Question

Using Python 3, I unpackaged the flufl.enum code into my application source tree just to try it. Sample code:

from taurine.flufl.enum import Enum

class Colors(Enum):
    red = 1
    green = 2
    blue = 3

print(Colors.red)
red = Colors.red
print("red == Colors.red "+str(red == Colors.red))
print("red == Colors.blue "+str(red == Colors.blue))
print("red is Colors.red "+str(red is Colors.red))

Everything works as expected except the print(Color.red). According to http://packages.python.org/flufl.enum/docs/using.html I’d expect it to print “Colors.red” but it’s printing 1. Anyone familiar with this package know if there’s a way to get it to print “Colors.red”? I’ve posted a question on the library’s site but thought someone here might have experience as well.

EDIT: It does work as expected if I define Colors with:

Colors = make_enum('Colors','red green blue')

But I prefer the syntax of:

class Colors(Enum):
    red = 1
    green = 2
    blue = 3

Answer 1

I realized init wasn’t even being called on EnumMetaclass. I think the following code in _enum.py is meant to make inheriting from Enum all you’d need to do, but something about it doesn’t work and it’s beyond me:

class Enum:
    __metaclass__ = EnumMetaclass

This works:

class Colors(metaclass=EnumMetaclass):
    red = 1
    green = 2
    blue = 3

I’m happy now.

EDIT: Found out why. See the first answer to the following question: Shouldn't __metaclass__ force the use of a metaclass in Python?