[Python-ideas] adopt an enum type for the standard library?
python at rcn.com
Sat Apr 12 23:23:24 CEST 2008
> I don't know how good this is, though.
It's not needed. The namedtuple() function already makes enums trivially simple for anyone who wants to go down this path:
>>> flags = namedtuple('flags', 'OK ERROR OTHER')(*range(3))
flags(OK=0, ERROR=1, OTHER=2)
I'm strongly against adding any variant of enum() to the standard library. It distracts users from existing, better approaches like
module level constants, classes, dicts, and function attributes. While enums make some sense in compiled languages, there is almost
zero need for them in Python. Module level constants are often the way to go -- they look cleaner and they save an unnecessary
level of indirection (that is cost-free in a compiled language but expensive in Python):
re.IGNORECASE is better than re.flags.IGNORECASE
decimal.Overflow is better than decimal.exceptions.Overflow
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