README.rst

processr

processr provides a way to apply processing pipelines (expressed as list/dict/tuples) to Python dicts.

Example

The following snippet will increment the value for the key the_answer and then change its key to not_the_answer.

>>> from processr.processr import process
>>> from processr.transformers import set_value
>>> input_dict = {'the_answer': 42}

>>> pipeline = [
...   ('transform_values', {'the_answer': lambda value: value + 1}),
...   ('rename_keys', {'the_answer': 'not_the_answer'})
... ]
>>> process(input_dict, pipeline)
{'not_the_answer': 43}

Stages

In processr lingo, every kind of transformation applied to the dictionary is called a stage. In the previous example, two different stages are involved: transform_values and rename_keys.

A set of stages is included with processr: rename_keys: project_dict transform_values + transform_values_strict transform_dict

WIP. If you're interested, reach me on twitter.