Two fighters one winner

#Create a function that returns the name of the winner in a fight between two fighters.
#Each fighter takes turns attacking the other and whoever kills the other first is victorious. Death is defined as having health <= 0.
#Each fighter will be a Fighter object/instance. See the Fighter class below in your chosen language.
#Both health and damagePerAttack (damage_per_attack for python) will be integers larger than 0. You can mutate the Fighter objects.
#Your function also receives a third argument, a string, with the name of the fighter that attacks first.

def declare_winner(fighter1, fighter2, first_attacker):
    attacker = fighter1 if fighter1.name == first_attacker else fighter2
    defender = fighter2 if fighter1.name == first_attacker else fighter1
    while True:
        defender.health -= attacker.damage_per_attack
        if defender.health <= 0:
            return attacker.name
        attacker, defender = defender, attacker