from enum import Enum


class UnitMass(str, Enum):
	""" The valid types of mass units. """ # noqa: E501
	"""# Grams <https://en.wikipedia.org/wiki/Gram> """ # noqa: E501
	G = 'g'
	"""# Kilograms <https://en.wikipedia.org/wiki/Kilogram> """ # noqa: E501
	KG = 'kg'
	"""# Pounds <https://en.wikipedia.org/wiki/Pound_(mass)> """ # noqa: E501
	LB = 'lb'

	def __str__(self) -> str:
		return str(self.value)