INHERITANCE ppt of python.pptx & PYTHON INHERITANCE PPT

TOPIC NAME : INHERITANCE IN PYTHON
Submitted by :
Nisha kumari
MCA 2nd sem

DEFINITION OF INHERITANCE
 When we define a class that inherits all the
properties of other class called inheritance.

SYNTAX OF INHERITANCE
class class_name1:
properties
Class class_name2(class_name1):
properties
Class class_namen:
properties

EXAMPLE OF INHERITANCE
Class father: #parent class
#properties
Class son(Father): #parent class
#properties

EXAMPLE OF INHERITANCE
Class Father:
def lands(self): output
print(“having 15 ekar lands”) having 10 lakhmoney
Class son(Father): having 10 ekar lands
def money(self):
print(“having 10 lakh money”)
s = son()
s.money()
s.lands()

SOME IMPORTANT POINT
 When we create object of child class then we can access child
class and parent class properties.
 But when we create object of parent class then we can’t access
child class properties.

TYPES OF INHERITANCE
1. Single inheritance
2. Multiple inheritance
3. Multi-level inheritance
4. Hierarchical inheritance

SINGLE INHERITANCE
Single inheritance is nothing but which contains only
one parent class and child class.
Parent--class
Child --class

Example of single inheritance
Class A:
num1= int(input(“Enter 1st no:”)
num2= int(input(“Enter 2st no:”)
def Add(self):
print(“Addition:”,self.num1 + self.num2)
def Sub(self):
print(“Subtraction:”,self.num1 - self.num2)

Class B(A):
def Multi(self):
print(“Multiplication:”,self.num1* self.num2)
def Div(self):
print(“Division:”,self.num1/ self.num2)
Obj = B( )
Obj.Add( )
Obj.Sub( )
Obj.Multi( )
Obj.Div( )

MULTI - LEVEL INHERITANCE
In this inheritance we have one parent class and multiple child
class.
parent--class
Child--class
Child--class

SYNTAX OF MULTI - LEVEL INHERITANCE
Class parent:
#properties
Class child1(parent):
#properties
Class child2(child1):
#properties

Example of multi-level inheritance
Class Father:
surname = “singh”
Class Son(Father):
def show(self):
print(“Ajeet”, self.surname)
Class grandDaughter(Son):
def display(self):
print(“Priya”,self.surname)
S = Son( )
S .show( )
S1 =grandDaughter( )
S1.display( )
S1.show( )
Output
Ajeet singh
Priya singh
Ajeet singh

MULTIPLE INHERITANCE
Multiple inheritance which contains more parents class and
only one child class.
Parent--class Parent--class
Parent--class
Child--class

Example of multiple inheritance
Class A:
a=50
b=30
def sum(self):
print(“sum=“, self.a + self.b)
Class B:
def sub(self):
print(“sub=“, self.a – self.b)
Class C:
def Mul(self):
print(“mul=“,self.a * self.b)
Class D(A,B,C):
def show(self):
print(“successful”)

Example of multiple inheritance
Obj = D()
Obj.sum()
Obj.sub()
Obj.Mul()
Obj.show()
Output
Sum=80
Sub=20
Mul=1500
successful

HIERARCHICAL INHERITANCE
Hierarchical inheritance contains only one parent class and
multiple child classes but each child class can access
parent class property.
Parent--class
Child--class Child--class

Example of hierarchical inheritance
Class Father:
surname = “singh”
def show(self):
print(“my surname is”,self.surname)
Class son(Father):
def name(self):
print(“my name is Ajay kumar”, self.surname)
Class Daughter(Father):
def display(self):
print(“my name is Nisha”,self.surname)

Example of hierarchical inheritance
S = son( )
D=Daughter( )
S.name( )
D.display( )
Output
My name is Ajay kumar singh
My name is Nisha singh

INHERITANCE ppt of python.pptx & PYTHON INHERITANCE PPT

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INHERITANCE ppt of python.pptx & PYTHON INHERITANCE PPT