Question

#Here is the code I currently have:
class Character(object):
    def __init__(self, currentHealth, maxHealth, damage, defence, agility):
        self.currentHealth = currentHealth
        self.maxHealth = maxHealth
        self.damage = damage
        self.defence = defence
        self.agility = agility

class Enemy(Character):
    def __init__(self, drop):
        Character.__init__(self, currentHealth, maxHealth, damage, defence, agility)
        self.drop = drop

    def checkHealth(self):
        print("The enemies health is: " + str(self.currentHealth))

    def inspectStats(self):
        print("The enemies health is: " + str(self.currentHealth))
        print("The enemies attack is: " + str(self.damage))
        print("The enemies defence is: " + str(self.defence))
        print("The enemies evasiveness is: " + str(self.agility))

class Player(Character):
    def __init__(self, currentHealth, maxHealth, damage, defence, agility, gold):
        self.currentHealth = currentHealth
        self.maxHealth = maxHealth
        self.damage = damage
        self.defence = defence
        self.agility = agility
        self.gold = gold

    def checkHealth(self):
        print("Your current health is: " + str(self.currentHealth))

    def inspectStats(self):
        print("Your current health is: " + str(self.currentHealth))
        print("Your max health is: " + str(self.maxHealth))
        print("Your attack is: " + str(self.damage))
        print("Your defence is: " + str(self.defence))
        print("Your agility is: " + str(self.agility))
        print("Your gold is: " + str(self.gold))

bob = Player(15, 15, 5, 6, 7, 70)
spider = Enemy(10, 10, 2, 1, 5, 'silk')
spider.inspectStats()

我无法使该代码正常工作，我已经在线搜索并在以下网站上获得了一定的成功：http://www.jesshamrick.com/2011/05/18/an-introduction-to-classes-and-inheritance-in-python/ 但是，该代码似乎仍然无法正常工作。如果有人能告诉我我应该如何继承，将不胜感激。（我知道将会有一个敌人的子类，因此如果考虑到这一点会有所帮助。）

Answer 1

好的，因此，您的子类Enemy进入了方法定义，它只接受两个参数 self 和 drop 。因此，如果要使其能够接收更多参数，则必须为其提供一些占位符。天真的方法是将所有需要的参数写到位。但是lats表示，将来您将扩展Character类正在使用的参数的数量。为了使解决方案更加明确，我们可以添加*args变量作为参数。这个可变的名称（这里的args不是强制性名称，关键是*运算符）将“捕获”您在drop参数之后提供的所有参数。星形运算符不关心您传递了多少个参数。它将尝试占用尽可能多的空间。这些存储的参数现在可以解压缩到父__init__方法，如下所示：

class Enemy(Character):
    # the *args will "catch" all the positional 
    # parameters passed to this class 
    def __init__(self, drop, *args):

        # now we are using unpacking to 
        # apply all positional params holded in args to parent init method
        Character.__init__(self, *args)
        self.drop = drop

# Now You must remeber to pass the the init the  
# child argument which is drop 
# + all the parent class positional args (currentHealth, ...)

enemy = Enemy(True,...)

Answer 2

您的敌人 init 函数没有正确数量的参数。试试这个：

class Enemy(Character):
    def __init__(self, currentHealth, maxHealth, damage, defence, agility, drop):
        super(Enemy, self).__init__(currentHealth, maxHealth, damage, defence, agility)
        self.drop = drop

有关“ super”关键字的更多详细信息，可以转到there

我正在尝试优化一些类，但是代码无法正常工作

2 个答案: