class enemy():
	self.enemy_name = ''
	self.enemy_hp = 0
	
	def deal_damage(self, x):
		self.enemy_hp = self.enemy_hp - x
		return self.enemy_hp


rat = enemy
rat.enemy_name = 'Крыса'
rat.enemy_hp = '10'

print ('\n' + rat.enemy_hp + '\n')
rat.deal_damage(rat,2)
print ('\n' + rat.enemy_hp + '\n')