## Step One
INVALID = 0
class Point( object ):
    '''A point in a graph with x and y coordinates'''
    def __init__( self, uprl, xLoc, yLoc, name = ''):
        '''
        A point is identified by its x and y coordinates,
        It may also have a name, and located in a certain uprl-the quadrant.
        '''
        self.__xLoc = xLoc
        self.__yLoc = yLoc
        self.__name = name
        self.__urpl = uprl
    def getX( self ):
        '''returns the x coordinate'''
        return self.__xLoc
    def getY( self ):
        '''returns the y coordinate'''
        return self.__yLoc
    def getName( self ):
        '''returns name of point'''
        return self.__name
    def getUprl( self ):
        '''returns uprl'''
        return self.__uprl
    def __str__( self ):
        return '(%.5f, %.5f)' %( self.__xLoc, self.__yLoc )
## Step Two
    def expand( self, exRate ):
        '''expands values of both x and y'''
        if exRate < 1:
            return INVALID   #multiplying points by a negative number or 0 would make the plane smaller, not expand.
        self.__xLoc *= exRate
        self.__yLoc *= exRate

## Step Three
class Quadrant( object ):
    '''Points live in a Quadrant, each Quadrant has a name, they are I, II, III, and IV, each quadrant will have its own points'''
    def __init__( self, I = []. II = [], III = [], IV = []):
        ''''''
        self.I = QuadI
        self.II = QuadII
        self.III = QuadIII
        self.IV = QuadIV
    def createPoints( self ):
        '''An array of points are created and placed into each quadrant'''
        pList = []
        points = []
        pFile = open("points.txt", 'r')
        line = pFile.readline()
        while line != "":
            pList.append(line)
            line = pFile.readline()
        pFile.close()
        for each in pList:
            new = each.split(" ")
            point = str(Point(new[0], new[1], "", ""))
            points.append(point)
        return points