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改进这个问题

基本上，任务是创建允许游戏运行的代码。 我写的代码是：

class Character(object):
def __init__(self, name, health):
    self.name = name
    self.health = health
def take_damage(self, damage):
    self.damage = damage
    self.health = self.health - damage
    return self.health
def __str__():
    return self.name, "(health = " + self.health + ")"

class Hero(Character):
    def __init__(self, name, health):
        super().__init__(name, health)
        self.__inventory = list()
    def restore_health(self, heal):
        self.heal = heal
        self.health = self.health + heal
    def add_inventory(self, inventory):
        self.__inventory.append(inventory)
    def remove_inventory(self, inventory):
        self.__inventory.remove(inventory)
    def get_inventory(self, inventory):
        return self.__inventory

class Enemy(Character):
    def __init__(self, name, health, damage):
        super().__init__(name, health)
        self.damage = damage

def main():
    han = 'Han'
    zombie = 'Zombie'
    werewolf = 'Werewolf'
    print(Hero(han, 40))
    print(Enemy('Zombie', 20, 15))
    print(Enemy('Werewolf', 15, 10))  
    
if __name__ == '__main__':
    main()

作为参考，游戏的代码是这样的，但我知道它没有错：HW9是我上面看到的代码的标题

from HW9 import * 
import random

def check_for_health_elixir(hero):
    random_chance = random.randint(0,5)
    if random_chance == 5:
        health_amt = random.randint(2,5)
        print("You have found a health elixir.")
        print("Drinking it restores your health by " \
              + str(health_amt) + ".")
        hero.restore_health(health_amt)
        print("Your current health is " + str(hero.health) + ".\n")

def run(hero, enemy):
    damage = random.randint(0, enemy.damage//2)
    print("The " + enemy.name + " inflicted a damage of " \
          + str(damage) + " as you ran away.")
    health = hero.take_damage(damage)
    print("Your current health is " + str(health) + ".\n")

def fight(hero, enemy):
    winner = random.randint(0,1)
    if winner == 0:
        print("You have defeated the " + enemy.name + ".")
    else:
        print("You have lost the fight. The " \
              + enemy.name \
              + " has inflicted a damage of " \
              + str(enemy.damage) + ".")
        health = hero.take_damage(enemy.damage)
    print("Your current health is " + str(hero.health) + ".\n")

def main():

    hero = Hero('Elsa', 40)
    goblin = Enemy('Goblin', 10, 5)
    dragon = Enemy('Dragon', 30, 10)
    ogre = Enemy('Ogre', 20, 8)
    wizard = Enemy('Wizard', 20, 10)

    enemies = {goblin, dragon, ogre, wizard}

    print("You are the hero " + hero.name + ". Your current health is " \
          + str(hero.health) + ".\n")
    
    game_over = False
    while not game_over:

        health = check_for_health_elixir(hero)

        enemy = random.sample(enemies, 1)[0]
        print("You have encountered a " +  enemy.name + ".")
        action = input("Do you want to run or fight? ").strip()

        while action != "run" and action != "fight":
            action = input("Do you want to run or fight?").strip()

        if action == "run":
            run(hero, enemy)

        elif action == "fight":
            fight(hero, enemy)

        if hero.health <= 0:
            print("You are dead!\nGame over.")
            game_over = True   
            

if __name__ == '__main__':
    main()

我的代码应该打印出来的是：

Start:
Han (health=40)
Zombie (health=20)
Warewolf (health=15)
Battle 1:
Han (health=30)
Warewolf (health=5)
Battle 2:
Han (health=15)
Zombie (health=0)
Restore Health:
Han (health=20)
Inventory:['gold coin', ‘candle']

我遇到的问题是它说：

    print(Hero(han, 40))
TypeError: __str__() takes 0 positional arguments but 1 was given

这来自我代码末尾的 def main() ，但我不确定我做错了什么，还有更多代码要写，但我想先弄清楚我做错了什么。

Answer 1

问题是您忘记在_str_function中添加self 参数。 类中所有未标记为@staticmethod的函数都必须具有 self 参数。 因此，要更正它，您只需将其更改为：

def __str__(self):