A Zombie Class

class Zombie:
    def __init__(self,h,s,p):
        self.health = h
        self.size = s
        self.position = p

    def __str__(self):
        return("Zombie has health: " + str(self.health) +
                        ", size: " + str(self.size)  +
                        ", position: " + str(self.position))

    def __lshift__(self, other):
        '''returns an offspring that has health and size that averages the parents '''
        h = (self.health + other.health) / 2
        s = (self.size + other.size) /2
        p = self.position
        return Zombie(int(h),int(s),p)

    def __xor__(self, other):
        ''' returns T/F whether 2 zombies share same position '''
        return( self.position == other.position)

z1=Zombie(100,250,0)
z2=Zombie(10,200,0)
if z1^z2 :
    offspring = (z1 << z2)
    print("New Zombie: " + str(offspring))