text: class Car:
  
  	def __init__(self,name,model,year):
  		self.n1=name
  		self.m1=model
  		self.y1=year
  		self.odometer_reading=0	#setting a default value for an attribute
  
  	def describe_car(self):
  		full_name=f"{self.n1} {self.m1} {self.y1}"
  		return full_name.title()
  
  	def rd_odometer(self):
  		print(f"This car has {self.odometer_reading} miles on it.")
  
  	def update_odometer(self,mileage):		#modifying an attribute's value through a method
  		if mileage>=self.odometer_reading:
  			self.odometer_reading=mileage
  		else:
  			print("You can't roll back an odometer!!!!!!!")
  