12th Computer Science Weekly Test - 3 ( Python Classes and objects )

St. Britto Hr. Sec. School - Madurai

12th Computer Science Weekly Test - 3 ( Python Classes and objects )-Aug 2020

Time : 1.15 Hours

Part - A

Multiple Choice Question - Answer All Question

Which of the operator used to accessing members of the class?

.
;
,

In Python, the class method must name the first argument named as _______.

this
new
self
var

In Python, every class name followed by

;
: :
,

Which of the following variables can be accessed only within the class?

Protected
Public
Private
None of these

Class members are accessed through which operator?

Which of the following method is used as destructor?

__init__( )
__dest__( )
__rem__( )
__del__( )

Functions of the class are called as

Methods
Members
Variables
Loog

Which of the following is valid syntax for crating objects?

objectname = classname ()
objectname : classname ()
objectname = classname
classname = Objectname ()

Which of the following gets executed automatically when an object exit from the scope?

Destructor
Constructor
Class
Object

When class variable declared within class, methods must be prefixed by the and .

classnam,:
classname, .
:, classname
classname, objectname

Part - B

Generic 2 - Answer All Question

What is class?

Write a menu driven program to read, display, add and subtract two distances.

Write a program using class to store name and marks of students in list and print total marks.

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)

What is instantiation?

Part - C

Generic 3 - Answer All Question

Why the following program give an error while displaying the value of n2. Give Reason.

Program to illustrate about the del( ) method
class Sample:
num=0
def init(self, var):
Sample.num+=1
self.var=var
print("The object value is = ", var)
print("The value of class variable is= ", Sample.num)
def del(self):
Sample.num-=1
print("Object with value %d is exit from the scope"%self.var)
S1=Sample(15)
S2=Sample(35)
S3=Sample(45)

How do define constructor and destructor in Python?

What are class members? How do you define it?

Explain the working of the following program.
class Sample:
def _ init_(self, num):
print("Constructor of class Sample ... ")
self.num=num
print("The value is:", num)
S=Sample(10)

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12th Computer Science Weekly Test - 3 ( Python Classes and objects )

St. Britto Hr. Sec. School - Madurai

12th Computer Science Weekly Test - 3 ( Python Classes and objects )-Aug 2020

Part - A

Multiple Choice Question - Answer All Question

Which of the operator used to accessing members of the class?

In Python, the class method must name the first argument named as _______.

In Python, every class name followed by

Which of the following variables can be accessed only within the class?

Class members are accessed through which operator?

Which of the following method is used as destructor?

Functions of the class are called as

Which of the following is valid syntax for crating objects?

Which of the following gets executed automatically when an object exit from the scope?

When class variable declared within class, methods must be prefixed by the______ and ______.

Part - B

Generic 2 - Answer All Question

What is class?

Write a menu driven program to read, display, add and subtract two distances.

Write a program using class to store name and marks of students in list and print total marks.

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)

What is instantiation?

Part - C

Generic 3 - Answer All Question

Why the following program give an error while displaying the value of n2. Give Reason.

How do define constructor and destructor in Python?

What are class members? How do you define it?

Explain the working of the following program. class Sample: def _ init_(self, num): print("Constructor of class Sample ... ") self.num=num print("The value is:", num) S=Sample(10)

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When class variable declared within class, methods must be prefixed by the and .

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)

Explain the working of the following program.
class Sample:
def _ init_(self, num):
print("Constructor of class Sample ... ")
self.num=num
print("The value is:", num)
S=Sample(10)