callable(test)
+    test_class_view = providers.Factory(Test)
+
+    app = providers.Factory(
+        flask.create_app,
+        name=__name__,
+        routes=[
+            flask.Route('/', view_provider=index_view),
+            flask.Route('/test', 'test-test', test_view),
+            flask.Route('/test-class', 'test-class', test_class_view)
+        ],
+    )
+
+
+class ApplicationTests(unittest.TestCase):
+
+    def setUp(self):
+        application = Application()
+        self.app = application.app()
+        self.app.config['SERVER_NAME'] = 'test-server.com'
+        self.client = self.app.test_client()
+        self.client.__enter__()
+
+    def tearDown(self):
+        self.client.__exit__(None, None, None)
+
+    def test_index(self):
+        response = self.client.get('/')
+
+        self.assertEqual(response.status_code, 200)
+        self.assertEqual(response.data, b'Hello World!')
+
+    def test_test(self):
+        response = self.client.get('/test')
+
+        self.assertEqual(response.status_code, 200)
+        self.assertEqual(response.data, b'Test!')
+
+    def test_test_class_based(self):
+        response = self.client.get('/test-class')
+
+        self.assertEqual(response.status_code, 200)
+        self.assertEqual(response.data, b'Test class-based!')
+
+    def test_endpoints(self):
+        with self.app.app_context():
+            self.assertEqual(url_for('index'), 'http://test-server.com/')
+            self.assertEqual(url_for('test-test'), 'http://test-server.com/test')
+            self.assertEqual(url_for('test-class'), 'http://test-server.com/test-class')
diff --git a/tox.ini b/tox.ini
index 56ef18f9..61d6a098 100644
--- a/tox.ini
+++ b/tox.ini
@@ -7,6 +7,7 @@ deps=
     unittest2
 extras=
     yaml
+    flask
 commands=
     unit2 discover -s tests/unit -p test_*_py3.py
 
@@ -31,6 +32,7 @@ commands=
 
 [testenv:py34]
 extras=
+    flask
 
 [testenv:pypy]
 commands=