Extending Python's enums

Enumerated types or "enums" are a feature of many languages, including Python; enums provide a convenient way to collect up a bunch of related symbols that (typically) evaluate to integer values. The canonical example would seem to be for colors, at least for demonstration purposes, but there are others, especially for handling "magic" constants from source likes POSIX or the host operating system. A recent thread on the python-ideas mailing list discusses different ways to add a new feature to enums—seven years after they were added to the standard library as part of Python 3.4.

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