https://github.com/carlosescri/DottedDict

Python library that provides a method of accessing lists and dicts with a dotted path notation.
https://github.com/carlosescri/DottedDict

Last synced: 5 days ago
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Python library that provides a method of accessing lists and dicts with a dotted path notation.

• Host: GitHub
• URL: https://github.com/carlosescri/DottedDict
• Owner: carlosescri
• License: mit
• Created: 2014-03-07T18:29:00.000Z (over 10 years ago)
• Default Branch: master
• Last Pushed: 2023-02-27T22:31:32.000Z (over 1 year ago)
• Last Synced: 2024-09-24T09:20:04.020Z (about 2 months ago)
• Language: Python
• Homepage:
• Size: 227 KB
• Stars: 190
• Watchers: 4
• Forks: 25
• Open Issues: 12
• Metadata Files:
  • Readme: README.rst
  • Changelog: CHANGES.txt
  • License: LICENSE

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• awesome-python-resources - GitHub - 77% open · ⏱️ 30.10.2015): (内置类的增强版实现)

README

        
dotted

======

.. image:: https://pypip.in/version/dotted/badge.svg?style=flat

    :target: https://pypi.python.org/pypi/dotted/

    :alt: Latest Version

.. image:: https://travis-ci.org/carlosescri/DottedDict.svg?branch=master

    :target: https://travis-ci.org/carlosescri/DottedDict

A Python library that provides a method of accessing lists and dicts with a

dotted path notation. It is useful to access a deep path inside a complex

object composed of lists and dicts.

Quick & Dirty:

==============

.. code-block:: python

    from dotted.collection import DottedCollection, DottedDict, DottedList

    obj = DottedCollection.factory(dict_or_list)

    obj = DottedCollection.load_json(json_value)

    obj = DottedDict(a_dict)

    obj = DottedList(a_list)

    from dotted.utils import dot, dot_json

    obj = dot(dict_or_list)

    obj = dot_json(json_value)

``DottedDict`` and ``DottedList`` have the same accessors as ``dict`` and ``list``

so you can iterate them as usual. Both type of objects support access via a

dotted path key.

Examples

========

Example #1: DottedList

----------------------

.. code-block:: python

    obj = DottedList([0, 1, 2, 3, [4, 5, 6], 7, 8, [9, 10]])

All of these are true:

.. code-block:: python

    obj[0]     ==  0

    obj['1']   ==  1

    obj['4.0'] ==  4

    obj['4.2'] ==  6

    obj[5]     ==  7

    obj['7.1'] == 10

If you want to append you can do:

.. code-block:: python

    obj.append(12)

or:

.. code-block:: python

    obj[8] = 11

but the latter only works if ``index == len(obj)``. In other case you will get a

very pretty exception.

Example #2: DottedDict

----------------------

.. code-block:: python

    obj = DottedDict({'hello': {'world': {'wide': 'web'}}})

All of these are true:

.. code-block:: python

    obj['hello'] == {'world': {'wide': 'web'}}

    obj['hello.world'] == {'wide': 'web'}

    obj['hello.world.wide'] == 'web'

    obj.hello == {'world': {'wide': 'web'}}

    obj.hello.world == {'wide': 'web'}

    obj.hello.world.wide == 'web'

Example #3: Both working together

---------------------------------

.. code-block:: python

    obj = DottedCollection.factory({

        'hello': [{'world': {'wide': ['web', 'web', 'web']}}]

    })

You can access:

.. code-block:: python

    obj['hello'][0]['world']['wide'][0]

    obj.hello[0].world.wide[0]

    obj.hello[0].world['wide'][0]

    obj.hello[0].world['wide.0']

    obj.hello['0.world'].wide[0]

    ...

    obj['hello.0.world.wide.0']

Example #4: When new values are dicts or lists

----------------------------------------------

.. code-block:: python

    obj = DottedCollection.factory(some_obj)

    obj['some.path'] = {'hello': 'world'}  # will be converted to a DottedDict

    obj['another.path'] = ['hello']  # will be converted to a DottedList

Example #5: Shortcuts

---------------------

.. code-block:: python

    from dotted.utils import dot, dot_json

    obj = dot({'hello': 'world'})

    obj = dot_json('{"hello": "world"}')

Example #6: Keys with dots inside!

----------------------------------

Well, you can actually use escaped keys, but it's better to avoid them:

.. code-block:: python

    from dotted.utils import dot, dot_json

    obj = dot({"hello\.world": "Hello!"})

    obj = dot_json('{"hello\\\\.world": "Hello!"}')

    value = obj["hello\.world"]  # Hello!

That's all!

Tests

=====

Run in the terminal from the parent directory:

.. code-block:: console

    python -m dotted.test.test_collection

Special Thanks

==============

- **Marc Abramowitz** (`@msabramo`_)

- **Ryan Witt** (`@ryanwitt`_)

.. _@msabramo: https://github.com/msabramo

.. _@ryanwitt: https://github.com/ryanwitt