class Dog:
def __init__(self,name,age):
"""初始化name和age"""
self.name=name
self.age=age
def sit(self):
"""模拟小狗收到命令时蹲下"""
print(f"{self.name} is now sitting.")
def roll_over(self):
"""模拟小狗收到命令时打滚"""
print(f"{self.name} rolled over!")
my_dog=Dog('while',6)
your_dog=Dog('Lucy',3)
print(f"My Dog's name is {my_dog.name}.")
print(f"My Dog is {my_dog.age} years old.")
my_dog.sit()
my_dog.roll_over()
print(f"\nMy Dog's name is {your_dog.name}.")
print(f"My Dog is {your_dog.age} years old.")
your_dog.sit()My Dog's name is while.
My Dog is 6 years old.
while is now sitting.
while rolled over!
My Dog's name is Lucy.
My Dog is 3 years old.
Lucy is now sitting.
