Python 当我使用%时，为什么这里会出现操作数类型错误？

我正在制作一个基于文本的RPG，我已经在这上面呆了至少一个星期了 这是我创造的敌人职业，我现在的功能是攻击

class enemy:
    def __init__(self,name,level,health):
        self.name = name
        self.level = level
        self.health = health
    def attack(self):
        print "A %r appears! It wants to fight!" % (self.name)
        player.weapon = (raw_input("What do you attack with? >>").lower())
        while (player.health > 0) or (self.health > 0):
            if (player.inventory.get(player.weapon) > 0):
                player.health = player.health - ( ( randint(0,5) ) +  attack_multiplier(self.level) )
                print "%r strikes! Your health is down to %r" %(self.name, player.health)
                if (player.health > 0) and (self.health > 0):
                    if weapon_probability() == "critical hit":
                        self.health -= (((randint(0,5))) +  (attack_multiplier(weapon_levels.get(player.weapon))) * 2)
                        print_slow( "Critical Hit!")
                    elif weapon_probability() == "hit":
                        self.health -=((((randint(0,5))) +  (attack_multiplier(weapon_levels.get(player.weapon)))))
                        print_slow( "Hit!")
                    elif weapon_probability() == "miss":
                        print_slow( "Miss")
                    print_slow("Enemy health down to %r !") % self.health
                elif player.health <= 0:
                    print_slow("Your health...it's falling")
                    break
                elif self.health <= 0:
                    print_slow( "Enemy vanquished!")
                    break
            else:
                print "You don't have that!"
                player.weapon = (raw_input("What do you attack with? >>").lower())

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谢谢你的帮助，我被困在这个问题上太久了，真的很烦人。我觉得解决方案会很简单，但我不知道该怎么做

将

%self.health

放入Paranthesis中

将

%self.health

放入Paranthesis中

您需要将

%

操作符应用于字符串，而不是

print\u slow（）的返回值。该函数返回
None
，并且
None%self.health
引发错误

改变

print_slow("Enemy health down to %d !") % self.health

到

注意右括号的位置。您的代码将
%
应用于错误的对象。
您需要将
%
运算符应用于字符串，而不是
print\u slow（）
的返回值。该函数返回
None
，并且
None%self.health
引发错误

改变

print_slow("Enemy health down to %d !") % self.health

到

注意右括号的位置。您的代码将
%
应用于错误的对象

print_slow("Enemy health down to %d !" % self.health)