Python Week 4 Quiz Answers

Q1. Naming convention of a module of a python file is ?

· All names should be lower case.

· Underscore can be used.

· Should be short

· All of the above.

Ans- All of the above

Reasons: Naming convention of a module should have short, all-lowercase names. Underscores can be used in the module name if it improves readability.

Q2. The following code is saved in a file hello.py (using python 3.X version):

def print_hello():

print ("Hello")

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

is in the current directory where the console is invoked:

>>> import hello

>>> hello.print_hello()

What will be the output of the code ?

Ans- "Hello" will be printed (without quotes)

Reason: Import is used in code it is used to import hello.py program with our environment. Then hello.print_hello() execute the print_hello() function and print Hello as output so 2nd option is correct.

Q3. 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):

return 0

obj=hello()

print( obj.display() )

Ans- 0

Reason: Constructor set the value of variable as a given string then print(obj.display()) call and display method execute and return 0. So 0 will be printed as output.

Q4. 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()

Ans- Executes normally and doesn’t display anything

Reason: obj=test() will create an object and the constructor _int_ initialise x to blank string, after display method called in next line and it prints the blank string as output.

Q5. What does Instantiation mean in terms of Object Oriented Programming?

· Deleting an instance of class

· Creating an instance of class

· Copying an instance of class

· Modifying an instance of class

Ans- Creating an instance of class

Reason: instantiation means creating an instance or object oriented program. So 2nd option is correct.

Python Week 4 Quiz Answers