Skip to main content
This is a pre-production deployment of Warehouse. Changes made here affect the production instance of PyPI (
Help us improve Python packaging - Donate today!

PlaneDict is a dict-like class which represents built-in dict class as a 'plane' structure, i.e. pairs path-value. Path is a tuple of keys, value is value which allows in built-in dict.

Project Description


PlaneDict is a dict-like class which represents built-in dict class as a ‘plane’ structure, i.e. path-value pairs. Path is a tuple of keys, value is a value which allows in built-in dict.

Supported methods:
  • native:
    • __check_path__(self, path)
  • overridden:
    • __init__(self, seq=None, _factory=dict, **kwargs)
    • __getitem__(self, path)
    • __setitem__(self, path, value)
    • __delitem__(self, path)
    • __iter__(self)
    • __len__(self)
    • __repr__(self)
    • get(self, key, default=None, stddict=False)
  • inherited:
    • clear(self)
    • pop(self, key, default=<object object>)
    • popitem(self)
    • setdefault(self, key, default=None)
    • update(*args, **kwds)
    • __contains__(self, key)
    • __eq__(self, other)
    • __ne__(self, other)
    • keys(self)
    • iterkeys(self)
    • values(self)
    • itervalues(self)
    • items(self)
    • iteritems(self)


$ pip install planedict


  1. Constructor have _factory argument, it expects dict-like class (dict by default). OrderedDict is useful to use.

  2. After removing value by path, if higher dicts will become empty, they will be removed.

  3. get method has stddict parameter. If it’s True then method will return built-in dict, it will return PlaneDict object else.

  4. If PlaneDict object was passed to update method, it’s a ‘soft’ update, i.e. the intersecting values will be overridden and the new values will be added. If standard dict passed to update method, it works as a standard update method.

  5. __check_path__ method takes a sequence of keys. For example: __check_path__((1, [2, [3]], 4, (5, 6), (i for i in [7, 8]))) returns (1, 2, 3, 4, (5, 6), 7, 8). As you can see from the example above, tuple is not unfold, because tuple can be a key of dict. So if you want to get a single-key tuple, you should do this:



    path = 'key',

See examples.


d = PlaneDict(
        'key1': {
            'key2': 'val2',
            'key3': 'val3'
        'key4': {
            'key5': {
                'key6': 'val6'

>>> len(d)

>>> d['key4', 'key5', 'key6']

>>> path = ['key1', 'key2', 'key10']
>>> d[path] = 1
>>> d[path]

>>> del d['key4', 'key5', 'key6']
>>> d
{'key1': {'key3': 'val3', 'key2': 'val2'}}

>>> list(d)
[('key1', 'key3'),
 ('key1', 'key2'),
 ('key4', 'key5', 'key6')]

>>> d.get('key1', stddict=True)
{'key3': 'val3', 'key2': 'val2'}
>>> d.get(('key1', 'key2'))

>>> d.clear()
>>> print d

>>> d.pop(['key4', 'key5', 'key6'], default=None)
>>> d.pop(['key4', 'key5', 'key6'], default=None)

>>> d.popitem()
(('key1', 'key3'), 'val3')

>>> d.setdefault(['key1', 'key2'], default=None)
>>> d.setdefault(['key1', 'key7', 'key8', 'key9'], default=None)
>>> d['key1']
{'key3': 'val3', 'key2': 'val2', 'key7': {'key8': {'key9': None}}}

>>> update = {'key1': {'key10': 'val10'}}
>>> d.update(PlaneDict(update))
>>> d
{'key1': {'key2': 'val2', 'key3': 'val3', 'key10': 'val10'}, 'key4': {'key5': {'key6': 'val6'}}}
>>> d.update(update)
>>> d
{'key1': {'key10': 'val10'}, 'key4': {'key5': {'key6': 'val6'}}}

>>> d.keys()
[('key1', 'key3'),
 ('key1', 'key2'),
 ('key4', 'key5', 'key6')]

>>> d.values()
['val3', 'val2', 'val6']

>>> d.items()
[(('key1', 'key3'), 'val3'),
 (('key1', 'key2'), 'val2'),
 (('key4', 'key5', 'key6'), 'val6')]

>>> ['key1', 'key2'] in d
>>> ['key1', 'missed_key'] in d

>>> d == PlaneDict({'key1': {'key2': 'val2', 'key3': 'val3'}, 'key4': {'key5': {'key6': 'val6'}}})

>>> d == {'key1': {'key2': 'val2', 'key3': 'val3'}, 'key4': {'key5': {'key6': 'val6'}}}


MIT licensed. See the bundled LICENSE file for more details.

Release History

Release History

This version
History Node


History Node


History Node


History Node


History Node


Download Files

Download Files

Download the file for your platform. If you're not sure which to choose, learn more about installing packages.

File Name & Checksum SHA256 Checksum Help Version File Type Upload Date
planedict-1.4.0.tar.gz (4.9 kB) Copy SHA256 Checksum SHA256 Source Sep 8, 2017

Supported By

WebFaction WebFaction Technical Writing Elastic Elastic Search Pingdom Pingdom Monitoring Dyn Dyn DNS Sentry Sentry Error Logging CloudAMQP CloudAMQP RabbitMQ Heroku Heroku PaaS Kabu Creative Kabu Creative UX & Design Fastly Fastly CDN DigiCert DigiCert EV Certificate Rackspace Rackspace Cloud Servers DreamHost DreamHost Log Hosting