Python collection filter

https://github.com/kudo/collection-filter

|Build Status| |Unit Test Coverage|

This library provides a DSL filter for list or dict data. It is original designed for RESTful API partial response. Tested with Python 2.6, 2.7.

Quick Start

To install, use pip:

$ pip install collection-filter

Then:

.. code:: python

$ python

>>> from collection_filter import collection_filter

# Query a dict
>>> collection_filter({'foo': 1, 'bar': 2}, 'foo')
{'foo': 1}

# Query a dict with multiple elements (seperated by comma)
>>> collection_filter({'foo': 1, 'bar': 2}, 'foo,bar')
{'foo': 1, 'bar': 2}

# Query a dict deeply
>>> collection_filter({'foo': {'bar': 2, 'orange': 'sweet'}}, 'foo.bar')
{'foo': {'bar': 2}}

# Query a list
>>> collection_filter([{'foo': 1, 'bar': 2}, {'foo': 3, 'bar': 4}], '[].foo')
[{'foo': 1}, {'foo': 3}]

# list/dict combination example
>>> collection_filter({'foo': 'bar', 'aListOfDict': [{'foo': 1, 'bar': 2}]}, 'aListOfDict[].foo')
{'aListOfDict': [{'foo': 1}]}

Syntax

Currently support operators

+----------+------------------------------------------------+ | Operator | Description | +==========+================================================+ | , | Multiple field query sperated by comma | +----------+------------------------------------------------+ | [] | To indicate the data should be handled as list | +----------+------------------------------------------------+ | . | Dot notation should follow with a symbol name | | | which to specify a field in current dict data | +----------+------------------------------------------------+