Filter
======

A :doc:`Callable </Callables/Callable>` for applying filters on input data.

Definition
----------

.. py:class:: controller.callable.transformer.Filter(self, input_step_name: str, conditions: list[list[FilterCondition]], output_list: list[str])

    :callable name: ``filter``
    :callable type: :doc:`Transformer </Callables/Types/Transformer>`

    :param input_step_name: The name of the step where its table is to be filtered on.
    :type input_step_name: str
    :param conditions: Conditions to apply to the table specified in ``input_step_name``.
    :type conditions: list[list[FilterCondition]]
    :param output_list: A list of columns to return.
    :type output_list: list[str]

Parameters
----------

// TODO

Output
------

A DataFrame is returned where it contains all columns specified in the ``output_list`` with the rows that match the conditions specified in ``conditions``.

Example configuration
---------------------

.. code-block:: javascript

    // TODO