So I am new to learning decorators and I have gone through countless tutorials and while I understand and can mostly follow all of the examples, I think the best way to learn, would be to implement a decorator myself. So I am going to use this example below. I realize a decorator is not at all necessary to do this, but for the sake of learning, I would like to add a decorator that filters the strings like dog name and breed and turns them into lowercase. Any ideas or pointers in the right direction would be appreciated.

class Dogs:
    totalDogs = 0
    dogList=[]

    def __init__(self, breed, color, age):
        self.breed=breed
        self.color=color
        self.age=age
        Dogs.dogList.append(self.breed)
        Dogs.totalDogs += 1

    def displayDogs(self):
        print "breed: ", self.breed
        print "color: ",self.color
        print "age: ",self.age
        print "list of breeds:", Dogs.dogList
        print "total dogs: ", Dogs.totalDogs

def somedecorator(*args):
    #now what

terrier=Dogs("TeRrIer", "white", 5)
terrier.displayDogs()
retriever=Dogs("goldenRETRIEVER", "brown", 10)
retriever.displayDogs()