Labeled enum for Python 3.4+ (tested with Python 3.6)

labeled_enum.py

from enum import Enum


class LabeledEnum(Enum):
    @staticmethod
    def __new_member__(cls, value, label):
        enum_member = object.__new__(cls)
        enum_member._value_ = value
        enum_member.label = label
        return enum_member

    @classmethod
    def get_choices(cls):
        return tuple((member.value, member.label) for member in cls)
    

Usage example:

from labeled_enum import LabeledEnum


class Example(LabeledEnum):
    """
    >>> Example(1)
    <Example.ONE: 1>
    >>> Example(1).label
    'First value'
    >>> Example.ONE.value
    1
    >>> Example.ONE.label
    'First value'
    >>> Example(2)
    <Example.TWO: 2>
    >>> Example(2).label
    'Second value'
    >>> Example.TWO.value
    2
    >>> Example.TWO.label
    'Second value'
    >>> Example.get_choices()
    ((1, 'First value'), (2, 'Second value'))
    """

    ONE = 1, 'First value'
    TWO = 2, 'Second value'