Object Oriented Programming

Homework Assignment

Problem 1

Fill in the Line class methods to accept coordinate as a pair of tuples and return the slope and distance of the line.



In [18]:

    
class Line(object):
    
    def __init__(self,coor1,coor2):
        self.coor1 = coor1
        self.coor2 = coor2
    
    def distance(self):
        return ((self.coor2[0] - self.coor1[0])**2 + \
                (self.coor2[1] - self.coor1[1])**2)**0.5
    
    def slope(self):
        return (self.coor2[1] - self.coor1[1]) / \
                (self.coor2[0] - self.coor1[0])



In [19]:

    
# EXAMPLE OUTPUT

coordinate1 = (3,2)
coordinate2 = (8,10)

li = Line(coordinate1,coordinate2)



In [20]:

    
li.distance()









    Out[20]:





9.433981132056603



In [21]:

    
li.slope()









    Out[21]:





1.6



In [20]:

    
coord1 = (3.0, 2.0)
coord2 = (8.0, 10.0)

li = Line(coord1, coord2)



In [21]:

    
li.distance()









    Out[21]:





9.433981132056603



In [22]:

    
li.slope()









    Out[22]:





1.6

Problem 2

Fill in the class



In [29]:

    
class Cylinder(object):
    pi = 3.14
    
    def __init__(self,height=1,radius=1):
        self.height = height
        self.radius = radius
        
    def volume(self):
        return Cylinder.pi * (self.radius**2) * self.height
    
    def surface_area(self):
        circles = 2 * Cylinder.pi * self.radius**2
        wall = 2 * Cylinder.pi * self.radius * self.height
        return circles + wall



In [32]:

    
# EXAMPLE OUTPUT
c = Cylinder(2,3)



In [34]:

    
c.volume()









    Out[34]:





56.52



In [35]:

    
c.surface_area()









    Out[35]:





94.2



In [30]:

    
ce = Cylinder(2, 3)



In [31]:

    
ce.volume()









    Out[31]:





56.52



In [32]:

    
ce.surface_area()









    Out[32]:





94.2



In [ ]: