Getters and setters methods in python

Python
1

Hi,

class PropertiesAndPrivateMembers:

def __init__(self, sqftprice, sqft, landarea, landareaprice):

    self.set_values(sqftprice, sqft, landarea, landareaprice)



def set_values(self, value, size, plotsize, plotvalue):

    if size < 0:

        raise ValueError("Size cant be less than 0")

    else:

        self.__sqft = size

    if value < 0:

        raise ValueError("Price cant be negative")

    else:

        self.__sqftprice = value

    if plotsize < 0:

        raise ValueError("plotsize cant be negative")

    else:

        self.__landarea = plotsize

    if plotvalue < 0:

        raise ValueError("plotsize cant be negative")

    else:

        self.__landareaprice = plotvalue

def calculate(self):

    total_construction_cost = ((self.__sqft *

                                self.__sqftprice) + (self.__landarea * self.__landareaprice))

    print("The total Construction Cost is:" + str(total_construction_cost))

papm = PropertiesAndPrivateMembers(2000, 1850, 1200, 4400)

papm1 = PropertiesAndPrivateMembers(2000, 1850, 1500, 4400)

papm.calculate()

papm1.calculate()

I am only setting the value here. I believe this should be sufficient for this particular program. if you are setting the instance attribute using the setter method, what is the use of the getter method?

Thankyou for your help

Thanks
Dhaya