Data Abstraction in Python

Data Abstraction:

Hiding of implementation or hiding of attributes from the unauthorized behavior from the class is known as Data Abstraction.
In Python language Data Abstraction can be achieved using 'class' keyword.
as per as Python language concent hiding of variables from the the unauthorized method of class is known as Data Abstraction.The main aim advantage with this security can be provide for the data.
Note: Once encapsulation can be apply the 'Data Abstraction' automatically applied.

Key Points

What is Data Abstraction

Constructors In Python

Constructor

Constructor is a non-static method of a class.Which is used to initilize the values.
Syntax:

def __init__(self,list of parameter/no parameters):
    ....
    ....

In the above syntax init is a Constructor .
In Python language these constructers are classisfied into following types
1.Noparametarized Constructor
2.Parametarized Constructor

1.NoParametarized Constructor:

If any Constructor signature does not contain parameters is known as NoParametarized Constructor
Syntax:

def __init__(self):
    ....
    ....

2.Parametarized Constructor:

If any Constructor signature contains List of parameters is known as Parametarized Constructor
Syntax:

def __init__(self,variable1,variable2,...):
    ....
    ....

Based on the Constructors these methods are classified into following types

1.No Parametarized Constructor with No return type with no Parametarized Method
2.No Parametarized Constructor with No return type with Parametarized Method
3.No Parametarized Constructor with return type with no Parametarized Method
4.No Parametarized Constructor with return type with Parametarized Method
5.Parametarized Constructor with No return type with no Parametarized Method
6.Parametarized Constructor with No return type with Parametarized Method
7.Parametarized Constructor with return type with no Parametarized Method
8.Parametarized Constructor with return type with Parametarized Method

1. No Parametarized Constructor with No return type with no Parametarized Method

2. No Parametarized Constructor with No return type with Parametarized Method

3. No Parametarized Constructor with return type with no Parametarized Method

4. No Parametarized Constructor with return type with Parametarized Method

5. Parametarized Constructor with No return type with no Parametarized Method

6. Parametarized Constructor with No return type with Parametarized Method

7. Parametarized Constructor with return type with no Parametarized Method

8. Parametarized Constructor with return type with Parametarized Method

1. No Parametarized Constructor with No return type with no Parametarized Method

class Factorial:
    def __init__(self):
        self.n=int(input("Enter n value"))


    def fact(self):
       x=1
       f=1
       while(x<=self.n):
           f=f*x;
           x=x+1
       print(f)


if __name__=="__main__":
    ff=Factorial()
    ff.fact()

Output:

Y is Max Number

2. No Parametarized Constructor with No return type with Parametarized Method

class Factorial:
    def __init__(self):
        self.n=int(input("Enter n value"))


    def fact(self,x,f):
       
       while(x<=self.n):
           f=f*x;
           x=x+1
       print(f)


if __name__=="__main__":
    ff=Factorial()
    ff.fact(1,1)

Output:

Y is Max Number

3. No Parametarized Constructor with return type with no Parametarized Method

class Factorial:
    def __init__(self):
        self.n=int(input("Enter n value"))


    def fact(self):
       x=1
       f=1
       while(x<=self.n):
           f=f*x;
           x=x+1
       return(f)


if __name__=="__main__":
    ff=Factorial()
    s=ff.fact()
    print(s)

Output:

Y is Max Number

4. No Parametarized Constructor with return type with Parametarized Method

class Factorial:
    def __init__(self):
        self.n=int(input("Enter n value"))


    def fact(self,x,f):
      
       while(x<=self.n):
           f=f*x;
           x=x+1
       return(f)


if __name__=="__main__":
    ff=Factorial()
    s=ff.fact(1,1)
    print(s)

Output:

Y is Max Number

5. Parametarized Constructor with No return type with no Parametarized Method

class Factorial:
    def __init__(self,m):
        self.n=m


    def fact(self):
       x=1
       f=1
       while(x<=self.n):
           f=f*x;
           x=x+1
       print(f)


if __name__=="__main__":
    m=int(input("Enter m value"))
    ff=Factorial(m)
    ff.fact()

Output:

Y is Max Number

6. Parametarized Constructor with No return type with Parametarized Method


class Factorial:
    def __init__(self,m):
        self.n=m


    def fact(self,x,f):
       
       while(x<=self.n):
           f=f*x;
           x=x+1
       print(f)


if __name__=="__main__":
    m=int(input("Enter m value"))
    ff=Factorial(m)
    ff.fact(1,1)

Output:

Y is Max Number

7. Parametarized Constructor with return type with no Parametarized Method


class Factorial:
    def __init__(self,m):
        self.n=m


    def fact(self):
       x=1
       f=1
       while(x<=self.n):
           f=f*x;
           x=x+1
       return(f)


if __name__=="__main__":
    m=int(input("Enter m value"))
    ff=Factorial(m)
    s=ff.fact()
    print(s)

Output:

Y is Max Number

8. Parametarized Constructor with return type with Parametarized Method

    
    
class Factorial:
    def __init__(self,m):
        self.n=m


    def fact(self,x,f):
       
       while(x<=self.n):
           f=f*x;
           x=x+1
       return(f)


if __name__=="__main__":
    m=int(input("Enter m value"))
    ff=Factorial(m)
    s=ff.fact(1,1)
    print(s)

Output:

Y is Max Number