python之类型错误 : object () takes no parameters之python

我是 python 的新手，正在尝试编写一个包含类和对象的程序。以下是我的代码:

class Animal: 
    __name = "" 
    __height = 0 
    __weight = 0 
    __sound = 0 
 
# define a constructor and pass arguments 
def __init__(self, name, height, weight, sound): 
    self.__name = name 
    self.__height = height 
    self.__weight = weight 
    self.__sound = sound 
 
 
# set and get functions for name 
def set_name(self, name): 
    self.__name = name 
 
def get_name(self): 
    return self.__name 
 
 
# set and get functions for height 
def set_height(self, height): 
    self.__height = height 
 
def get_height(self): 
    return str(self.__height) 
 
 
# set and get functions for weight 
def set_weight(self, weight): 
    self.__weight = weight 
 
 
def get_weight(self): 
    return str(self.__weight) 
 
 
# set and get functions for sound 
def set_sound(self, sound): 
    self.__sound = sound 
 
def get_sound(self): 
    return self.__sound 
 
 
def get_type(self): 
    print("Animal") 
 
 
def toString(self): 
    return "{} is {} cm tall and {} kg and say {}".format(self.__name, self.__height, self.__weight, self.__sound) 
 
 
# create an object call cat of type Animal 
cat = Animal('Whiskers', 33, 10, 'Meow') 
print(cat.toString()) 

当我运行该程序时，它给我一个对象不带参数的错误。但是我已经在类的构造函数中描述了参数。请帮忙。

请您参考如下方法:

确保 Animal 的所有函数都正确缩进。他们需要在 Animal 类中