Programming in Python Coursera Quiz Answers

Get All Weeks Programming in Python Coursera Quiz Answers

Week 1: Programming in Python Coursera Quiz Answers

Quiz 1: Knowledge check – Welcome to Python Programming

Question 1: Is a string in Python a sequence?

• Yes
• No

Question 2: In Python, what symbol is used for comments in code?

• //
• —
• #

Question 3: What type will be assigned to the following variable: x = 4?

• str – String
• int – Integer
• float – Float
• list – List

Question 4: Python allows for both implicit and explicit data type conversions?

• True
• False

Question 5: A variable called name is assigned the value of “Testing”. What will the output of the following equal – print(len(name));

• Testing
• Error
• str
• 7

Quiz 2: Self-review: Use control flow and loops to solve a problem

Question 1: Python for loops works on any type of sequence data type including strings.

• True
• False

Question 2: The enumerate function is used to provide the index of the current iteration of a for a loop.

• True
• False

Question 3: A break statement can be used to exit out of a for loop based on a certain condition being satisfied.

• True
• False

Quiz 3: Module quiz: Getting Started with Python

Question 1: Python is a dynamically typed language. What does this mean?

• Python supports both functional and object-oriented programming.
• Python requires you to explicitly set the correct data type and value before assigning a variable.
• Python does not require a type for a variable declaration. It automatically assigns the data type at run time.
• Python requires that you specify the type of variable before it is assigned.

Question 2: How do you create a block in Python?

• A block is created using a colon followed by a new line and indentation
• A block is created by a new line
• A block is created using a semi-colon and a new line
• A block is created using a semi-colon and indentation

Question 3: When declaring a variable in Python, can a variable name contain white space?

• Yes
• No

Question 4: How can a variable be deleted in python?

• The del keyword
• The remove keyword
• The def keyword
• A variable cannot be deleted

Question 5: In Python, how can you convert a number to a string?

• str()
• enumerate()
• int()
• float()

Question 6: An Integer – int in Python can be converted to type Float by using the float function?

• True
• False

Question 7: What is the purpose of a break in a for loop in Python?

• The break statement will suspend the code until continue is run.
• To terminate the code
• It controls the flow of the loop and stops the current loop from executing any further.
• The break keywork is used to debug a for loop.

Question 8: An enumerate function is used to provide the index of the current iteration of a for loop.

• True
• False

Question 9: What will be the output of the code below:

a = isinstance(str, “aa”)

print(a)

• It will throw an error. 
•  “aa”
• False
• True

Question 10: Select all the valid input() formats among the following.

Select all that apply

•  input()
•  input(“”)
• name = input(“What is your name? “)
•  “” = input(“My name is: ” + name)

Week 2: Programming in Python Coursera Quiz Answers

Quiz 1: Functions, loops and data structures

Question 1: What keyword is used to create a function in Python?

• var
• func
• def
• for

Question 2: What function in Python allows you to output data onto the screen?

• input()
• print()
• output()
• while

Question 3: A variable that is declared inside a function cannot be accessed from outside the function?

• True
• False

Question 4: Which of the declarations is correct when creating a for loop?

• for while in:
• for x in items:
• for in items:
• for if in items:

Question 5: What error will be thrown from the below code snippet?

nums = 34
for i in nums:
    print(i)

• Exception
• MemoryError
• TypeError: ‘int’ object is not iterable
• FloatingPointError

Quiz 2: Knowledge check: Functions and Data structures

Question 1: The scope inside a function is referred to as?

• Global Scope
• Local Scope
• Outer Scope
• Built-in Scope

Question 2: Given the below list, what will be the output of the print statement be?

list_items = [10, 22, 45, 67, 90]
print(list_items[2])

• 22
• 10
• 45
• 67

Question 3: Which data structure type would be most suited for storing information that should not change?

• Dictionary
• List
• Tuple

Question 4: Which of the options below is not considered a built-in Python data structure?

• Set
• Tuple
• Tree
• Dictionary

Question 5: A Set in Python does not allow duplicate values?

• True
• False

Quiz 3: Exceptions in Python

Question 1: : What type of specific error will be raised when a file is not found?

• Exception
• FileNotFoundError
• BufferError
• ImportError

Question 2: Which of the following keywords are used to handle an exception?

• try again
• try except
• try def
• try catch

Question 3: Which of the following is the base class for all user-defined exceptions in Python?

• BaseException
• EOFError
• AssertionError
• Exception

Quiz 4: Read in data, store, manipulate and output new data to a file

Question 1: What function allows reading and writing files in Python?

• input()
• read_write()
• open()
• output()

Question 2: Which method allows reading of only a single line of a file containing multiple lines?

• readline()
• read()
• readlines()
• readall()

Question 3: What is the default mode for opening a file in python?

• read mode
• copy mode
• write mode
• read and write

Question 4: What is the difference between write and append mode?

• Nothing, they are both the same.
• Write mode overwrites the existing data. Append mode adds new data to the existing file.
• Write mode will append data to the existing file. Append will overwrite the data.
• Write mode will not allow edits if content already exists. Append mode will add new data to the file.

Question 5: What error is returned if a file does not exist?

• FileNotFoundError
• LookupError
• Exception
• AssertionError

Quiz 5: Module quiz: Basic Programming with Python

Question 1: Which of the following is not a sequence data-type in Python?

• Dictionary
• String
• List
• Tuples

Question 2: For a given list called new_list, which of the following options will work:

new_list = [1,2,3,4]

Select all that apply.

• new_list[4] = 10
• new_list.extend(new_list)
• new_list.insert(0, 0)
• new_list.append(5)

Question 3: Which of the following is not a type of variable scope in Python?

• Local
• Global
• Enclosing
• Package

Question 4: Which of the following is a built-in data structure in Python?

• Tree
• LinkedList
• Set
• Queue

Question 5: For a given file called ‘names.txt’, which of the following is NOT a valid syntax for opening a file:

• with open(‘names.txt’, ‘r’) as file: print(type(file))
• with open(‘names.txt’, ‘w’) as file: print(type(file))
• with open(‘names.txt’, ‘rb’) as file: print(type(file))
• with open(‘names.txt’, ‘rw’) as file: print(type(file))

Question 6: Which among the following is not a valid Exception in Python?

• ZeroDivisionException
• FileNotFoundError
• IndexError
• LoopError

Question 7: For a file called name.txt containing the lines below:

First line
Second line
And another !

with open('names.txt', 'r') as file:
 lines = file.readlines()
print(lines)

• ‘First line’
• [‘First line\n’,

‘Second line\n’,

‘And another !’]

• [‘First line’]
• ‘First line’

‘Second line’

‘And another !’

Question 8: State TRUE or FALSE:

*args passed to the functions can accept the key-value pair.

• True
• False

Week 3: Programming in Python Coursera Quiz Answers

Quiz 1: Self-review: Make a cup of coffee

Question 1: True or False: While writing pseudocodes, we ideally put instructions for commands on the same line.

• True
• False

Question 2: What variable type would be best suited for determining if the kettle was boiling?

• float
• string
• boolean
• list

Question 3: Assuming milk and sugar are booleans and both are True. What conditional statement is correct for a user who wants both milk and sugar in their coffee?

• if milk or sugar:
• if milk and sugar:
• while milk and sugar:
• for milk and sugar:

Quiz 2: Knowledge check: Procedural Programming

Question 1: Which of the algorithm types below finds the best solution in each and every step instead of being overall optimal?

• Dynamic Programming
• Divide and conquer
• Greedy
• Recursive

Question 2: Which of the following Big O notations for function types has the slowest time complexity?

• O(log(n))
• O(c)
• O(n!)
• O(n^3)

Question 3: True or False: Linear time algorithms will always run under the same time and space regardless of the size of input.

• True
• False

Question 4: For determining efficiency, which of the following factors must be considered important?

• Time complexity
• Space complexity
• Neither of the two options above
• Both A and B

Quiz 3: Mapping key values to dictionary data structures

Question 1: What will be the output of the following code:

a = [[96], [69]]

print(”.join(list(map(str, a))))

• “[96][69]”
• “[96],[69]”
• [96][69]
• “9669”

Question 2: Which of the following is TRUE about the map() and filter() functions?

• Both the map() and filter() functions need to be defined before we use them.
• The map() function is built-in, but the filter() function needs to be defined first.
• Both the map() and filter() functions are built-in.
• The map() function needs to be defined first, but the filter() function is built-in.

Question 3: What will be the output of the following code:

z = ["alpha","bravo","charlie"]
new_z = [i[0]*2for i in z]
print(new_z)

• [‘aa’], [‘bb’], [‘cc’]
• [‘aa’, ‘bb’, ‘cc’]
• [‘a’, ‘b’, ‘c’]
• [‘alphaalpha’, ‘bravobravo’, ‘charliecharlie’]

Quiz 4: Knowledge check: Functional Programming

Question 1:

def sum(n):
   if n == 1:
       return 0
   return n + sum(n-1)

a = sum(5)
print(a)

What will be the output of the recursive code above?

RecursionError: maximum recursion depth exceeded

• 0
• 15
• 14

Question 2: Statement A: A function in Python only executes when called.

Statement B: Functions in Python always returns a value.

• Both A and B are True
• B is True but A is False
• A is True but B is False
• Both A and B are False

Question 3:

some = ["aaa", "bbb"]

#1
def aa(some):
   return

#2
def aa(some, 5):
   return

#3
def aa():
   return

#4
def aa():
   return "aaa"

Which of the above are valid functions in Python? (Select all that apply)

• 2
• 4
• 1
• 3

Question 4: For the following code:

numbers = [15, 30, 47, 82, 95]
def lesser(numbers):
   return numbers < 50

small = list(filter(lesser, numbers))
print(small)

If you modify the code above and change filter() function to map() function, what will be the list elements in the output that were not there earlier?

• 82, 95
• 15, 30, 47
• 15, 30, 47, 82, 95
• None of the other options

Quiz 5: Self-review: Define a Class

Question 1: Which of the following can be used for commenting a piece of code in Python?

Select all the correct answers.

• ( # ) – Hashtag
• ({ } ) – Curly braces
• ( @ ) – at sign
• (‘’’ ‘’’) – Triple quotations

Question 2: What will be the output of running the following code:

value = 7
class A:
    value = 5
a = A()
a.value = 3
print(value)

• 3
• None
• 7
• 5

Question 3: What will be the output of the following code:

bravo = 3
b = B()
class B:
    bravo = 5
    print("Inside class B")
c = B()
print(b.bravo)

• No output
• 5
• 3
• Error

Question 4: Which of the following keywords allows the program to continue execution without impacting any functionality or flow?

• break
• skip
• pass

Quiz 6: Self-review: Instantiate a custom Object

Question 1: Were you able to complete the code and get the expected final output mentioned?

• ​Yes
• ​No

Question 2: What was the part that you were not able to complete? Specify the line numbers in the 8 lines of code.

The expected code for the program is as follows:

class MyFirstClass():
    print("Who wrote this?")
    index = "Author-Book"
    def hand_list(self, philosopher, book):
        print(MyFirstClass.index)
        print(philosopher + " wrote the book: " + book)
whodunnit = MyFirstClass()
whodunnit.hand_list("Sun Tzu", "The Art of War")

• ​5
• ​6
• ​8
• ​3
• None
• ​7
• ​1
• ​2
• ​4

Question 3: Which of the following is the class variable in the code above?

• MyFirstClass
• index
• philosopher
• whodunnit

Question 4: How will you modify the code below if you want to include a “year” of publication in the output?

class MyFirstClass():
    print("Who wrote this?")
    index = "Author-Book"
    def hand_list(self, philosopher, book):
        print(MyFirstClass.index)
        print(philosopher + " wrote the book: " + book)
whodunnit = MyFirstClass()
whodunnit.hand_list("Sun Tzu", "The Art of War")

Answer:

Modify line numbers 4, 6 and 8 such as:

def hand_list(self, philosopher, book, year):

print(philosopher + ” wrote the book: ” + book + “in the year ” + year)

whodunnit.hand_list(“Sun Tzu”, “The Art of War”, “5th century BC”)

Quiz 7: Abstract classes and methods

Question 1: Which of the following is not a requirement to create an abstract method in Python?

• Use of a decorator called abstractmethod
• A function called ABC
• Function called abstract
• A module called abc

Question 2: There is a direct implementation of Abstraction in Python.

• True
• False

Question 3: Which OOP principle is majorly used by Python to perform Abstraction?

• Polymorphism
• Inheritance
• Encapsulation
• Method Overloading

Question 4: Which of the following statements about abstract classes is true?

• Abstract classes inherit from other base classes.
• Abstract classes act only as a base class for other classes to derive from.
• Abstract classes help redefine the objects derived from them in a derived class.
• Abstract classes are used to instantiate abstract objects.

Question 5: True or False: Abstract classes cannot exist without Abstract methods present inside them.

• True
• False

Quiz 8: Self-review: Working with Methods

Question 1: True or False: A class can serve as a base class for many derived classes.

• True
• False

Question 2: In case of multiple inheritance where C is a derived class inheriting from both class A and B, and where a and b are the respective objects for these classes, which of the following code will inherit the classes A and B correctly? (Select all that apply)

• class(a, B)
• class C(B, A)
• class C(A, B)
• class (a, b)

Question 3: In Example 3 of the previous exercise, if we had modified the code to include a global variable ‘a = 5’ as follows:

a = 5
class A:
      a = 7
      pass

class B(A):
      pass

class C(B):
      pass

c = C()
print(c.a())

Will the code work and what will be the output if it does?

• Yes and it will print the value 5
• No
• Yes and it will print the value 7

Question 4: What function can be used other than mro() to see the way classes are inherited in a given piece of code?

• dir()
• class()
• info()
• help()

Question 5: The super() function is used to? (Select all that apply)

• call child class __init__()
• call different parent class method
• called over the __init__() method of the class it is called from

Question 6: What is the type of inheritance in the code below:

class A():
    pass
class B(A):
    pass
class C(B):
    pass

• Multi-level
• Hierarchical
• Single
• Multiple

Quiz 9: Module quiz: Programming Paradigms

Question 1: Which of the following can be used for commenting a piece of code in Python?

• (‘’’ ‘’’) – Triple quotation marks
• ( @ ) – At the rate sign
• · ( # ) – Hashtag *
• ({ }) – Curly Brackets

Question 2: What will be the output of running the following code?

value = 7
class A:
    value = 5

a = A()
a.value = 3
print(value)

• 5
• None of the above
• 3
• 7

Question 3: What will be the output of running the following code?

bravo = 3
b = B()
class B:
    bravo = 5
    print("Inside class B")
c = B()
print(b.bravo)

• Error
• None
• 5
• 3

Question 4: Which of the following keywords allows the program to continue execution without impacting any functionality or flow?

• break
• continue
• skip
• pass

Question 5: Which of the following is not a measure of Algorithmic complexity?

• Logarithmic Time
• Execution time
• Exponential Time
• Constant time

Question 6: Which of the following are the building blocks of Procedural programming?

• Objects and Classes
• Procedures and functions
• Variables and methods
• All of the options.

Question 7: True or False: Pure functions can modify global variables.

• True
• False

Question 8: Which of the following is an advantage of recursion?

• Easier to follow
• Recursive code can make your code look neater
• Easy to debug
• Recursion is memory efficient

Week 4: Programming in Python Coursera Quiz Answers

Quiz 1: Knowledge check: Modules

Question 1: Assuming there exists a module called ‘numpy’ with a function called ‘shape’ inside it, which of the following is NOT a valid syntax for writing an import statement? (Select all that apply)

• from numpy import *
• import shape from numpy
• import * from numpy
• import numpy as dn
• from numpy import shape as s

Question 2: Which of the following locations does the Python interpreter search for modules by default?

• PYTHONPATH or simply the environment variable that contains list of directories
• The current working directory
• Any user-specified location added to the System path using sys package
• Installation-dependent default directory

Question 3: We can import a text file using the import statement in Python:

• True
• False

Question 4: Which of the following statements is NOT true about the reload() function?

• You can use the reload() function multiple times for the same module in the given code.
• The reload() function can be used for making dynamic changes within code.
• The reload() function can be used to import modules in Python.
• You need to import a module before the reload() function can be used over it.

Question 5: Which of the following is NOT to be considered as an advantage of modular programming while using Python?

• Scope
• Reusability
• Simplicity
• Security

Question 6: Which of the following module types are directly available for import without any additional installation when you begin writing our code in Python? (Select all that apply)

• Modules in the current working directory of the Project
• Third-party packages from Python Package Index not present on the device
• User-defined modules in Home directory of the device
• Built-in modules

Quiz 2: Knowledge check: Popular Packages, Libraries and Frameworks

Question 1: Which of these is a popular package that is NOT primarily used in Web development?

• Django
• Scikit-learn
• Flask
• Pyramid

Question 2: Which of these packages can be applied in the field of Machine learning and Deep learning?

Select all the correct answers.

• PyTorch
• Pytest
• Keras
• Django
• TensorFlow

Question 3: Which of the following is not a type of web framework architecture?

• Asynchronous
• Microframework
• Synchronous
• Full-stack

Question 4: Pandas library in Python cannot be used for which of the following tasks?

• Visualisation such as graphs and charts.
• Cleaning, analyzing and maintaining data.
• Comparison of different columns in a table.

Question 5: Which of the following is not a built-in package in the Python standard library?

• os
• numpy
• math
• sys
• json

Quiz 3: Testing quiz

Question 1: State whether the following statement is True or False:

“Integration testing is where the application or software is tested as a whole and tested against the set requirements and expectations to ensure completeness”

• True
• False

Question 2: Which of the following is NOT primarily one of the four levels in testing?

• System testing
• Regression testing
• Unit testing
• Acceptance testing
• Integration testing

Question 3: Which of the following can be considered a valid testing scenario? (Select all that apply.)

• Broken links and images should be checked before loading a webpage
• Check for negative value acceptance in numeric field
• If the webpage resizes appropriately according to the device in use
• Deletion or form updation should request confirmation

Question 4: What can be considered as an ideal testing scenario?

• Using the minimal number of testing tools to find defects.
• Designing test cases in the shortest amount of time.
• Finding the maximum bugs and errors.
• Writing the least number of tests to find largest number of defects.

Question 5: Which job roles are not always a part of the testing lifecycle working on an application or product?

• Project Manager
• Programmers other than tester
• Tester
• Stakeholder

Quiz 4: Module quiz: Modules, packages, libraries and tools

Question 1: Which of the following is not true about Test-driven development?

• It ensures that the entire code is covered for testing.
• The process can also be called Red-Green refactor cycle.
• Test-driven development can only have one cycle of testing and error correction.
• In TDD, the requirements and standards are highlighted from the beginning.

Question 2: Which of the following is a built-in package for testing in Python?

• Selenium
• Robot Framework
• PyTest
• Pyunit or Unittest

Question 3: Which of the following is an important keyword in Python used for validation while doing Unit testing?

• yield
• assert
• async
• lambda

Question 4: Which of the following ‘V’s’ is not identified as a main characteristic of Big Data?

• Velocity
• Variability
• Volume
• Variety

Question 5: What will be the output of the following piece of code:

from math import pi
print(math.pi)

• There will be no output
• ImportError: No module named math
• 3.141592653589793
• NameError: name ‘math’ is not defined

Question 6: Which of the following is NOT primarily a package used for Image processing or data visualization?

• Matplotlib
• OpenCV
• Seaborn
• Scrapy

Question 7: _______ is/are the default package manager(s) for installing packages in Python.

• Python Package Index (pypi)
• pip
• Python Standard Library
• Built-in Module

Question 8: If you are working on some codeblock, which of the following can be ‘imported’ in it from external source?

Select all that apply.

• Variables
• Modules
• Packages
• Functions

Week 5: Programming in Python Coursera Quiz Answers

Quiz: End-of-Course Graded Assessment: Using Python

Question 1: Python is an interpreted language. Which of the following statements correctly describes an interpreted language?

• Python will save all code first prior to running.
• The source code is pre-built and compiled before running.
• The source code is converted into bytecode that is then executed by the Python virtual machine.
• Python needs to be built prior to it being run.

Question 2: Why is indentation important in Python?

• The code will compile faster with indentation.
• Python used indentation to determine which code block starts and ends.
• It makes the code more readable.
• The code will be read in a sequential manner

Question 3: What will be the output of the following code?

names = ["Anna", "Natasha", "Mike"]
names.insert(2, "Xi")
print(names)

• [“Anna”, “Natasha”, “Xi”, “Mike”]
• [“Anna”, “Natasha”, 2, “Xi”, “Mike”]
• [“Anna”, “Xi”, ”Mike” ]
• [“Anna”, “Natasha”, Xi]

Question 4: What will be the output of the code below?

for x in range(1, 4):
    print(int((str((float(x))))))

• 1.0, 2.0
• 1 , 2
• “one”, “two”
• Will give an error

Question 5: What will be the output of the following code:

sample_dict = {1: 'Coffee', 2: 'Tea', 3: 'Juice'}
for x in sample_dict:
    print(x)

• {1 2 3}
• (1, ‘Coffee’)

(2, ‘Tea’)

(3, ‘Juice’)

• ‘Coffee’, ‘Tea’, ‘Juice’
• 1 2 3

Question 6: What will be the output of the recursive code below?

def recursion(num):
    print(num)
    next = num - 3
    if next > 1:
        recursion(next)

recursion(11)

• 2 5 8 11
• 11 8 5 2
• 2 5 8
• 8 5 2

Question 7: What will be the type of time complexity for the following piece of code:

• Logarithmic Time
• Constant Time
• Quadratic Time
• Linear Time

Question 8: What will be the output of the code below:

str = 'Pomodoro'
for l in str:
if l == 'o':
    str = str.split()
    print(str, end=", ")

• ‘P’, ‘m’, ‘d’, ‘o’]
• Will throw an error
• [‘Pomodoro’, ‘modoro’, ‘doro‘, ‘ro’]
• [‘Pomodoro’]

Question 9: Find the output of the code below:

def d():
    color = "green"
    def e():
        nonlocal color
        color = "yellow"
    e()
    print("Color: " + color)
    color = "red"
color = "blue"
d()

• red
• green
• blue
• yellow

Question 10: Find the output of the code below:

num = 9
class Car:
    num = 5
    bathrooms = 2

def cost_evaluation(num):
    num = 10
    return num

class Bike():
    num = 11

cost_evaluation(num)
car = Car()
bike = Bike()
car.num = 7
Car.num = 2
print(num)

• 2
• 9
• 10
• 5

Question 11: Which of the following is the correct implementation that will return True if there is a parent class P, with an object p and a sub-class called C, with an object c?

• print(issubclass(P,C))
• print(issubclass(C,P))
• print(issubclass(C,c))
• print(issubclass(p,C))

Question 12: Django is a type of:

• Full-stack framework
• Micro-framework
• Asynchronous framework

Question 13: Which of the following is not true about Integration testing:

• Tests the flow of data from one component to another.
• It is where the application is tested as a whole.
• Primarily dealt by the tester.
• It combines unit tests.

Question 14: While using pytest for testing, it is necessary to run the file containing the main code before we can run the testing file containing our unit tests.

• False
• True

Question 15: What will be the output of the code below:

class A:
   def a(self):
       return "Function inside A"

class B:
   def a(self):
       return "Function inside B"

class C:
   pass

class D(C, A, B):
   pass

d = D()
print(d.a())

• Function inside A
• None of the above
• Function inside B
• No output

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