Class and Static Methods - 3 - Hands On

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Answer:

3. Class and Static Methods - 3

1. Define a static method getPi inside Circle which returns the value 3.14. Hint: Use staticmethod decorator.

2. Redefine the area method such that it uses the getPi static method in it.

3. Try accessing the static method by using an object and the class.

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 output should return a key-value pair of the circle number and its corresponding area.

Solution

import os

import sys


#Add circle class implementation here

class Circle(object):

    count = 0

    def __init__(self, radius):

        self.__radius = radius

        Circle.count += 1

    

    @classmethod

    def getCircleCount(self):

        return Circle.count

    

    @staticmethod

    def getPi(self):

        return 3.14

    

    @staticmethod

    def square(x):

        return x**2

    

    def area(self):

        return self.getPi(self.__radius)*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()
        circcount = list()
        lst = list(map(lambda x: float(x.strip()), input().split(',')))
        for radi in lst:
            c=Circle(radi)
            res_lst.append(str(c.getCircleCount())+" : "+str(c.area()))
        fout.write("{}".format(str(res_lst)))

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