enum 0.3

Robust enumerated data types in Python

This package provides a class for robust enumerations in Python.

An enumeration object is created with a sequence of string arguments to the Enum() function:

>>> from enum import Enum
>>> Colours = Enum('red', 'blue', 'green')
>>> Weekdays = Enum('mon', 'tue', 'wed', 'thu', 'fri', 'sat', 'sun')

The return value is an immutable sequence object with a value for each of the string arguments. Each value is also available as an attribute named from the corresponding string argument:

>>> pizza_night = Weekdays[4]
>>> pixel_colour = Colours.blue

The values are constants that can be compared only with other values from the same enumeration, but can be coerced to simple strings matching the original arguments to Enum().

The design is based in part on Zoran Isailovski’s recipe, “First Class Enums in Python” in the ASPN Python Cookbook <URL:http://aspn.activestate.com/ASPN/Cookbook/Python/Recipe/413486>.