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List:       python-list
Subject:    Re: PEP 354: Enumerations in Python
From:       greg <greg () cosc ! canterbury ! ac ! nz>
Date:       2006-03-01 9:28:17
Message-ID: 46l8jaFbnfgeU4 () individual ! net
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Giovanni Bajo wrote:

> What's the repr of an enumeration value? OTOH, it should be something like
> "Weekdays.wed", so that eval(repr()) holds true. Also, it'd be very useful in
> debug dumps, tracebacks and whatnot.

That would be nice, but I don't think that's possible
with what the PEP proposes, because in

   Weekdays = enum('mon', 'tue', etc...)

there's no way for the enum object to know that it's
meant to be called 'Weekdays'.

A constructor argument could be added for this, but
then you end up having to write the name twice,
making the construct far less elegant.

Maybe *this* is a good argument for making the enum
object a class?

Or maybe it's an argument for allowing decorators
to operate on things other than functions, so you
could write something like

@enum
Weekdays = ('mon', 'tue', etc...)

--
Greg
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