失忆的鱼 2018-10-03 13:13 采纳率: 100%
浏览 1939
已采纳

python新手问题:这个类实例化总报错

class Turtle:
def init(self,x):
self.num = x

class Fish:
def init(self,x):
self.num = x
class Pool:
def init(self,x,y):
self.turtle = Turtle(x)
self.fish = Fish(y)
def print_num(self):
print ("本池塘共有%d只乌龟,有%d条鱼",(self.turtle.num,self.fish.num))

运行和报错:

pool=Pool(1,10)
Traceback (most recent call last):
File "", line 1, in
pool=Pool(1,10)
TypeError: Pool() takes no arguments
pool=Pool()
pool.print_num()
Traceback (most recent call last):
File "", line 1, in
pool.print_num()
File "C:\Users\Administrator\AppData\Local\Programs\Python\Python37-32\complexDemo.py", line 17, in print_num
print ("本池塘有%d只乌龟,有%d条鱼",(self.turtle.num,self.fish.num))
AttributeError: 'Pool' object has no attribute 'turtle'

ps:好烦啊,不知道什么原因,和源代码一模一样,查了很多教程都是这样没报错,为啥我的会报错,求大神指点下

  • 写回答

5条回答 默认 最新

  • Xiao_冬 2018-10-04 12:50
    关注

    根据我的判断,你应该是想实现如下功能:
    图片说明

    代码如下:

    
    class Turtle:
        def __init__(self,x):
            self.num = x
    class Fish:
        def __init__(self,x):
            self.num = x
    class Pool:
        def __init__(self,x,y):
            self.turtle = Turtle(x)
            self.fish = Fish(y)
        def print_num(self):
            print ("本池塘共有%d只乌龟,有%d条鱼"%(self.turtle.num,self.fish.num))
    
    pool = Pool(1,10)
    pool.print_num()
    
    

    也不知道是否是你想要的答案,仅供参考吧

    本回答被题主选为最佳回答 , 对您是否有帮助呢?
    评论
查看更多回答(4条)

报告相同问题?