类

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!")

class Restaurant():
    def __init__(self, restaurant_name, cuisine_type):
        self.name = restaurant_name
        self.type = cuisine_type
    
    def describe_restaurant(self):
        print("name:"+self.name)
        print("type:"+self.type)
    
    def open_restaurant(self44):
        print("status:open")
    
rest = Restaurant("PIZZA's Pizza", "Pizza")
print("Name:"+rest.name)
print("Type:"+rest.type)

rest.describe_restaurant()
rest.open_restaurant()

rest1 = Restaurant("KFC", "fastfood")
rest2 = Restaurant("MacDonald", "fastfood")
rest3 = Restaurant("Yanbian Noodle", "noodle")

rest1.describe_restaurant()
rest2.describe_restaurant()
rest3.describe_restaurant()

class User():
    def __init__(self, first_name, last_name):
        self.firstname = first_name
        self.lastname = last_name
    
    def describe_user(self):
        print("first name:"+self.firstname)
        print("last name:"+self.lastname)
    
    def greet_user(self):
        print("hello, "+self.firstname.title()+" " + self.lastname.title())
    
user1 = User("Tom","Jerry")
user2 = User("Zhang", "Yunyi")
user1.describe_user()
user1.greet_user()
user2.describe_user()
user2.greet_user()