Python MCQ Miscellaneous | Set 1

Python MCQ Miscellaneous Set 1 with answers and explanations for placement tests and job interviews. These solved Python MCQ Miscellaneous Set 1 are useful for the campus placement for all freshers including Engineering Students, MCA students, Computer and IT Engineers, etc.

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Guideline of Python MCQ Miscellaneous Set 1:

This Python MCQ Miscellaneous Set 1 is intended for checking your Python knowledge. It takes 1 hour 40 minutes to pass the Python Quiz. If you don’t finish the Python Miscellaneous MCQ within the mentioned time, all the unanswered questions will count as wrong. You can miss the questions by clicking the “Next” button and return to the previous questions by the “Previous” button. Every unanswered question will count as wrong. MCQ on Python has features of randomization which feel you a new question set at every attempt.

In this Python MCQ Miscellaneous Set 1, we have also implemented a feature that not allowed the user to see the next question or finish the quiz without attempting the current Python MCQ.

You have 1 hours 40 minutes to take the Python MCQs

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Python MCQ

Python MCQ: Python Multiple Choice Questions and Answers

1 / 144

According to the PEP 8 coding style guidelines, how should constant values be named in Python?

in camel case without using underscores to separate words -- e.g. maxValue = 255

in lowercase with underscores to separate words -- e.g. max_value = 255

in all caps with underscores separating words -- e.g. MAX_VALUE = 255

in mixed case without using underscores to separate words -- e.g. MaxValue = 255

2 / 144

What is the proper way to write a list comprehension that represents all the keys in this dictionary?

fruits = {'Apples': 5, 'Oranges': 3, 'Bananas': 4}

fruit_names = [x in fruits.keys() for x]

fruit_names = for x in fruits.keys() *

fruit_names = [x for x in fruits.keys()]

fruit_names = x for x in fruits.keys()

3 / 144

Review the code below. What is the correct syntax for changing the price to 1.5?

fruit_info = {
'fruit': 'apple',
'count': 2,
'price': 3.5
}

fruit_info ['price'] = 1.5

my_list [3.5] = 1.5

1.5 = fruit_info ['price]

my_list['price'] == 1.5

4 / 144

What is the correct syntax for creating a variable that is bound to a set?

myset = {0, 'apple', 3.5}

myset = to_set(0, 'apple', 3.5)

myset = (0, 'apple', 3.5).to_set()

myset = (0, 'apple', 3.5).set()

5 / 144

What is the output of the following Python Programs?

nameList = ['Harsh', 'Pratik', 'Bob', 'Dhruv']

print (nameList[1][-1])

6 / 144

Which statement does NOT describe the object-oriented programming concept of encapsulation?

It protects the data from outside interference.

A parent class is encapsulated and no data from the parent class passes on to the child class.

It keeps data and the methods that can manipulate that data in one place.

It only allows the data to be changed by methods.

7 / 144

What does calling namedtuple on a collection type return?

a tuple subclass with iterable named fields

a generic object class with non-iterable named fields

a generic object class with iterable parameter fields

a tuple subclass with non-iterable parameter fields

8 / 144

What is the runtime complexity of searching for an item in a binary search tree?

The runtime for searching in a binary search tree is O(1) because each node acts as a key, similar to a dictionary.

The runtime for searching in a binary search tree is O(n!) because every node must be compared to every other node.

The runtime for searching in a binary search tree is generally O(h), where h is the height of the tree.

The runtime for searching in a binary search tree is O(n) because every node in the tree must be visited.

9 / 144

What is the output of the following Python Programs?

a = "Aticleworld"

b = 13

print (a + b)

Compiler Error

Aticleworld13

Aticleworld

10 / 144

What is the runtime of accessing a value in a dictionary by using its key?

O(n), also called linear time.

O(log n), also called logarithmic time.

O(n^2), also called quadratic time.

O(1), also called constant time.

11 / 144

tuple = {}
tuple[(1,2,4)] = 8
tuple[(4,2,1)] = 10
tuple[(1,2)] = 12
_sum = 0
for k in tuple:
  _sum += tuple[k]
print(len(tuple) + _sum)

12 / 144

What would this expression return?

college_years = ['Freshman', 'Sophomore', 'Junior', 'Senior']
return list(enumerate(college_years, 2019))

[('Freshman', 2019), ('Sophomore', 2020), ('Junior', 2021), ('Senior', 2022)]

[(2019, 2020, 2021, 2022), ('Freshman', 'Sophomore', 'Junior', 'Senior')]

[('Freshman', 'Sophomore', 'Junior', 'Senior'), (2019, 2020, 2021, 2022)]

[(2019, 'Freshman'), (2020, 'Sophomore'), (2021, 'Junior'), (2022, 'Senior')]

13 / 144

What is the output of the following Python Programs?

d1 = {"john":40, "peter":45}
d2 = {"john":466, "peter":45}
print (d1 > d2)

True

False

TypeError

Error

14 / 144

When does a for loop stop iterating?

when it encounters an infinite loop

when it encounters an if/else statement that contains a break keyword

when it has assessed each item in the iterable it is working on or a break keyword is encountered

when the runtime for the loop exceeds O(n^2)

15 / 144

What is the algorithmic paradigm of quick sort?

backtracking

divide and conquer

dynamic programming

decrease and conquer

16 / 144

What is the output of the following Python Programs?

counter = {}

def addToCounter(country):
  if country in counter:
    counter[country] += 1
  else:
    counter[country] = 1

addToCounter('Aticleworld')
addToCounter('Apporv')
addToCounter('Mysuperblist')

print (len(counter))

Aticleworld

Apoorv

Mysuperblist

17 / 144

What is the output of the following Python Programs?

for i in range(2):
  print (i)

for i in range(4,6):
  print (i)

0 2 4 5

0 1 3 5

0 1 4 5

0 2 4 6

18 / 144

What is the output?

r = lambda q: q * 2
s = lambda q: q * 3
x = 2
x = r(x)
x = s(x)
x = r(x)
print (x)

19 / 144

What is the term used to describe items that may be passed into a function?

arguments

paradigms

attributes

decorators

20 / 144

What is the output of the following Python Programs?

D = dict()
for i in range (3):
  for j in range(2):
    D[i] = j
print(D)

{0: 0, 1: 0, 2: 0}

{0: 0, 1: 0, 2: 0, 0: 1, 1: 1, 2: 1}

{0: 1, 1: 1, 2: 1}

TypeError: Immutable object

21 / 144

. Which statement about the class methods is true?

A class method holds all of the data for a particular class.

A class method can modify the state of the class, but it cannot directly modify the state of an instance that inherits from that class.

A class method is a regular function that belongs to a class, but it must return None

A class method is similar to a regular function, but a class method does not take any arguments.

22 / 144

What built-in list method would you use to remove items from a list?

".delete()" method

pop(my_list)

del(my_list)

".pop()" method

23 / 144

What is the correct syntax for defining a class called Game?

class Game: pass

def Game(): pass

def Game: pass

class Game(): pass

24 / 144

What is one of the most common use of Python's sys library?

to capture command-line arguments given at a file's runtime

to connect various systems, such as connecting a web front end, an API service, a database, and a mobile app

to take a snapshot of all the packages and libraries in your virtual environment

to scan the health of your Python ecosystem while inside a virtual environment

25 / 144

Suppose a Game class inherits from two parent classes: BoardGame and LogicGame. Which statement is true about the methods of an object instantiated from the Game class?

When instantiating an object, the object doesn't inherit any of the parent class's methods.

When instantiating an object, the object will inherit the methods of whichever parent class has more methods.

When instantiating an object, the programmer must specify which parent class to inherit methods from.

An instance of the Game class will inherit whatever methods the BoardGame and LogicGame classes have.

26 / 144

If you don't explicitly return a value from a function, what happens?

The function will return a RuntimeError if you don't return a value.

If the return keyword is absent, the function will return None.

If the return keyword is absent, the function will return True.

The function will enter an infinite loop because it won't know when to stop executing its code.

27 / 144

What is the runtime complexity of adding an item to a stack and removing an item from a stack?

Add items to a stack in O(1) time and remove items from a stack on O(n) time.

Add items to a stack in O(1) time and remove items from a stack in O(1) time.

Add items to a stack in O(n) time and remove items from a stack on O(1) time.

Add items to a stack in O(n) time and remove items from a stack on O(n) time.

28 / 144

What is the output of the following Python Programs?

nameList = ['Aml', 'Apporv', 'kumar', 'pritosh']

pos = nameList.index("Aticleworld")

print (pos * 5)

ValueError: 'Aticleworld' is not in list

pritosh

Aml

29 / 144

What happens when you use the build-in function any() on a list?

The any() function will randomly return any item from the list.

The any() function returns True if any item in the list evaluates to True. Otherwise, it returns False.

The any() function takes as arguments the list to check inside, and the item to check for. If "any" of the items in the list match the item to check for, the function returns True.

The any() function returns a Boolean value that answers the question "Are there any items in this list?"

30 / 144

What is the output of the following Python Programs?

import re
p = re.compile('\d+')
print(p.findall("I met him once at 11 A.M. on 4th July 1886"), end = " ")
p = re.compile('\d')
print(p.findall("I went to him at 11 A.M."))

[’11’, ‘4’, ‘1886’] [’11’]

['11', '4', '1886'] ['1', '1']

[’11’, ‘4’, ‘1886’, ’11’]

[‘1141886’] [‘1’, ‘1’]

31 / 144

Why would you use mixin?

You use a mixin to force a function to accept an argument at runtime even if the argument wasn't included in the function's definition.

You use a mixin to allow a decorator to accept keyword arguments.

You use a mixin to make sure that a class's attributes and methods don't interfere with global variables and functions.

If you have many classes that all need to have the same functionality, you'd use a mixin to define that functionality.

32 / 144

What is the output of the following Python Programs?

print ('\x25\x26')

2526

Compiler Error

33 / 144

What is the output of the following Python Programs?

L = [1, 3, 5, 7, 9]
print(L.pop(-3), end = ' ')
print(L.remove(L[0]), end = ' ')
print(L)

5 1 [3, 7, 9]

5 None [3, 7, 9]

5 1 [3, 7, 9]

Compiler Error

34 / 144

What is the output of the following Python Programs?

x = ['ab', 'cd']
for i in x:
  i.upper()
print(x)

Error

['cd', 'ab']

['ab', 'cd']

None of these

35 / 144

What is the primary difference between lists and tuples?

You can access a specifc element in a list by indexing to its position, but you cannot access a specific element in a tuple unless you iterate through the tuple

Lists are mutable, meaning you can change the data that is inside them at any time. Tuples are immutable, meaning you cannot change the data that is inside them once you have created the tuple.

Lists are immutable, meaning you cannot change the data that is inside them once you have created the list. Tuples are mutable, meaning you can change the data that is inside them at any time.

Lists can hold several data types inside them at once, but tuples can only hold the same data type if multiple elements are present.

36 / 144

Which statement accurately describes how items are added to and remnoved from a stack?

a stacks adds items to one side and removes items from the other side.

a stacks adds items to the top and removes items from the top.

a stacks adds items to the top and removes items from anywhere in the stack.

a stacks adds items to either end and removes items from either end.

37 / 144

What is key difference between a set and a list?

A set is an ordered collection unique items. A list is an unordered collection of non-unique items.

Elements can be retrieved from a list but they cannot be retrieved from a set.

A set is an ordered collection of non-unique items. A list is an unordered collection of unique items.

A set is an unordered collection unique items. A list is an ordered collection of non-unique items.

38 / 144

What is the output of the following Python Programs?

value = [1, 2, 3, 4, 5]
try:
  value = value[5]/0
except (IndexError, ZeroDivisionError):
  print('Aticleworld ', end = '')
else:
  print('GFG ', end = '')
finally:
  print('Atic ', end = '')

Runtime Error

Aticleworld Atic

Compiler Error

Aticleworld

39 / 144

What is the output of the following Python Programs?

def test():
  "I love Aticleworld.com"
  return 1

print (test.__doc__[17:21])

d.co

d.com

Compiler Error

Aticleworld

40 / 144

What is the output of the following program?

List = [True, 50, 10]
List.insert(2, 5)
print(List, "Sum is: ", sum(List))

[True, 50, 10, 5] Sum is: 66

TypeError: unsupported operand type(s) for +: ‘int’ and ‘str’

[True, 50, 5, 10] Sum is: 65

[True, 50, 5, 10] Sum is: 66

41 / 144

What is the output of the following Python Programs?

list1 = range(100, 110) 

print ("index of element 105 is : ", list1.index(105))

index of element 105 is : 3

index of element 105 is : 4

index of element 105 is : 5

Compiler Error

42 / 144

Assuming the node is in a singly linked list, what is the runtime complexity of searching for a specific node within a singly linked list?

The runtime is O(n) because in the worst case, the node you are searching for is the last node, and every node in the linked list must be visited.

The runtime is O(nk), with n representing the number of nodes and k representing the amount of time it takes to access each node in memory.

The runtime cannot be determined unless you know how many nodes are in the singly linked list.

The runtime is O(1) because you can index directly to a node in a singly linked list.

43 / 144

What is the term to describe this code?

count, fruit, price = (2, 'apple', 3.5)

tuple assignment

tuple unpacking

tuple matching

tuple duplication

44 / 144

Why is it considered good practice to open a file from within a Python script by using the with keyword?

The with keyword lets you choose which application to open the file in.

The with keyword acts like a for loop, and lets you access each line in the file one by one.

There is no benefit to using the with keyword for opening a file in Python.

When you open a file using the with keyword in Python, Python will make sure the file gets closed, even if an exception or error is thrown.

45 / 144

What is the output of the following Python Programs?

True = False
while True:
  print(True)
  break

False

True

Error

None of these

46 / 144

What is the proper way to define a function?

def getMaxNum(list_of_nums): # body of function goes here

func get_max_num(list_of_nums): # body of function goes here

func getMaxNum(list_of_nums): # body of function goes here

def get_max_num(list_of_nums): # body of function goes here explanation

47 / 144

What is the output of the following Python Programs?

dictionary = {1:'1', 2:'2', 3:'3'}
del dictionary[1]
dictionary[1] = '10'
del dictionary[2]
print (len(dictionary))

None of these

48 / 144

What is the output of the following Python Programs?

set1 = {1, 2, 3}
set2 = {4, 5, 6}
print(len(set1 + set2))

Error

None of these

49 / 144

What statement about static methods is true?

Static methods are called static because they always return None.

Static methods can be bound to either a class or an instance of a class.

Static methods serve mostly as utility methods or helper methods, since they can't access or modify a class's state.

Static methods can access and modify the state of a class or an instance of a class.

50 / 144

What is the output of the following Python Programs?

def addToList(listcontainer):
  listcontainer += [10]

mylistContainer = [10, 20, 30, 40]
addToList(mylistContainer)
print (len(mylistContainer))

Compiler Error

51 / 144

What is the output of the following Python Programs?

for i in [1, 2, 3, 4][::-1]:
  print (i)

4 3 2 1

1 2 3 4

4 3 2 1 -1

None of these

Error

52 / 144

What is the output of the following Python Programs?

data = 50
try:
  data = data/0
except ZeroDivisionError:
  print('Cannot divide by 0 ', end = '')
else:
  print('Division successful ', end = '')

try:
  data = data/5
except:
  print('Inside except block ', end = '')
else:
  print('GFG', end = '')

Cannot divide by 0 Inside except block GFG

Cannot divide by 0 GFG

Cannot divide by 0

Cannot divide by 0 Inside except block

53 / 144

What is the output of the following Python Programs?

L1 = []
L1.append([1, [2, 3], 4])
L1.extend([7, 8, 9])
print(L1[0][1][1] + L1[2])

54 / 144

What is the output?

a = True
b = False
c = False

if a or b and c:
  print ("Aticleworld")
else:
  print (".com")

Aticleworld

Aticleworld.com

Compiler Error

None of these

55 / 144

What is the output of the following Python Programs?

set1 = {1, 2, 3}
set2 = set1.copy()
set2.add(4)
print(set1)

{1, 2, 3, 4, 5}

{1, 2, 3, 4}

{1, 2, 3}

Invalid Syntax

56 / 144

What is the output of the following Python Programs?

sets = {3, 4, 5}
sets.update([1, 2, 3])
print(sets)

{1, 2, 3, 4, 5}

{3, 4, 5, 1, 2, 3}

{1, 2, 3, 3, 4, 5}

{1, 2, 3, 3, 4, 5, 6}

57 / 144

What is a lambda function ?

any function that makes use of scientific or mathematical constants, often represented by Greek letters in academic writing

a function that get executed when decorators are used

any function whose definition is contained within five lines of code or fewer

a small, anonymous function that can take any number of arguments but has only expression to evaluate

58 / 144

What is the output of the following Python Programs?

L1 = [1, 1.33, 'ATIC', 0, 'NO', None, 'G', True]
val1, val2 = 0, ''
for x in L1:
  if(type(x) == int or type(x) == float):
    val1 += x
  elif(type(x) == str):
    val2 += x
  else:
    break
print(val1, val2)

2.33 ATICNONoneGTrue

2.33 ATICG

2.33 ATICNO

Compiler Error

59 / 144

What is meant by the phrase "space complexity"?

How many microprocessors it would take to run your code in less than one second

How many lines of code are in your code file

The amount of space taken up in memory as a function of the input size

How many copies of the code file could fit in 1 GB of memory

60 / 144

What built-in Python data type is commonly used to represent a queue?

dictionary

set

None. You can only build a stack from scratch.

list

61 / 144

What is the output of the following Python Programs?

sets = {1, 2, 3, 4, 4}
print(sets)

{1, 2, 3, 4}

{1, 2, 3}

{1, 2, 3, 4, 5}

Compiler Error

62 / 144

What is the output of the following Python Programs?

tuple=("Check")*3
print(tuple)

Syntax Error

None

(3Check)

CheckCheckCheck

63 / 144

What is an abstract class?

An abstract class is the name for any class from which you can instantiate an object.

Abstract classes must be redefined any time an object is instantiated from them.

Abstract classes must inherit from concrete classes.

An abstract class exists only so that other "concrete" classes can inherit from the abstract class.

64 / 144

What is the output?

a = 4.5
b = 2
print (a//b)

4.5

2.25

None of these

65 / 144

What does calling namedtuple on a collection type return?

a generic object class with iterable parameter fields

a generic object class with non-iterable named fields

a tuple subclass with non-iterable parameter fields

a tuple subclass with iterable named fields

66 / 144

What is the output of the following Python Programs?

L1 = [1, 2, 3, 4]
L2 = L1
L3 = L1.copy()
L4 = L3
L1[0] = [5]
print(L1, L2, L3, L4)

[5, 2, 3, 4] [5, 2, 3, 4] [5, 2, 3, 4] [1, 2, 3, 4]

[5, 2, 3, 4] [5, 2, 3, 4] [1, 2, 3, 4] [1, 2, 3, 4]

[5, 2, 3, 3] [5, 2, 3, 4] [5, 2, 2, 4] [1, 2, 3, 4]

[[5], 2, 3, 4] [[5], 2, 3, 4] [1, 2, 3, 4] [1, 2, 3, 4]

67 / 144

What is runtime complexity of the list's built-in .append() method?

O(1), also called constant time

O(log n), also called logarithmic time

O(n^2), also called quadratic time

O(n), also called linear time

68 / 144

Which of the following is TRUE About how numeric data would be organised in a binary Search tree?

For any given Node in a binary Search Tree, the child node to the left is less than the value of the given node and the child node to its right is greater than the given node. (Not Sure)

Binary Search Tree cannot be used to organize and search through numeric data, given the complication that arise with very deep trees.

The top node of the binary search tree would be an arbitrary number. All the nodes to the left of the top node need to be less than the top node's number, but they don't need to ordered in any particular way.

The smallest numeric value would go in the top most node. The next highest number would go in its left child node, the the next highest number after that would go in its right child node. This pattern would continue until all numeric values were in their own node.

69 / 144

What is the output of the following Python Programs?

List =[0, 5, 2, 0, 'Atic', '', []]
print(list(filter(bool, List)))

[0, 0, ]

[0, 5, 2, 0, ‘Atic’, ”, []]

[5, 2, 'Atic']

Error

70 / 144

What is a base case in a recursive function?

A base case is the condition that allows the algorithm to stop recursing. It is usually a problem that is small enough to solve directly.

The base case is summary of the overall problem that needs to be solved.

The base case is passed in as an argument to a function whose body makes use of recursion.

The base case is similar to a base class, in that it can be inherited by another object.

71 / 144

What are attributes?

Attributes are long-form version of an if/else statement, used when testing for equality between objects.

Attributes are a way to hold data or describe a state for a class or an instance of a class.

Attributes are strings that describe characteristics of a class.

Function arguments are called "attributes" in the context of class methods and instance methods.

72 / 144

What is the output of the following Python Programs?

values = [1, 2, 3, 4]
numbers = set(values)

def checknums(num):
  if num in numbers:
    return True
  else:
    return False

for i in filter(checknums, values):
  print (i)

2 3 4 6

Compiler Error

1 2 3 4

1 2 3 4 5

73 / 144

What symbol(s) do you use to assess equality between two elements?

74 / 144

What is the output of the following Python Programs?

def REVERSE(L):
  L.reverse()
  return(L)
def YKNJS(L):
  List = []
  List.extend(REVERSE(L))
  print(List)

L = [1, 3.1, 5.31, 7.531]
YKNJS(L)

[1, 4.1, 2.31, 7.531]

[1, 3.1, 5.31, 7.531]

[7.531, 5.31, 3.1, 1]

None of these

75 / 144

What is the output of the following Python Programs?

my_tuple = (6, 9, 0, 0)
my_tuple1 = (5, 2, 3, 4)
print (my_tuple > my_tuple1)

Error

False

True

76 / 144

What is the correct way to run all the doctests in a given file from the command line?

python3 -m doctest

python3

python3 rundoctests

python3 doctest

77 / 144

What is the output of the following Python Programs?

my_string = "World"
i = "i"
while i in my_string:
  print(i, end =" ")

Aticleworld

None

iiiii.......

Compilation error

78 / 144

What is the output?

count = 1

def test():

  global count

  for i in (1, 2, 3):
    count += 1

test()

print (count)

79 / 144

What is the output of the following Python Programs?

print(bool('False'))
print(bool())

False, False

False, True

True, False

True, True

80 / 144

Which statement about static method is true?

Static methods can be bound to either a class or an instance of a class.

Static methods can access and modify the state of a class or an instance of a class.

Static methods serve mostly as utility or helper methods, since they cannot access or modify a class's state.

Static methods are called static because they always return None.

81 / 144

What is a key difference between a set and a list?

A set is an ordered collection of non-unique items. A list is an unordered collection of unique items.

A set is an ordered collection of unique items. A list is an unordered collection of non-unique items.

Elements can be retrieved from a list but they cannot be retrieved from a set.

A set is an unordered collection of unique items. A list is an ordered collection of non-unique items.

82 / 144

What is the output of the following Python Programs?

a = 2
b = '3.77'
c = -8
str1 = '{0:.4f} {0:3d} {2} {1}'.format(a, b, c)
print(str1)

2.0000 2 -8 3.77

2 3.77 -8 3.77

2.000 3 -8 3.77

None of these

83 / 144

What is the output of the following Python Programs?

i = 0
while i < 3:
  print(i)
  i += 1
else:
  print(0)

0 1 2 0

0 1 2 3 0

0 1 2

None of these

84 / 144

What is the correct syntax for defining a class called "Game", if it inherits from a parent class called "LogicGame"?

class Game.LogicGame(): pass

def Game(LogicGame): pass

class Game(LogicGame): pass

def Game.LogicGame(): pass

85 / 144

What is an instance method?

Instance methods can modify the state of an instance or the state of its parent class.

Instance methods hold data related to the instance.

An instance method is any class method that doesn't take any arguments.

An instance method is a regular function that belongs to a class, but it must return None.

86 / 144

What is the output of the following Python Programs?

class Test:
  def __init__(self, id):
    self.id = id

manager = Test(100)

manager.__dict__['life'] = 49

print (manager.life + len(manager.__dict__))

87 / 144

What is the output of the following Python Programs?

check1 = ['Learn', 'Quiz', 'Practice']
check2 = check1
check3 = check1[:]

check2[0] = 'Aticleworld'
check3[1] = 'Mcq'

count = 0
for c in (check1, check2, check3):
  if c[0] == 'Aticleworld':
    count += 1
  if c[1] == 'Mcq':
    count += 10

print (count)

Compiler Error

88 / 144

What is the correct syntax for instantiating a new object of the type Game?

my_game = class.Game()

my_game = class(Game)

my_game = Game()

my_game = Game.create()

89 / 144

What is the output of the following Python Programs?

dictionary1 = {'Amazon' : 1,
      'Facebook' : 2,
      'Microsoft' : 3
      }
dictionary2 = {'Atic' : 1,
      'Microsoft' : 2,
      'Youtube' : 3
      }
dictionary1.update(dictionary2);
for key, values in dictionary1.items():
  print(key, values)

Amazon 1 Facebook 2 Microsoft 2 Atic 1 Youtube 3

Compiler Error

Runtime Error

None of these

90 / 144

What is the output of the following program?

from math import *
a = 2.13
b = 3.7777
c = -3.12
print(int(a), floor(b), ceil(c), fabs(c))

2 4 -3 3

2 3 -3 3.12

2 2 -3 3.12

Error

91 / 144

What is the output of the following Python Programs?

x = 123
for i in x:
  print(i)

Error

1 2 3 ...123

1 2 3 ...122

None of these

92 / 144

What is the output of the following Python Programs?

Aticleworld = [1, 2, 3, 4]

# List will look like as [1,2,3,4,[5,6,7,8]]
Aticleworld.append([5,6,7,8])
print(len(Aticleworld))


print(Aticleworld)

5 , [1, 2, 3, 4, [5, 6, 7, 8]]

6 , [1, 2, 3, 4, [1, 6, 7, 8]]

4 , [7, 8, 3, 4, [3, 6, 7, 8]]

None of these

93 / 144

What is the output of the following Python Programs?

class A(object):
  val = 1

class B(A):
  pass

class C(A):
  pass

print (A.val, B.val, C.val)
B.val = 2
print (A.val, B.val, C.val)
A.val = 3
print (A.val, B.val, C.val)

1 1 1 1 2 1 3 2 3

Compiler Error

None of these

94 / 144

my_string = 'Aticleworld'
for i in range(len(my_string)):
  my_string[i].upper()
print (my_string)

Aticleworld

ATICLEWORLD

Error

None of these

95 / 144

Why would you use a decorator?

A decorator is similar to a class and should be used if you are doing functional programming instead of object oriented programming.

A decorator is a visual indicator to someone reading your code that a portion of your code is critical and should not be changed.

You use the decorator to alter the functionality of a function without the without having to modify the functions code.

An import statement is preceded by a decorator, python knows to import the most recent version of whatever package or library is being imported.

96 / 144

What does it mean for a function to have linear runtime?

You did not use very many advanced computer programming concepts in your code.

The difficulty level your code is written at is not that high.

It will take your program less than half a second to run.

The amount of time it takes the function to complete grows linearly as the input size increases.

97 / 144

What is the output of the following Python Programs?

list = ['a', 'b', 'c']*-3
print (list)

()

[]

Compiler Error

None of these

98 / 144

What is the output of the following Python Programs?

line = "What will have so will"
L = line.split('a')
for i in L:
  print(i, end=' ')

[‘What’, ‘will’, ‘have’, ‘so’, ‘will’]

What will have so will

Wh t will h ve so will

None of these

99 / 144

What happens when you use the built-in function all() on a list?

The all() function returns a Boolean value that answers the question "Are all the items in this list the same?

The all() function returns True if all the items in the list can be converted to strings. Otherwise, it returns False.

The all() function will return all the values in the list.`

The all() function returns True if all items in the list evaluate to True. Otherwise, it returns False.

100 / 144

What is the output of the following Python Programs?

print(not(4>3))
print(not(5&5))

True, False

True, True

False, False

False ,True

101 / 144

What is the output of the following Python Programs?

temp = 'Aticleworld 2016'
data = [x for x in (int(x) for x in temp if x.isdigit()) if x%2 == 0]
print(data)

Compilation error

Runtime error

[2, 0, 6]

[0, 2, 0, 6, 6]

102 / 144

What is the output of the following Python Programs?

temp = ['Love', 'Aticle', 'World']
arr = [i[0].upper() for i in temp]
print(arr)

['L', 'A', 'W']

Love

Aticle

World

103 / 144

What is the output of the following Python Programs?

T = (1, 2, 3, 4, 5, 6, 7, 8)
print(T[T.index(5)], end = " ")
print(T[T[T[6]-3]-6])

4 0

4 1

5 8

5 IndexError

104 / 144

What is the output of the following Python Programs?

set1 = {1, 2, 3}
set2 = set1.add(4)
print(set2)

{1, 2, 3}

{1, 2, 3, 4}

Invalid Syntax

None

105 / 144

What is the output of the following Python Programs?

tuple = (1, 2, 3, 4)
tuple.append( (5, 6, 7) )
print(len(my_tuple))

Error

106 / 144

What value would be returned by this check for equality?

5 != 6

yes

False

True

None

107 / 144

What data structure does a binary tree degenerate to if it isn't balanced properly?

linked list

queue

set

OrderedDict

108 / 144

What is the output of the following Python Programs?

dictionary = {}
dictionary[1] = 1
dictionary['1'] = 2
dictionary[1] += 1

sum = 0
for k in dictionary:
  sum += dictionary[k]

print (sum)

Compiler Error

109 / 144

Which of these is NOT a characteristic of namedtuples?

You can assign a name to each of the namedtuple members and refer to them that way, similarly to how you would access keys in dictionary.

Each member of a namedtuple object can be indexed to directly, just like in a regular tuple.

namedtuples are just as memory efficient as regular tuples.

No import is needed to use namedtuples because they are available in the standard library.

110 / 144

What is the purpose of an if/else statement?

An if/else statement tells the computer which chunk of code to run if the instructions you coded are incorrect

An if/else statement runs one chunk of code if all the imports were successful, and another chunk of code if the imports were not successful

An if/else statement executes one chunk of code if a condition it true, but a different chunk of code if the condition is false

An if/else statement tells the computer which chunk of code to run if the is enough memory to handle it. and which chunk of code to run if there is not enough memory to handle it

111 / 144

What would this expression return? How does defaultdict work?

defaultdict will automatically create a dictionary for you that has keys which are the integers 0-10.

defaultdict forces a dictionary to only accept keys that are of the types specified when you created the defaultdict (such as string or integers).

If you try to access a key in a dictionary that doesn't exist, defaultdict will create a new key for you instead of throwing a KeyError.

defaultdict stores a copy of a dictionary in memory that you can default to if the original gets unintentionally modified.

112 / 144

What would happen if you did not alter the state of the element that an algorithm is operating on recursively?

You do not have to alter the state of the element the algorithm is recursing on.

You would eventually get a KeyError when the recursive portion of the code ran out of items to recurse on.

You would get a RuntimeError: maximum recursion depth exceeded.

The function using recursion would return None.

113 / 144

What is the output of the following Python Programs?

dictionary1 = {'Atic' : 1,
      'World' : 2,
      'Superb' : 3
      }
print(dictionary1['World']);

Compilation error due to duplicate keys

Runtime time error due to duplicate keys

114 / 144

What is the purpose of the self keyword when defining or calling methods on an instance of an object?

self refers to the class that was inherited from to create the object using self.

There is no real purpose for the self method. It's just legacy computer science jargon that Python keeps to stay consistent with other programming languages.

self means that no other arguments are required to be passed into the method.

self refers to the instance whose method was called.

115 / 144

What is the output of the following Python Programs?

import sys
L1 = tuple()
print(sys.getsizeof(L1), end = " ")
L1 = (1, 2)
print(sys.getsizeof(L1), end = " ")
L1 = (1, 3, (4, 5))
print(sys.getsizeof(L1), end = " ")
L1 = (1, 2, 3, 4, 5, [3, 4], 'p', '8', 9.777, (1, 3))
print(sys.getsizeof(L1))

48 64 72 128

48 144 192 480

32 34 35 42

None of these

116 / 144

What is the output of the following Python Programs?

L = list('123456')
L[0] = L[5] = 0
L[3] = L[-2]
print(L)

[0, '2', '3', '5', '5', 0]

[‘6’, ‘2’, ‘3’, ‘5’, ‘5’, ‘6’]

[‘0’, ‘2’, ‘3’, ‘5’, ‘5’, ‘0’]

Error

117 / 144

What is the purpose of the "self" keyword when defining or calling instance methods?

self means that no other arguments are required to be passed into the method.

There is no real purpose for the self method; it's just historic computer science jargon that Python keeps to stay consistent with other programming languages.

self refers to the instance whose method was called.

self refers to the class that was inherited from to create the object using self.

118 / 144

What is the output of the following Python Programs?

D = {1 : 1, 2 : '2', '1' : 1, '2' : 3}
D['1'] = 2
print(D[D[D[str(D[1])]]])

'2'

KeyError

119 / 144

What is the output of the following Python Programs?

D = {1 : {'A' : {1 : "A"}, 2 : "B"}, 3 :"C", 'B' : "D", "D": 'E'}
print(D[D[D[1][2]]], end = " ")
print(D[D[1]["A"][2]])

D C

E B

D B

E KeyError

120 / 144

What is the output of the following Python Programs?

data = [x for x in range(5)]
temp = [x for x in range(7) if x in data and x%2==0]
print(temp)

0, 2, 4, 6]

[0, 1, 2, 3, 4, 5]

[0, 2, 4]

Compiler Error

121 / 144

What is the output?

a = True
b = False
c = False

if not a or b:
  print (1)
elif not a or not b and c:
  print (2)
elif not a or b or not b and a:
  print (3)
else:
  print (4)

122 / 144

What is the output of the following Python Programs?

list = ['a', 'b', 'c', 'd', 'e']
print (list[10:])

Compiler Error

()

[]

None of these

123 / 144

What is the output of the following Python Programs?

value = [1, 2, 3, 4]
data = 0
try:
  data = value[4]
except IndexError:
  print('GFG', end = '')
except:
  print('Aticleworld ', end = '')

Aticleworld

GFG Aticleworld

GFG

Compiler Error

124 / 144

What is the output of the following Python Programs?

mylist = ['Aticle', 'World']
for i in mylist:
  i.upper()
print(mylist)

[None, None]

['ATICLE', 'WORLD']

['Aticle', 'World']

Unexpected

125 / 144

What is the definition of abstraction as applied to object-oriented Python?

Abstraction means that a different style of code can be used, since many details are already known to the program behind the scenes.

Abstraction means the implementation is hidden from the user, and only the relevant data or information is shown.

Abstraction means that the data and the functionality of a class are combined into one entity.

Abstraction means that a class can inherit from more than one parent class.

126 / 144

What is the output of the following Python Programs?

data = [2, 3, 9]
temp = [[x for x in[data]] for x in range(3)]
print (temp)

[[[2, 3, 9]], [[2, 3, 9]]]

[[[2, 3, 9]], [[2, 3, 9]], [[2, 3, 9]]]

[[2, 3, 9], [2, 3, 9], [2, 3, 9]]

None of these

127 / 144

What is the output of the following Python Programs?

list1 = [1, 2, 3, 4, 5]
list2 = list1

list2[0] = 0;

print ("list1= : ", list1)

list1= : [0, 1, 2, 3, 4]

list1= : [0, 2, 3, 4, 5]

list1= : [1, 2, 3, 4, 5]

Compiler Error

128 / 144

What does a class's init() method do?

The __init__ method makes classes aware of each other if more than one class is defined in a single code file.

The__init__ method is included to preserve backwards compatibility from Python 3 to Python 2, but no longer needs to be used in Python 3.

The __init__ method is a constructor method that is called automatically whenever a new object is created from a class. It sets the initial state of a new object.`

The __init__ method initializes any imports you may have included at the top of your file.`

129 / 144

tuple1 = (1, 2, 4, 3)
tuple2 = (1, 2, 3, 4)
print(tuple1 < tuple2)

Error

False

True

Unexpected

130 / 144

What is the output of the following Python Programs?

class Acc:
  def __init__(self, id):
    self.id = id
    id = 555

acc = Acc(111)
print (acc.id)

111

Compiler Error

Garbage Value

None of these

131 / 144

Why would you use a virtual environment?

Virtual environments create a "bubble" around your project so that any libraries or packages you install within it don't affect your entire machine.

Teams with remote employees use virtual environments so they can share code, do code reviews, and collaorate remotely.

Virtual environments were common in Python 2 because they augmented missing features in the language. Virtual environments are not necessary in Python 3 due to advancements in the language.

Virtual environments are tied to your GitHub or Bitbucket account, allowing you to access any of your repos virtually from any machine.

132 / 144

What is the purpose of the pass statement in Python?

It is used to skip the yield statement of a generator and return a value of None.

It is a null operation used mainly as a placeholder in functions, classes, etc.

It is used to pass control from one statement block to another.

It is used to skip the rest of a while or for loop and return to the start of the loop.

133 / 144

What does the built-in map() function do?

It creates a path from multiple values in an iterable to a single value.

It applies a function to each item in an iterable and returns the value of that function.

It converts a complex value type into simpler value types.

It creates a mapping between two different elements of different iterables.

134 / 144

What is the output of the following Python Programs?

i = 1
while True:
  if i % 0O7 == 0:
    break
  print(i)
  i += 1

1 2 3 4 5

1 2 3 4 5 6

1 2 3 4 5 6 7

Error

135 / 144

When would you use a for loop ?

Only in some situations, as loops are used ony for certain type of programming.

When you need to check every element in an iterable of known length.

When you want to minimize the use of strings in your code.

When you want to run code in one file for a function in another file.

136 / 144

Which collection type is used to associate values with unique keys?

slot

dictionary

queue

sorted list

137 / 144

What statement about a class methods is true?

A class method is a regular function that belongs to a class, but it must return None.

A class method can modify the state of the class, but they can't directly modify the state of an instance that inherits from that class.

A class method is similar to a regular function, but a class method doesn't take any arguments.

A class method hold all of the data for a particular class.

138 / 144

What is the algorithmic paradigm of quick sort?

backtracking

dynamic programming

decrease and conquer

divide and conquer

139 / 144

What built-in Python data type is commonly used to represent a stack?

set

list

None. You can only build a stack from scratch.

dictionary

140 / 144

What is the output of the following Python Programs?

list = [1, 2, 3, None, (1, 2, 3, 4, 5), ['Aticleworld', 'test', 'Atic']]
print (len(list))

None of these

141 / 144

What is the correct syntax for creating a variable that is bound to a dictionary?

fruit_info = {'fruit': 'apple', 'count': 2, 'price': 3.5}

fruit_info =('fruit': 'apple', 'count': 2,'price': 3.5 ).dict()

fruit_info = ['fruit': 'apple', 'count': 2,'price': 3.5 ].dict()

fruit_info = to_dict('fruit': 'apple', 'count': 2, 'price': 3.5)

142 / 144

What is the output of the following Python Programs?

D = dict()
for x in enumerate(range(2)):
  D[x[0]] = x[1]
  D[x[1]+7] = x[0]
print(D)

{1: 1, 7: 2, 0: 1, 8: 1}

KeyError

{0: 0, 7: 0, 1: 1, 8: 1}

{0: 1, 7: 0, 1: 1, 8: 0}

143 / 144

D = {1 : [1, 2, 3], 2: (4, 6, 8)}
D[1].append(4)
print(D[1], end = " ")
L = [D[2]]
L.append(10)
D[2] = tuple(L)
print(D[2])

[1, 2, 3, 4] [4, 6, 8, 10]

[1, 2, 3, 4] ((4, 6, 8), 10)

‘[1, 2, 3, 4] TypeError: tuples are immutable

[1, 2, 3, 4] (4, 6, 8, 10)

144 / 144

Describe the functionality of a deque.

A deque adds items to one side and remove items from the other side.

A deque adds items to either or both sides, but only removes items from the top.

A deque adds items at either or both ends, and remove items at either or both ends.

A deque adds items only to the top, but remove from either or both sides.

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