fastenum

Patch for builtin enum module to achieve best performance

TL;DR

• up to 6x faster members access
• up to 10x faster members name/value access
• up to 2x faster values positive check
• up to 3x faster values negative check
• up to 3x faster iteration

To enable patch, just import fastenum once:

Make sure you import it before importing anything else, otherwise things could (will) break

import fastenum
assert fastenum.enabled

from enum import Enum
assert Enum.__is_fast__()

What's changed?

• EnumMeta.__getattr__ is removed
• DynamicClassAttribute is removed in favor of instance attributes
• name/value are ordinal attributes and put in __slots__ when possible
• _missing_ type check is removed, as it was re-e-e-ally slowing things down (kinda breaking change, but who cares?)
• _order_ was removed as since python 3.6 dicts preserve order
• some other minor improvements

I feel that this actually needs to be in stdlib, but patching all this stuff was actually easier for me that opening issue in python bug tracker