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Enum library for python.

Project description

======== richenum

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===== About

A enum library for Python.

enum A simple enum implementation that maps a "variable" to a constant. RichEnum An enum implementation that offers more functionality than a basic enum, hence the name: RichEnum. Provided functionality include specifying a canonical name and a display name. The canonical name should be used if you need to do a lookup or reference in your code. The display name should be used if you need to display text to a user. OrderedRichEnum Exactly like RichEnum but also has an index specified for each enum value. Also, iteration over an OrderedRichEnum will be sorted (ascending) by the enum value's index.


| GitHub <>_ | PyPi <>_ | Blog post about the motivation behind RichEnum <>_

============ Installation

.. code:: bash

$ pip install richenum

===== Example Usage


.. code:: python

>>> from richenum import enum
>>> MY_ENUM = enum(FOO=1, BAR=2)


.. code:: python

>>> from richenum import RichEnum, RichEnumValue
>>> class MyRichEnum(RichEnum):
...    FOO = RichEnumValue(canonical_name="foo", display_name="Foo")
...    BAR = RichEnumValue(canonical_name="bar", display_name="Bar")
>>> MyRichEnum.FOO
RichEnumValue - canonical_name: 'foo'  display_name: 'Foo'
>>> MyRichEnum.from_canonical("foo")
RichEnumValue - canonical_name: 'foo'  display_name: 'Foo'


.. code:: python

>>> from richenum import OrderedRichEnum, OrderedRichEnumValue
>>> class MyOrderedRichEnum(OrderedRichEnum):
...    FOO = OrderedRichEnumValue(index=1, canonical_name="foo", display_name="Foo")
...    BAR = OrderedRichEnumValue(index=2, canonical_name="bar", display_name="Bar")
>>> MyOrderedRichEnum.FOO
OrderedRichEnumValue - idx: 1  canonical_name: 'foo'  display_name: 'Foo'
>>> MyOrderedRichEnum.from_canonical("foo")
OrderedRichEnumValue - idx: 1  canonical_name: 'foo'  display_name: 'Foo'
>>> MyOrderedRichEnum.from_index(1)
OrderedRichEnumValue - idx: 1  canonical_name: 'foo'  display_name: 'Foo'

================ Related Packages

django-richenum Makes RichEnum and OrderedRichEnum available in as model fields and form fields in Django.

| GitHub <>_

| PyPi <>_

enum Starting with Python 3.4, there is a standard library for enumerations. This class has a similar API, but is not directly compatible with that class.

============ Contributing

#. Fork the repo from GitHub <>. #. Make your changes. #. Add unittests for your changes. #. Run pep8 <>, pyflakes <>, and pylint <> to make sure your changes follow the Python style guide and doesn't have any errors. #. Add yourself to the AUTHORS file (in alphabetical order). #. Send a pull request from your fork to the main repo.


1.2.1 (2016-09-16)

- ``EnumLookupError`` class now inherits from built-in ``LookupError``.

1.2.0 (2016-04-15)

- added simple ``LookupError`` members that are thrown when
  ``RichEnum.lookup`` is called for a nonexistent attr/val pair.
  Users can choose to catch either the specific ``LookupError`` or
  continue to catch ``EnumLookupError``.

1.1.0 (2014-04-17)

- support for Python 3 and PyPy

1.0.4 (2013-12-03)

- Better unicode handling in ``__str__``, ``__unicode__``, and
  ``__repr__`` magic methods.

1.0.3 (2013-12-03)

- Stop throwing warnings.

1.0.2 (2013-11-05)

- Suppress warnings from mismatched type comparisons when generated
  in RichEnum.lookup.

1.0.1 (2013-09-20)

- Raise warnings when comparing enum values to other types, but not
  when checking membership or comparing to None.

1.0.0 (2013-08-16)

- Initial public release.

Developed and maintained by Hearsay Social, Inc. <>_.


| Adam DePue <>_ | Akshay Shah <>_ | Dale Hui <>_ | Robert MacCloy <>_ | Sam Vilain <>_

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