dhui/richenum

richenum

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.

Links

GitHub

PyPi

Blog post about the motivation behind RichEnum

Installation

$ pip install richenum

Example Usage

enum

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

RichEnum

>>> 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'

OrderedRichEnum

>>> 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

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