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Example of hierarchical inheritance in Python

Here, we are going to implement a python program to demonstrate an example of hierarchical inheritance.
Submitted by Pankaj Singh, on June 25, 2019

Hierarchical inheritance

When more than one derived classes are created from a single base – it is called hierarchical inheritance.

In this program, we have a parent (base) class name Details and two child (derived) classes named Employee and Doctor.

Python code to demonstrate example of hierarchical inheritance

# Python code to demonstrate example of 
# hierarchical inheritance

class Details:
    def __init__(self):
        self.__id="<No Id>"
        self.__name="<No Name>"
        self.__gender="<No Gender>"
    def setData(self,id,name,gender):
        self.__id=id
        self.__name=name
        self.__gender=gender
    def showData(self):
        print("Id: ",self.__id)
        print("Name: ", self.__name)
        print("Gender: ", self.__gender)

class Employee(Details): #Inheritance
    def __init__(self):
        self.__company="<No Company>"
        self.__dept="<No Dept>"
    def setEmployee(self,id,name,gender,comp,dept):
        self.setData(id,name,gender)
        self.__company=comp
        self.__dept=dept
    def showEmployee(self):
        self.showData()
        print("Company: ", self.__company)
        print("Department: ", self.__dept)

class Doctor(Details): #Inheritance
    def __init__(self):
        self.__hospital="<No Hospital>"
        self.__dept="<No Dept>"
    def setEmployee(self,id,name,gender,hos,dept):
        self.setData(id,name,gender)
        self.__hospital=hos
        self.__dept=dept
    def showEmployee(self):
        self.showData()
        print("Hospital: ", self.__hospital)
        print("Department: ", self.__dept)

def main():
    print("Employee Object")
    e=Employee()
    e.setEmployee(1,"Prem Sharma","Male","gmr","excavation")
    e.showEmployee()
    print("\nDoctor Object")
    d = Doctor()
    d.setEmployee(1, "pankaj", "male", "aiims", "eyes")
    d.showEmployee()

if __name__=="__main__":
    main()

Output

Employee Object
Id:  1
Name:  Prem Sharma
Gender:  Male  
Company:  gmr  
Department:  excavation 

Doctor Object  
Id:  1
Name:  pankaj  
Gender:  male  
Hospital:  aiims  
Department:  eyes

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