python-dependency-injector/docs/examples/application-single-containe...

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.. _application-single-container:
Application example (single container)
======================================
.. meta::
:keywords: Python,Dependency Injection,Inversion of Control,Container,Example,Application,
Framework,AWS,boto3,client
:description: This example shows how you can create an application using a single declarative
container. We build an example Python micro application following the dependency
injection principle. It consists from several services with a domain logic that
have dependencies on database & AWS S3.
This example shows how you can create an application using a single declarative container. Using
a single declarative container is a good choice for small or moderate size application. For
building a large application refer to :ref:`application-multiple-containers`.
We build an example micro application following the dependency injection principle. It consists
of several services with a domain logic. The services have dependencies on database & AWS S3.
.. image:: images/application.png
:width: 100%
:align: center
Start from the scratch or jump to the section:
.. contents::
:local:
:backlinks: none
You can find the source code and instructions for running on the `Github <https://github.com/ets-labs/python-dependency-injector/tree/master/examples/miniapps/application-single-container>`_.
Application structure
---------------------
Application consists of an ``example`` package, several configuration files and a
``requirements.txt`` file.
.. code-block:: bash
./
├── example/
│ ├── __init__.py
│ ├── __main__.py
│ ├── containers.py
│ └── services.py
├── config.ini
├── logging.ini
└── requirements.txt
Container
---------
Listing of the ``example/containers.py``:
.. literalinclude:: ../../examples/miniapps/application-single-container/example/containers.py
:language: python
Main module
-----------
Listing of the ``example/__main__.py``:
.. literalinclude:: ../../examples/miniapps/application-single-container/example/__main__.py
:language: python
Services
--------
Listing of the ``example/services.py``:
.. literalinclude:: ../../examples/miniapps/application-single-container/example/services.py
:language: python
Configuration
-------------
Listing of the ``config.ini``:
.. literalinclude:: ../../examples/miniapps/application-single-container/config.ini
:language: ini
Listing of the ``logging.ini``:
.. literalinclude:: ../../examples/miniapps/application-single-container/logging.ini
:language: ini
Run the application
-------------------
You can find the source code and instructions for running on the `Github <https://github.com/ets-labs/python-dependency-injector/tree/master/examples/miniapps/application-single-container>`_.
.. include:: ../sponsor.rst
.. disqus::