Bug report

Creating a Enum that uses automatic values and tuple assignment doesn't work!

from enum import Enum, auto
from typing import Any

class Day(Enum):
    def __new__(cls, value, abbr=None):
        obj = Enum.__new__(cls, value)
        obj.abbr = abbr
        return obj

    @staticmethod
    def _generate_next_value_(name: str, start: int, count: int, last_values: list[Any]) -> Any:
        return name

    MONDAY = auto(), "Mon"
    # etc

print(Day.MONDAY, Day.MONDAY.value, Day.MONDAY.abbr)

Run that snippet and you get

Traceback (most recent call last):
  File "mwe.py", line 5, in 
    class Day(Enum):
  File "lib/python3.9/enum.py", line 288, in __new__
    enum_member = __new__(enum_class, *args)
  File "mwe.py", line 8, in __new__
    obj = Enum.__new__(cls, value)
  File "lib/python3.9/enum.py", line 702, in __new__
    raise ve_exc
ValueError: <enum.auto object at 0x10b673fa0> is not a valid Day

Your environment

• CPython versions tested on: 3.9.2/3.9.7/3.10.2
• Operating system and architecture: Debian 11 (amd64)/macOS 11.4 (amd64)

• PR: gh-93464: [Enum] fix auto() failure during multiple assignment #99148

• PR: [3.11] gh-93464: [Enum] fix auto() failure during multiple assignment (GH-99148) #99149

• PR: gh-93464: [Enum] Add versionchanged tag #99997

• PR: [3.11] gh-93464: [Enum] Add versionchanged tag (GH-99997) #100004