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class Animal(): #simple class definition
colour="brown" #all instances of class will be brown
bear=Animal
bear.colour
class Animal():
colour="brown"
#the init method is called when an instance is created
def __init__(self, height):
self.height = height
elephant=Animal(300) #don't have to supply the self arg, just height
print(elephant.colour)
print(elephant.height)
#why use "self"?
#1. to initialize instances of the class with certain attributes
#not just attributes within the class as a whole
class Animal():
#take colour out of here
def __init__(self, height, colour): #add the attribute here in the init method
self.height = height
self.colour = colour
fish=Animal(10, "pink")
print(fish.colour)
print(fish.height)
#2. to refer to the instance in other methods
class Animal():
def __init__(self, height, colour): #add the attribute here in the init method
self.height = height
self.colour = colour
def growAnimal(self, amount):
self.height += amount
crow=Animal(20, "black")
print(crow.height)
crow.growAnimal(10)
print(crow.height)