Question

我是这个网站的新手，如果我做的荒唐或违反规定，但我有疑问，请对不起。

我是Python和编程新手。我正在学习Python，而我在运动时遇到了Error。我在这里搜索解决方案，但是大多数解决方案超出了我无法理解的水平。

请尝试以一种初学者可以理解的方式回答，谢谢。

这里是代码，我得到的错误是； 'AttributeError：'tuple'对象没有属性'print'

感谢您的帮助。

import random


class Enemy:
    name = "Enemy"
    health = 100
    damage = 5
    ammo = 20

    def __init__(self,name,health,damage,ammo):
        self.name = name
        self.health = health
        self.damage = damage
        self.ammo = ammo

    def properties(self):
        print("Properties: ")
        print("Name: ",self.name)
        print("Health: ",self.health)
        print("Damage: ",self.damage)
        print("Ammo: ",self.ammo)

    def attack(self):
        print(self.name + " is attacking!")
        ammo_spent = random.randrange(1,10)
        print(str(ammo_spent) + " ammo spent.")
        self.ammo -= ammo_spent
        return (ammo_spent,self.damage)

    def getattacked(self,ammo_spent,damage):
        print ("I've been shot!")
        self.health -= (ammo_spent * damage)

    def is_ammo_depleted(self):
        if (self.ammo <= 0):
            print (self.name + "'s ammo depleted.")
            return True
        return False
    def check(self):
        if (self.health <= 0):
            print("YOU DIED.")




Enemies = []

i = 0
while (i < 9):
    randomhealth = random.randrange(125,300,25)
    randomdamage = random.randrange(25,100,25)
    randomammo = random.randrange(20,200,20)
    new_enemy = ("Enemy" + str(i+1),randomhealth,randomdamage,randomammo)
    Enemies.append(new_enemy)

    i += 1

for Enemy in Enemies:
    Enemy.properties()

Answer 1

您需要创建您的类的实例：

Enemies = []

i = 0
while (i < 9):
    randomhealth = random.randrange(125,300,25)
    randomdamage = random.randrange(25,100,25)
    randomammo = random.randrange(20,200,20)

    # create an Enemy - not a tuple of values
    new_enemy = Enemy( "Enemy {}".format(i), randomhealth, randomdamage, randomammo)
    Enemies.append(new_enemy)

    i += 1

for Enemy in Enemies:
    Enemy.properties()

如果您在类中创建__str__(self)方法，则可以“告诉” python如何打印类的实例：

class Enemy:
    # snipped what you already had

    # is used if you print(instance)
    def __str__(self):
        return  """Properties:
Name: {}
Health: {}
Damage: {}
Ammo:   {}""".format(self.name, self.health, self.damage, self.ammo)

    # is used by lists if you print a whole list
    def __repr__(self):
        return str(self)

在此处了解有关__str__的信息：python __str__ for an object

Answer 2

好的，首先，别像

i = 0
while (i < 9):
    i++
    // bad

使用

for i in range(9):
   // good

相反。

第二次，

new_enemy = ("Enemy" + str(i+1),randomhealth,randomdamage,randomammo)
Enemies.append(new_enemy)

您要将元组附加到“实体”列表。您怎么可能期望Tuple具有Entity类的属性？

所以您要使用的是

Enemies = []

for i in range(9):
    randomhealth = random.randrange(125,300,25)
    randomdamage = random.randrange(25,100,25)
    randomammo = random.randrange(20,200,20)
    new_enemy = Enemy("Enemy" + str(i+1), randomhealth, randomdamage, randomammo)
    Enemies.append(new_enemy)

for Enemy in Enemies:
    Enemy.print()

接下来，在最后一个for循环中，您将类名Enemy用作循环中的变量。糟糕的主意，但幸运的是，您只能将其转换为小写。那么，为什么仍然说您的敌人班级没有印刷会员呢？因为尚未定义，所以您将方法称为“属性”。

for enemy in Enemies:
    enemy.properties()

它有效。但是，由于我们使用的是python，因此可以大大简化此代码。

最终结果：

import random


class Enemy:

    def __init__(self,name,health,damage,ammo):
        self.name = name
        self.health = health
        self.damage = damage
        self.ammo = ammo

    def __str__(self):
        return "Properties:\nName: {}\nHealth: {}\nDamage: {}\nAmmo: {}".format(
            self.name, self.health, self.damage, self.ammo)

    #your other methods

Enemies = [Enemy(name="Enemy" + str(i),
                 health=random.randrange(125, 300, 25),
                 damage=random.randrange(25, 100, 25),
                 ammo=random.randrange(20, 200, 20))
           for i in range(1, 10)]

for enemy in Enemies:
    print(enemy)

Python AttributeError：“ tuple”对象没有属性“ print”

2 个答案: