源代码:
class Dog:
def _init_(self,name,age):
self.name = name
self.age = age
def sit(self):
print(f"{self.name} is now sitting.")
def roll_over(self):
print(f"{self.name} rolled over.")
my_dog = Dog('Willie',6)
print(f"My dog's name is {my_dog.name}.")
print(f"My dog is {my_dog.age} years old.")
输出后,提示了Trace back :TypeError: Dog() takes no arguments
希望有大神能帮忙解答一下,因为是自学没有人可以解答。