src/enums.py

from enum import Enum
from typing import List, Literal

class Feature(Enum):
    _name: str
    _type: Literal['category', 'number', 'date']

    CUSTOMER_JOB = ('job', 'category')
    CUSTOMER_CITY = ('city', 'category')
    CUSTOMER_STATE = ('state', 'category')
    TRANSACTION_CATEGORY = ('category', 'category')

    TRANSACTION_AMOUNT = ('amt', 'number')
    CUSTOMER_CITY_POP = ('city_pop', 'number')

    def __new__(cls, name: str, type: Literal['category', 'number']):
        obj = object.__new__(cls)
        obj._value_ = name
        obj._name = name
        obj._type = type

        return obj

    @property
    def name(self):
        return self._name

    @property
    def type(self):
        return self._type
    
    @classmethod
    def get_features_by_type(cls, type: Literal['category', 'number']) -> List['Feature']:
        return [feature for feature in cls if feature.type == type]
    
    @classmethod
    def get_all_features(cls) -> List['Feature']:
        return [feature for feature in cls]