Class and Static Methods - 1 - Hands On

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Answer:

1. Class and Static Methods - 1

1. Define a class Circle with attribute radius.

2. Define the following:

• A class variable count which determines the number of circles created.

• A method area that calculates the area of a circle.

3. The input should be comma-separated-values, while the output should be the area for each value and the total number of circles created.

4. Check the main/tail section for output handling (read-only).

5. Use the Test against custom input box to output the result for debugging,

6. Provide float values separated by comma (refer test case samples) to display the output/error. The outputs should be split into 2 lines:

• The 1st output should return the area of the circles for which inputs were provided.

• The 2nd output should return the number of circles created for the number of inputs provided.

Solution

import os
import sys


#Add Circle class implementation below

class Circle(object):   

    no_of_circles = 0    

    def __init__(self, radius):

        self.__radius = radius

        Circle.no_of_circles += 1        

    def getCirclesCount(self):

        return Circle.no_of_circles    

    @staticmethod    

    def square(x):

        return x**2    

    def area(self):

        return 3.14*self.square(self.__radius)        

'''Check the Tail section for input/output'''

if __name__ == "__main__":
    with open(os.environ['OUTPUT_PATH'], 'w') as fout:
        res_lst = list()
        lst = list(map(lambda x: float(x.strip()), input().split(',')))
        for radius in lst:
            res_lst.append(Circle(radius).area())
        fout.write("{}\n{}".format(str(res_lst), str(Circle.no_of_circles)))

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