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Multilevel Inheritance Example in Python

Here, we are going to learn about the Multilevel Inheritance in Python and demonstrating the Multilevel Inheritance using a Python program.
Submitted by Shivang Yadav, on February 16, 2021

Problem Statement: We will see a program to illustrate the working of multilevel inheritance in Python.

Problem Description: The program will calculate the final salary of an employee from basic salary using multilevel inheritance.

Multilevel Inheritance in Python:

Multilevel inheritance in programming (general in object-oriented program). When a base class is derived by a derived class which is derived by another class, then it is called multilevel inheritance.

The below diagram will make things clearer,

All Class used in the program and the methods:

• Class: Employee
  • Method: getEmployee() -> gets user input from id, name and salary.
  • Method: printEmployeeDetails() -> prints employee detail
  • Method: getSalary() -> return the salary of the employee.
• Class: Perks
  • Method: calcPerks() -> calculates all perks using the salaries.
  • Method: putPerks() -> prints all perks.
  • Method: totalPerks() -> return the sum of all perks.
• Class : NetSalary:
  • Method: getTotal() -> calculates net Salary using perks and base salary.
  • Method: showTotal() -> prints total salary.

Program to illustrate multilevel inheritance in Python

class Employee:
 def getEmployee(self):
   self.__id = input("Enter Employee Id: ")
   self.__name = input("Enter Name: ")
   self.__salary = int(input("Enter Employees Basic Salary: "))
 
 def printEmployeeDetails(self):
   print(self.__id,self.__name,self.__salary)
 
 def getSalary(self):
     return(self.__salary)

class Perks(Employee):
    def calcPerks(self):
        self.getEmployee()
        sal=self.getSalary()
        self.__da=sal*35/100
        self.__hra = sal * 17 / 100
        self.__pf=sal*12/100
    def putPerks(self):
        self.printEmployeeDetails()
        print(self.__da,self.__hra,self.__pf)
    def totalPerks(self):
        t=self.__da+self.__hra-self.__pf
        return (t)
        
class NetSalary(Perks):
    def getTotal(self):
       self.calcPerks()
       self.__ns=self.getSalary()+self.totalPerks()
    def showTotal(self):
        self.putPerks()
        print("Total Salary:",self.__ns)
        
empSalary = NetSalary()
empSalary.getTotal()
empSalary.showTotal()

Output:

Enter Employee Id: 001
Enter Name: John
Enter Employees Basic Salary: 25000
001 John 25000
8750.0 4250.0 3000.0
Total Salary: 35000.0

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