from enum import Enum

# Copied from https://docs.python.org/3/library/enum.html
class NoValue(Enum):
    def __repr__(self):
        return '<%s.%s>' % (self.__class__.__name__, self.name)

# Adapted from https://docs.python.org/3/library/enum.html
class AutoNumber(NoValue):
    def __new__(cls, *args): # Remove ", *args" to provoke error
        value = len(cls.__members__) + 1
        obj = object.__new__(cls)
        obj._value_ = value
        return obj

class Color(AutoNumber):
    def __init__(self, pantone=None):
        self.pantone = pantone or 'unknown'

class Swatch(Color):
    AUBURN = ('3497')
    SEA_GREEN = ('1246')
    BLEACHED_CORAL = () # New color, no Pantone code yet!