callable.rst

Callable provider

.. currentmodule:: dependency_injector.providers

:py:class:`Callable` provider calls a function, a method or another callable.

.. literalinclude:: ../../examples/providers/callable.py
   :language: python
   :lines: 3-

If you would like to inject :py:class:`Callable` instance to a service using :py:class:`Provide` and the wiring mechanism, then you should use the .provider field. This way :py:class:`Callable` instance will not be called when being provided, and the service can deliver their own additional arguments.

.. literalinclude:: ../../examples/providers/callable_reusable.py
   :language: python
   :lines: 3-

Callable provider handles an injection of the dependencies the same way like a :ref:`factory-provider`.

.. disqus::