[Python-Dev] enum discussion: can someone please summarize open issues? (original) (raw)

Eli Bendersky eliben at gmail.com
Mon Apr 29 14:24:59 CEST 2013

On Sun, Apr 28, 2013 at 12:32 PM, Ethan Furman <ethan at stoneleaf.us> wrote:

Example enumeration:

class Seasons(Enum): SPRING = 1 SUMMER = 2 AUTUMN = 3 WINTER = 4 daysinyear = 365 @property def avgtemp(self): return (75, 92, 66, 33)[int(self)+1] # enums are 1-based

Definite Issues: - should enum items be of the type of the Enum class? (i.e. type(SPRING) is Seasons) - should an enum item be selectable via call instead of getitem (i.e. Seasons(3) is AUTUMN) - should daysinyear be enumerated? - should avgtemp be enumerated? - for the above two, how should they be included/excluded?

Thanks for the summary. One issue I don't see addressed here is int-compatibility. Am I correct to assume that nothing changes w.r.t. that, and that an IntEnum subclass of Enum will be provided which is isinstance(integer)? Does that become straightforward by nature of enum values being the type of their enumerations?

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