class Abilities:
	class A001:	pass
	class A002:	pass

class Unit:
	statAbilities = ["A001", "A002"]

	def castAbility(self, abilityID, data):
		for ability in self.statAbilities:
			if ability == abilityID:
				targetAbility = getattr(Abilities, abilityID)
				instance = targetAbility(data)

testUnit = Unit()
testUnit.castAbility(testAbility.statAbilities[1], data)