class Point:
    # A class that represents a 2D Point

    def __init__(self, x, y):
        '''
        Initalization method, called when we create
         a Point. Takes 2 arguments, x and y,
         that must be numbers (ints or floats)
        '''

        # Make 2 object attributes from the passed
        #  arguments
        self.x = x
        self.y = y

    def __str__(self):
        '''
        Returns a string representation of this point
        in the form <x, y>
        '''
        return "<"+str(self.x)+","+str(self.y)+">"

    def __add__(self, other_point):
        '''
        Enables adding points via p1 + p2
        Effectively the same as saying p1.add(p2)
        '''
        return self.add(other_point)

    def move(self, delta_x, delta_y):
        '''
        Moves this Point delta_x units in the
         x-direction and delta_y units in the
         y direction.

        delta_x and delta_y must be numbers.
        '''

        self.x += delta_x
        self.y += delta_y

    def add(self, other_point):
        ''' 
        Returns a new point that is the sum of
        this point and another point
        '''
        
        new_x = self.x + other_point.x
        new_y = self.y + other_point.y
        new_point = Point(new_x, new_y)
        return new_point

# creating new points
p1 = Point(2, 3)
p2 = Point(5, 5)

# printing these points
print "The value of p1 is: " + str(p1)
print "The value of p2 is: " + str(p2)

# using the move method
p1.move(1,1) # this is the same as saying Point.move(p1, 1, 1)
print "The new value of p1 is: " + str(p1)

# we can add points together
print "p1 + p2 = " + str(p1.add(p2)) # or p1 + p2 since we have the __add__ method