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https://github.com/rnag/dotwiz

A blazing fast dict subclass that supports dot access notation.
https://github.com/rnag/dotwiz

attributes dictionaries dot dot-access dotdict maps notation python python3

Last synced: 3 days ago
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A blazing fast dict subclass that supports dot access notation.

Host: GitHub
URL: https://github.com/rnag/dotwiz
Owner: rnag
License: mit
Created: 2022-06-02T00:23:57.000Z (over 2 years ago)
Default Branch: main
Last Pushed: 2025-01-01T18:10:17.000Z (13 days ago)
Last Synced: 2025-01-05T15:14:39.503Z (10 days ago)
Topics: attributes, dictionaries, dot, dot-access, dotdict, maps, notation, python, python3
Language: Python
Homepage: https://dotwiz.readthedocs.io
Size: 198 KB
Stars: 53
Watchers: 2
Forks: 5
Open Issues: 12
Metadata Files:
- Readme: README.rst
- Changelog: HISTORY.rst
- Contributing: CONTRIBUTING.rst
- License: LICENSE

Awesome Lists containing this project

awesome-blazingly-fast - dotwiz - A blazing fast dict subclass that supports dot access notation. (Python)

README

        =======

Dot Wiz

=======

.. image:: https://img.shields.io/pypi/v/dotwiz.svg

        :target: https://pypi.org/project/dotwiz

.. image:: https://img.shields.io/pypi/pyversions/dotwiz.svg

        :target: https://pypi.org/project/dotwiz

.. image:: https://codecov.io/gh/rnag/dotwiz/branch/main/graph/badge.svg?token=J3YW230U8Z

        :target: https://codecov.io/gh/rnag/dotwiz

.. image:: https://github.com/rnag/dotwiz/actions/workflows/dev.yml/badge.svg

        :target: https://github.com/rnag/dotwiz/actions/workflows/dev.yml

.. image:: https://pyup.io/repos/github/rnag/dotwiz/shield.svg

        :target: https://pyup.io/repos/github/rnag/dotwiz/

        :alt: Updates

A `blazing fast`_ ``dict`` subclass that enables *dot access* notation via Python

attribute style. Nested ``dict`` and ``list`` values are automatically

transformed as well.

* Documentation: https://dotwiz.readthedocs.io.

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

Assume you have a simple ``dict`` object, with dynamic keys::

    >>> my_dict = {'this': {'dict': {'has': [{'nested': {'data': True}}]}}}

If the goal is to access a nested value, you could do it like this::

    >>> my_dict['this']['dict']['has'][0]['nested']['data']

    True

Or, using ``DotWiz``::

    >>> from dotwiz import DotWiz

    >>> dw = DotWiz(my_dict)

    >>> dw.this.dict.has[0].nested.data

    True

**Note**: This library can also make inaccessible keys safe -- check out `an example`_ with ``DotWizPlus``.

.. _an example: https://dotwiz.readthedocs.io/en/latest/usage.html#dotwizplus

Install

-------

.. code-block:: console

    $ pip install dotwiz

Usage

-----

``DotWiz``

~~~~~~~~~~

Here is an example of how to create and use a ``DotWiz`` object:

.. code:: python3

    from dotwiz import DotWiz

    dw = DotWiz({'this': {'works': {'for': [{'nested': {'values': True}}]}}},

                the_answer_to_life=42)

    print(dw)

    # >  ✫(this=✫(works=✫(for=[✫(nested=✫(values=True))])),

    #      the_answer_to_life=42)

    assert dw.this.works['for'][0].nested.values  # True

    assert dw.the_answer_to_life == 42

    print(dw.to_dict())

    # >  {'this': {'works': {'for': [{'nested': {'values': True}}]}},

    #     'the_answer_to_life': 42}

Using ``make_dot_wiz`` allows you to pass in an iterable object when

creating a ``DotWiz`` object:

.. code:: python3

    from dotwiz import make_dot_wiz

    dw = make_dot_wiz([('hello, world!', 123), ('easy: as~ pie?', True)],

                      AnyKey='value')

    print(dw)

    #> ✫(AnyKey='value', hello, world!=123, easy: as~ pie?=True)

    assert dw['hello, world!'] == 123

    assert dw['easy: as~ pie?']

    assert dw.AnyKey == 'value'

``DotWizPlus``

~~~~~~~~~~~~~~

``DotWiz+`` enables you to turn special-cased keys, such as names with spaces,

into valid *snake_case* words in Python, as shown below. Also see the note

on `Issues with Invalid Characters`_ below.

.. code:: python3

    from dotwiz import DotWizPlus

    my_dict = {'THIS': {'1': {'is': [{'For': {'AllOf': {'My !@ Fans!': True}}}]}}}

    dw = DotWizPlus(my_dict)

    print(dw)

    #> ✪(this=✪(_1=✪(is_=[✪(for_=✪(all_of=✪(my_fans=True)))])))

    # True

    assert dw.this._1.is_[0].for_.all_of.my_fans

    # alternatively, you can access it like a dict with the original keys:

    assert dw['THIS']['1']['is'][0]['For']['AllOf']['My !@ Fans!']

    print(dw.to_dict())

    # {'THIS': {'1': {'is': [{'For': {'AllOf': {'My !@ Fans!': True}}}]}}}

    print(dw.to_attr_dict())

    # {'this': {'_1': {'is_': [{'for_': {'all_of': {'my_fans': True}}}]}}}

Issues with Invalid Characters

******************************

A key name in the scope of the ``DotWizPlus`` implementation must be:

* a valid, *lower-* and *snake-* cased `identifier`_ in python.

* not a reserved *keyword*, such as ``for`` or ``class``.

* not override ``dict`` method declarations, such as ``items``, ``get``, or ``values``.

In the case where your key name does not conform, the library will mutate

your key to a safe, snake-cased format.

Spaces and invalid characters are replaced with ``_``. In the case

of a key beginning with an *int*, a leading ``_`` is added.

In the case of a *keyword* or a ``dict`` method name, a trailing

``_`` is added. Keys that appear in different cases, such

as ``myKey`` or ``My-Key``, will all be converted to

a *snake case* variant, ``my_key`` in this example.

Finally, check out `this example`_ which brings home all

that was discussed above.

Features

--------

* TODO

Benchmarks

----------

    Check out the `Benchmarks`_ section in the docs for more info.

Using a *dot-access* approach such as ``DotWiz`` can be up

to **100x** faster than with `make_dataclass`_ from the ``dataclasses`` module.

It's also about *5x* faster to create a ``DotWiz`` from a ``dict`` object

as compared to other libraries such as ``prodict`` -- or close to **15x** faster

than creating a `Box`_ -- and up to *10x* faster in general to access keys

by *dot* notation -- or almost **30x** faster than accessing keys from a `DotMap`_.

Contributing

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

Contributions are welcome! Open a pull request to fix a bug, or `open an issue`_

to discuss a new feature or change.

Check out the `Contributing`_ section in the docs for more info.

Credits

-------

This package was created with Cookiecutter_ and the `rnag/cookiecutter-pypackage`_ project template.

.. _blazing fast: https://dotwiz.readthedocs.io/en/latest/benchmarks.html#results

.. _Read The Docs: https://dotwiz.readthedocs.io

.. _Installation: https://dotwiz.readthedocs.io/en/latest/installation.html

.. _on PyPI: https://pypi.org/project/dotwiz/

.. _Issues with Invalid Characters: https://dotwiz.readthedocs.io/en/latest/#issues-with-invalid-characters

.. _identifier: https://www.askpython.com/python/python-identifiers-rules-best-practices

.. _this example: https://dotwiz.readthedocs.io/en/latest/usage.html#complete-example

.. _make_dataclass: https://docs.python.org/3/library/dataclasses.html#dataclasses.make_dataclass

.. _Benchmarks: https://dotwiz.readthedocs.io/en/latest/benchmarks.html

.. _Box: https://github.com/cdgriffith/Box/wiki/Quick-Start

.. _DotMap: https://pypi.org/project/dotmap

.. _`Contributing`: https://dotwiz.readthedocs.io/en/latest/contributing.html

.. _`open an issue`: https://github.com/rnag/dotwiz/issues

.. _Cookiecutter: https://github.com/cookiecutter/cookiecutter

.. _`rnag/cookiecutter-pypackage`: https://github.com/rnag/cookiecutter-pypackage