Allergies flag enum

allergies.py

from __future__ import annotations

from enum import CONFORM, Flag, auto

class Allergies(Flag, boundary=CONFORM):
    EGGS = auto()
    PEANUTS = auto()
    SHELLFISH = auto()
    STRAWBERRIES = auto()
    TOMATOES = auto()
    CHOCOLATE = auto()
    POLLEN = auto()
    CATS = auto()

    def allergic_to(self, item: str) -> bool:
        return type(self)[item.upper()] in self

    @property
    def lst(self) -> list[str]:
        return [allergy.name.lower() for allergy in self]

Solution for: https://exercism.org/tracks/python/exercises/allergies