Question

using python 3:

Do not change the tests. Write the body of the distFromOrigin method.

class Point:

def __init__(self, initX, initY):
""" Create a new point at the given coordinates """
self.__x = initX
self.__y = initY

def getX(self):
""" Get its x coordinate """
return self.__x

def getY(self):
""" Get its y coordinate """
return self.__y

def __str__(self):
""" Return a string representation of self """
return "({}, {})".format(self.__x, self.__y)

def distFromOrigin(self):
""" Return the distance between self and (0,0) """
return 0

if __name__ == "__main__":
import test
a = Point(-4,3)
test.testEqual(a.distFromOrigin(), 5)

b = Point(1,1)
test.testEqual(b.distFromOrigin(), 2**0.5)

Answer 1

class Point:

    def __init__(self, initX, initY):
        """ Create a new point at the given coordinates """
        self.__x = initX
        self.__y = initY

    def getX(self):
        """ Get its x coordinate """
        return self.__x

    def getY(self):
        """ Get its y coordinate """
        return self.__y

    def __str__(self):
        """ Return a string representation of self """
        return "({}, {})".format(self.__x, self.__y)

    def distFromOrigin(self):
        """ Return the distance between self and (0,0) """
        return ((self.__x*self.__x)+(self.__y*self.__y))**(0.5)


if __name__ == "__main__":
    import test
    a = Point(-4,3)
    test.testEqual(a.distFromOrigin(), 5)

    b = Point(1,1)
    test.testEqual(b.distFromOrigin(), 2**0.5)