Decorators LESSON 5 - FUNCTIONSASSIGNMENT 1

Decorators - lesson 5

#I don't understand the need for classes or use of classes. What's __repr__? Why do we have to use the double underscore before the term both for __init__ and __repr__.

class coordinate(object):
	def __init__(self, x, y):
		self.x = x
		self.y = y
	def __repr__(self):
		return "coord: " + str(self.__dict__)
def add(a, b):
	return coordinate(a.x + b.x, a.y + b.y)
def sub(a, b):
	return coordinate(a.x - b.x, a.y + b.y)
one = coordinate(100, 200)
two = coordinate(300, 200)
print add(one, two)