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12th Standard English Medium Computer Science Subject Python Classes and Objects Creative 2 Mark Questions with Solution

Published on: 22/06/2021

QB365 provides detailed and simple solution for every Creative Questions in class 12 Computer Science Subject. It will helps to get more idea about question pattern in every Creative questions with solution.

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Std: 12th Standard - Computer Science

chapter: - Creative Questions

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Questions:

Generic 2

5 x 2 = 10

Explain the working of the following program
class Sample:
num=0
def _init_(self) var):
Sample.num+= 1
self.var=var
print("The object value is = ", var)
print("The count of object created Sample.num) =",
S1=Sample(15)
S2=Sample(35)
S3=Sample(45)

Write a program in python that illustrate the use of constructor.

Name the function which acts as a constructor and destructor.

Write the syntax for the following
(i) Creating objects
(ii) Accessing class members

Write the general form of declaring class in Python.

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Answers Key:

Generic 2

5 x 2 = 10

In the program, class variable num is shared by all three objects of the class Sample. It is initialized to zero and each time an object is created, the num is incremented by 1. Since, the variable shared by all objects, change made to num by one object is reflected in other objects as well

Program to illustrate Constructor:
class Sample:
def _init_(self, num):
print("Constructor of class Sample...")
self.num=num
print("The value is :", num)
S = Sample(10)
Output:
constructor of class Sample..
The value is:10

Constructor -( - - init - - ( ))
Destructor -(- - del - - ( ))

(i) Object - name = class_name ()
(ll) Object - name = class_member

In Python, a class is defined by using the keyword class. Every class has a unique name followed by a colon (:).
Syntax:
class class_name:
statement_1
statement_2
.................
.................
statement_n