$ 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}]}