Python Programming Quiz – 7th Week Quiz Solution 2020

 

Python Programming Quiz – 7th Week Quiz Solution 2020

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Q.1. Naming convention  of module of a python file is ?

Answer :- (a) All names should be lower case.

Reason:- Modules should have short, all-lowercase names. Underscores can be used in the module name if it improves readability. Python packages should also have short, all-lowercase names, although the use of underscores is discouraged. 

Q.2.The following code is saved in a file mod.py (using python 3.X version):

def print_hello():

print (“Hello”)

Now consider the following interaction on Python console, assuming mod.py

is in the current directory where the console is invoked:

>>> import hello

>>> print_hello()

What wiil the output of the code ?

Answer:- (b)."HELLO" WILL BE PRINTED ( WITHOUT QUOTES ).

Reason:- A module is a file containing Python definitions and statements. The file name is the module name with the suffix .py appended.

[3]  What is the output of the following python code?

class hello:

def __init__(self,a=”Visit Prutor.ai website”):

self.a=a

def display(self):

print(self.a)

obj=hello()

obj.display()

(a): The program has an error because constructor can’t have default arguments

(b): Nothing is displayed

(c): “Visit Prutor.ai website” is displayed

(d): The program has an error because display function doesn’t have parameters

Answer:- (c) “Visit Prutor.ai website” is displayed.

Reason:- Python is an object oriented programming language. Almost everything in Python is an object, with its properties and methods. A Class is like an object constructor, or a "blueprint" for creating objects.

[4] What is the output of the following python code?

class test:

def __init__(self,x" "):

self.x=x

def display(self):

print(self.x)

obj=test()

obj.display()

(a): Executes normally and doesn’t display anything

(b): Displays 0, which is the automatic default value

(c): Error as at least one argument is required while creating an object

(d): Error as display function requires additional argument.

Answer:- (c) Error as at least one argument is required while creating an object.

Reason:- The JavaScript exception "more arguments needed" occurs when ... The Object.create() method requires at least one argument and the Object.

[5] What does Instantiation mean in terms of Object Oriented Programming?

(a): Deleting an instance of class

(b): Creating an instance of class

(c): Copying an instance of class

(d): Modifying an instance of class

Answer: (b) Creating an instance of class.

Reason:-   To instantiate is to create such an instance by, for example, defining one particular variation of object within a class, giving it a name, and locating it in some physical place. 1) In object-oriented programming, some writers say that you instantiate a class to create an object, a concrete instance of the class