Making a Point Class in Python

Question

I am trying to create a class in python titled "Point." I am trying to create a point on a coordinate plane x and y and track them. As well as find the distance between the points. I have to use functions and methods. I have started and here is my code. I am just not sure how to use it when I go to execute the program. Any help will be appreciated.

EDIT: Updated Code

import math


class Point(object):
    '''Creates a point on a coordinate plane with values x and y.'''

    COUNT = 0

    def __init__(self, x, y):
        '''Defines x and y variables'''
        self.X = x
        self.Y = y

    def move(self, dx, dy):
        '''Determines where x and y move'''
        self.X = self.X + dx
        self.Y = self.Y + dy

    def __str__(self):
        return "Point(%s,%s)"%(self.X, self.Y) 


    def getX(self):
        return self.X

    def getY(self):
        return self.Y

    def distance(self, other):
        dx = self.X - other.X
        dy = self.Y - other.Y
        return math.sqrt(dx**2 + dy**2)

    def testPoint(x=0,y=0):
        '''Returns a point and distance'''
        p1 = Point(3, 4)
        print p1
        p2 = Point(3,0)
        print p2
        return math.hypot(dx, dy)

    print "distance = %s"%(testPoint()) 

I still need help understanding how to actually use the code. That's why I created the testPoint function. When I actually go to execute the code in IDLE, how do I prove that everything works? Thanks a bunch guys!!

I also need to add code to the constructor to increment COUNT by 1 every time a Point object is created. I also need to add appropriate code so that points can be compared using the comparison operators while 'points' are compared based on their distance from the origin.

Answer 1

Don't forget math.hypot

def distance(self, p):
    dx = self.X - p.X
    dy = self.Y - p.Y
    return hypot(dx, dy)