Pythong text based game - Looking to close out a loop

New to Python and coding. This is my first project and I'm having trouble closing a loop once one of my classes reaches zero. Any help would be appreciated. Thank you.

# Space Warriors Game
import random
import time

class Spacecraft:
    def __init__(self, type, health):
        self.type = type
        self.health = health
        self.ship_destroyed = False

    def __repr__(self):
        return "This {type} spacecraft has {health} starting hit points ".format(type=self.type, health=self.health)

    def ship_gone(self):
        self.ship_destroyed = True
        if self.health != 0:
            self.health = 0
        print("Your spacecraft has been destroyed!")

    def ship_gone_def(self):
        self.ship_destroyed = True
        if self.health != 0:
            self.health = 0
        print("Your enemy spacecraft has been destroyed! YOU WON!!")

    def lose_health(self, amount):
        self.health -= amount
        if self.health <= 0:
            self.ship_gone()
        else:
            print("Your spacecraft now has {health} hit points remaining.".format(health=self.health))

    def lose_health_def(self, amount):
        self.health -= amount
        if self.health <= 0:
            self.health = 0
            self.ship_gone_def()
        else:
            print("The enemy spacecraft now has {health} hit points remaining.".format(health=self.health))

    def attack(self, enemy_ship):
        while True:
            damage_fighter = random.randrange(6, 14)
            damage_defender = random.randrange(4, 10)
            if self.type == "fighter":
                #time.sleep(2)
                print('Your {type} spacecraft attacked the enemy ship for {damage} damage!'.format(type=self.type, damage=damage_fighter))
                #time.sleep(2)
                enemy_ship.lose_health_def(damage_fighter)
                #time.sleep(2)
                print()
                print('The enemy {enemy_ship} spacecraft attacked your ship for {damage2} damage!'.format(enemy_ship=enemy_ship.type, damage2=damage_defender))
                #time.sleep(2)
                self.lose_health(damage_defender)
                print()

            elif self.type == "defender":
                #time.sleep(2)
                print('Your {type} spacecraft attacked the enemy ship for {damage} damage!'.format(type=self.type, damage=damage_defender))
                #time.sleep(2)
                enemy_ship.lose_health_def(damage_defender)
                #time.sleep(2)
                print()
                print('The enemy {enemy_ship} spacecraft attacked your ship for {damage2} damage!'.format(enemy_ship=enemy_ship.type, damage2=damage_fighter))
                #time.sleep(2)
                self.lose_health(damage_fighter)
                print()

class Player:
    def __init__(self, type):
        self.type = type
        self.current_type = 0

    def attack_enemy_ship(self, enemy_ship):
        my_ship = self.type[self.current_type]
        their_ship = enemy_ship.type[enemy_ship.current_type]
        my_ship.attack(their_ship)

a = Spacecraft("fighter", 40)
b = Spacecraft("defender", 50)

print()
player_name = input('''Welcome to SPACE WARRIORS! Please enter your name and hit enter. ''')
print('''
Welcome ''' + player_name + '''! Space Warriors is a game that allows you to chose one of two spacecrafts and battle it out with 
the CPU! There are two classes: Fighter Class and a Defender Class. Each class is unique in it's own way.''')
print()
player_style = input('Please type in "Fighter" or "Defender" and press enter. ''').lower()
print()
if player_style == 'fighter':
    print('You have selected the fighter class which has 40 life and does 6 - 12 damage. Goodluck!')
    time.sleep(2)
elif player_style == 'defender':
    print('You have selected the defender class which has 50 life and does 4 - 10 damage. Goodluck!')
    time.sleep(2)
else:
    print('Wrong selection. Restart the game')
    raise SystemExit

player_selected = []
computer_selected = []

player_selected.append(a)
computer_selected.append(b)

player_selected.append(b)
computer_selected.append(a)

live_player = Player(player_selected)
computer_player = Player(computer_selected)

print()
print("Let's get ready to fight! Both ships are launched!")
print()

live_player.attack_enemy_ship(computer_player)

In the attack function each player does damage back and forth until one reaches 0. At that point it prints the enemy won or the player won. However, once the hit points reach 0 it continues to print the loser is defeated and the winner's damage. Any help on closing this loop would be great! Thank you.

source https://stackoverflow.com/questions/74451704/pythong-text-based-game-looking-to-close-out-a-loop