python新手问题：这个类实例化总报错

Question

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

Answer 1

根据我的判断，你应该是想实现如下功能：

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