Incorrect Enum items order

[norlin]

Hey,

In Python 3.4, according to docs, the order of the items should be by definition.
But here, the items are explicitly sorted and this is causing the wrong order if the values are not defined in the alphabetic order (e.g. for strings).
For int values it seems will also create issues, if someone define enum values in non ascending order, but I see no reason to do that.
For strings, it's more complicated as enum with string values can be defined in non-alphabetic order as it's not so obvious.

https://github.com/ethanfurman/enum34/blob/c3e05468727500a5e783ac41e87ab70709a5d213/enum/__init__.py#L178C22-L178C22

[ethanfurman]

That bit of code only runs for Python's less than 3.0.

Do you have an example of an incorrectly ordered enum in Pythons 3.0+?

[norlin]

No, the issue is about using this in 2.7

[ethanfurman]

2.7 doesn't preserve definition order, so EnumMeta cannot know what it is. If order is important, use _order_ to specify it:

class Color(Enum):
    _order_ = 'RED GREEN BLUE'
    RED = 9
    GREEN = 13
    BLUE = 7

[norlin]

Indeed 2.7 does not preserve the order, thus sorting keys will make it incorrent