Write a program with following specifications:

-Program defines a class CIRCLE that stores radius of circle as instance member. It also maintain a list containing radii of all circles created so far. Class maintains the value of π.
-Class has methods for constructor, area, total circles to return no. of circle objects created.
-There should be doc string for each class.
-Output should be able to show total circles created so far as well as the details of latest circle created.
-Write a main function to implement the other methods of the class.



In [1]:

    
class CIRCLE(object):
    '''Class to implement a CIRCLE type object with the following attributes:
            -radius
        And the following methods:
            -area(): Returns area of instance
            -totalCircles(): Returns number of circles created'''
    all = []
    pi = 3.14159265358979323846264
    def __init__(self,radius):
        self.radius = radius
        CIRCLE.all.append(radius)
    def area(self):
        return CIRCLE.pi * (self.radius)**2
    def totalCircles(self):
        return len(CIRCLE.all)



In [14]:

    
def main():
    clist = [CIRCLE(5) for i in xrange(10)] #Create 10 circles with radius 5
    print clist[1].totalCircles()
    print clist[0].area()



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