The while loop is not breaking once my player's hitpoints <= 0?

import sys
import random
from character import Character
from monster import Dragon
from monster import Goblin
from monster import Troll


class Game:
    def setup(self):
        self.player = Character()
        self.monsters = [
        Goblin(),
        Troll(),
        Dragon()
        ]
        self.monster = random.choice(self.monsters)

    def type_of_monster(self):
        if self.monster.__class__.__name__ == "Goblin":
            self.monster_turn(1, "")
        elif self.monster.__class__.__name__ == "Troll":
            self.monster_turn(3, "s")
        elif self.monster.__class__.__name__ == "Dragon":
            self.monster_turn(5, "s")

    def get_next_monster(self):
        self.monsters.remove(self.monster)
        self.monster = random.choice(self.monsters)


    def monster_turn(self, num, string):
        if self.monster.attack(): 
            print("{} is attacking!".format(self.monster))
            want_to_dodge = input("Dodge? Y/n ").lower()
            if want_to_dodge == "y":
                self.player.dodge()
                if self.player.dodge():
                    print("You dodged the {} attack!".format(self.monster.__class__.__name__))
                else:
                    self.player.hit_points -= num
                    print("You got hit anyway! HP: {}".format(self.player.hit_points))

            else:
                print("{} hit you for {} point{}!".format(self.monster, num, string))
                self.player.hit_points -= num
        else:
            print("{} is not attacking you this turn.".format(self.monster)) 

    def player_turn(self):
        player_move = input("[A]ttack, [R]est, or [Q]uit? ").lower()

        if player_move == "a":
            print("You're attacking {}.".format(self.monster))
            self.player.attack()

            if self.player.attack():
                self.monster.dodge()
                if self.monster.dodge():
                    print("{} dodged your attack!".format(self.monster))
                else:
                    if self.player.leveled_up():
                        self.monster.hit_points -= 2
                    else:
                        self.monster.hit_points -= 1
                    print("You hit {} with your {}!".format(self.monster, self.player.weapon))
            else:
                print("You missed!")
        elif player_move == "r":
            self.player.rest()
        elif player_move == "q":
            sys.exit()
        else:
            self.player_turn()

    def cleanup(self):
        if self.monster.hit_points <= 0:
            self.player.experience += self.monster.experience
            print("You killed {}!".format(self.monster))
            self.get_next_monster()

    def __init__(self):
        self.setup()
        while self.player.hit_points >= 0 and (self.monster or self.monsters):
            print("\n" + "=" * 20)
            print(self.player)
            self.type_of_monster()
            print("-"*20)
            self.player_turn()
            self.cleanup()
            print("\n" + "="*20)

        if self.player.hit_points:
            print("You win!")
        elif self.monsters or self.monster:
            print("You lose!")
        sys.exit()

Game()