新手小白，求大神帮我看看这个调用类函数哪里出错了

溺水的老虎

class Dog():
        def _init_(self,name,age):
                self.name=name
                self.age=age
        def sit(self):
                print(self.name.title()+" is now sitting."
        def roll_over(self):
                print(self.name.title()+" rolled over!"
my_dog=Dog('willie',6)
print("My dog's name is "+ my_dog.name.title()+".'"
print("My dog  is "+str(my_dog.age)+" years old."



错误提示
Traceback (most recent call last):
  File "dog.py", line 9, in <module>
    my_dog=Dog('willie',6)
TypeError: object() takes no parameters

这是为什么啊？我明明照着书上写的······

溺水的老虎

class Dog():
        def _init_(self,name,age):
                self.name=name
                self.age=age
        def sit(self):
                print(self.name.title()+" is now sitting." )
        def roll_over(self):
                print(self.name.title()+" rolled over!" )
my_dog=Dog('willie',6)

bskay

def _init_(self,name,age):该为
def __init__(self,name,age):

溺水的老虎

回复 3# bskay

哇塞···这哪看得出来下划线的长短啊·~~~谢谢大神啊·~~~