python9.1.1创建Dog类

class Dog:#可以不写（）
“”“一次模拟小狗的简单尝试”“”

def __init__(self,name,age):
	"""初始化属性name和age"""
	self.a=name
	self.g=age
	
def sit(self):
	"""模拟小狗被命令时蹲下"""
	print(f"{self.a} is now sitting.")
	
def roll_over(self):
	"""模拟小狗被命令时打滚"""
	print(f"{self.a} is rolled over!")

my_dog=Dog(‘wilie’,6)
your_dog=Dog(‘Lucy’,3)

print(f"My dog’s name is {my_dog.a}.“)
print(f"My dog is {my_dog.g} years old.”)
my_dog.sit()

print(f"\nYour dog’s name is {your_dog.a}.“)
print(f"Your dog is {your_dog.g} years ild.”)
your_dog.sit()