Inheritance is one of the OOP(Object Oriented Programming) Concept. It involves a parent and child class.
A class is created and its member functions are defined. This
class is called base class or parent class. When you want a copy of base
class, you can inherit it and create a
child class.
A child class is simply a replica of base class.
1)Here, a base class is created with name " customer"
class customer:
def __init__(cust,
fname, lname):
cust.firstname =
fname
cust.lastname =
lname
def printfullname(cust):
print(cust.firstname, cust.lastname)
#Use the customer class to create an object, and then
execute the printfullname method:
x = customer("jeev", "anand")
x.printfullname()
2) A child class “Regularcustomer” is created.
#Creating a child class Regularcustomer
class Regularcustomer(customer):
pass
# pass denotes this class doesnot have any definition.
3)The variables and member functions are included in child
class “Regularcustomer”
#The child class access the base class function
printfullname()
y = Regularcustomer(“Jey” ,”anth”)
y.printfullname()
How to override the child class function:
If you want to override the child class function,add the following code.
class Regularcustomer(customer):
def __init__(cust,
fname,lname):
customer.
__int__(cust,fname,lname)
If you want to add new member functions, use super() method.
class Regularcustomer(customer):
def __init__(cust,
fname,lname):
super().
__init__(fname,lname)
#Add a new property
age
cust.age=25
z= regularcustomer(" raje " , " eswari " , 25)
when you a new member function, the code will be
class Regularcustomer(customer):
def __init__(cust,
fname,lname,age):
super().
__init__(fname,lname)
cust.currentage=age
def message(cust):
print(“Happy
birthday”,cust.fitstname,cust.lastname,” for the year of”,cust.currentage)
when you execute this,you get the following output.
