LinkedIn Python Skill Assessment Answers [January 2024]

In this article, you will find frequently and most commonly asked questions in Linkedin Skill Assessment Python Quiz along with their right answers.

The LinkedIn Skill Assessments feature allows you to demonstrate your knowledge of the skills you have added on your profile. Job posters on Linkedin can also add Skill Assessments as part of the job application/recruitment process. This allows job posters to verify the crucial skills more efficiently and accurately a candidate should have for a role.

Linkedin Python Skill Assessment Test Details

LinkedIn Python Assessment Questions with Answers 2024

What is an abstract class?

• An abstract class is the name for any class from which you can instantiate an object.
• An abstract class exists only so that other “concrete” classes can inherit from the abstract class
• Abstract classes must be redefined any time an object is instantiated from them.
• Abstract classes must inherit from concrete classes.

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

• The any() function returns True if any item in the list evaluates to True. Otherwise, it returns False.
• The any() function will randomly return any item from the list.
• The any() function returns a Boolean value that answers the question “Are there any items in this list?”
• 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.

What are attributes?

• Attributes are strings that describe characteristics of a class.
• Attributes are a way to hold data or describe a state for a class or an instance of a class.
• Attributes are long-form version of an if/else statement, used when testing for equality between objects.
• Function arguments are called “attributes” in the context of class methods and instance methods.

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

• queue
• set
• linked list
• OrderedDict

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 can access and modify the state of 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.

What is the term to describe this code?

• tuple assignment
• tuple matching
• tuple unpacking
• tuple duplication

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

• .delete() method
• .pop() method
• pop(my_list)
• del(my_list)

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

• class Game: pass
• def Game(): pass
• def Game: pass
• class Game(): pass

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 take a snapshot of all the packages and libraries in your virtual environment
• to connect various systems, such as connecting a web front end, an API service, a database, and a mobile app
• to scan the health of your Python ecosystem while inside a virtual environment

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

• O(n), also called linear time.
• O(n^2), also called quadratic time.
• O(log n), also called logarithmic time.
• O(1), also called constant time.

What is the correct way to write a doctest?

• A
  def sum(a, b):
  “””
  sum(4, 3)
  7
  sum(-4, 5)
  1
  “””
  return a + b
• B
  def sum(a, b):
  “””
  >>> sum(4, 3)
  7
  >>> sum(-4, 5)
  1
  “””
  return a + b
• C
  def sum(a, b):
  “””
  # >>> sum(4, 3)
  # 7
  # >>> sum(-4, 5)
  # 1
  “””
  return a + b
• D
  def sum(a, b):
  ###
  >>> sum(4, 3)
  7
  >>> sum(-4, 5)
  1
  ###
  return a + b

How does defaultdict work? (Duplicate 1)

• defaultdict will automatically create a dictionary for you that has keys which are the integers 0-10.
• 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.
• defaultdict forces a dictionary to only accept keys that are of the types specified when you created the defaultdict (such as string or integers).

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

• set
• list
• dictionary
• None

What would this expression return?

• [(‘Freshman’, 2019), (‘Sophomore’, 2020), (‘Junior’, 2021), (‘Senior’, 2022)]
• [(2019, 2020, 2021, 2022), (‘Freshman’, ‘Sophomore’, ‘Junior’, ‘Senior’)]
• [(2019, ‘Freshman’), (2020, ‘Sophomore’), (2021, ‘Junior’), (2022, ‘Senior’)]
• [(‘Freshman’, ‘Sophomore’, ‘Junior’, ‘Senior’), (2019, 2020, 2021, 2022)]

How does defaultdict work? (Duplicate 2)

• 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 strings or integers).
• If you try to read from a defaultdict with a nonexistent key, a new default key-value pair will be created 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.

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

• class Game.LogicGame(): pass
• class Game(LogicGame): pass
• def Game(LogicGame): pass
• def Game.LogicGame(): pass

What is an instance method?

• An instance method is any class method that doesn’t take any arguments.
• 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 a regular function that belongs to a class, but it must return None.

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.
• self refers to the instance whose method was called.
• 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 class that was inherited from to create the object using self.

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.

Which choice is the most syntactically correct example of the conditional branching? (Duplicate 1)

• num_people = 5
  if num_people > 10:
  print(“There is a lot of people in the pool.”)
  elif num_people > 4;
  print(“There are some people in the pool.”)
  elif num_people > 0;
  print(“There are a few people in the pool.”)
  else:
  print(“There is no one in the pool.”)
• num_people = 5
  if num_people > 10:
  print(“There is a lot of people in the pool.”)
  elif num_people > 4:
  print(“There are some people in the pool.”)
  elif num_people > 0:
  print(“There are a few people in the pool.”)
  else:
  print(“There is no one in the pool.”)
• num_people = 5
  if num_people > 10:
  print(“There is a lot of people in the pool.”)
  if num_people > 4:
  print(“There are some people in the pool.”)
  if num_people > 0:
  print(“There are a few people in the pool.”)
  else:
  print(“There is no one in the pool.”)
• if num_people > 10;
  print(“There is a lot of people in the pool.”)
  if num_people > 4:
  print(“There are some people in the pool.”)
  if num_people > 0:
  print(“There are a few people in the pool.”)
  else:
  print(“There is no one in the pool.”)

Which choice is the most syntactically correct example of the conditional branching? (Duplicate 2)

• num_people = 5
  if num_people > 10:
  print(“There is a lot of people in the pool.”)
  elif num_people > 4:
  print(“There are some people in the pool.”)
  else:
  print(“There is no one in the pool.”)
• num_people = 5
  if num_people > 10;
  print(“There is a lot of people in the pool.”)
  elif num_people > 4;
  print(“There are some people in the pool.”)
  else;
  print(“There is no one in the pool.”)
• num_people = 5
  if num_people > 10:
  print(“There is a lot of people in the pool.”)
  if num_people > 4:
  print(“There are some people in the pool.”)
  else:
  print(“There is no one in the pool.”)
• if num_people > 10;
  print(“There is a lot of people in the pool.”)
  if num_people > 4;
  print(“There are some people in the pool.”)
  else;
  print(“There is no one in the pool.”)

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.

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

• It protects the data from outside interference.
• It keeps data and the methods that can manipulate that data in one place.
• A parent class is encapsulated and no data from the parent class passes on to the child class.
• It only allows the data to be changed by methods.

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

• my_game = class.Game()
• my_game = Game.create()
• my_game = class(Game)
• my_game = Game()

What is the purpose of an if/else statement?

• It tells the computer which chunk of code to run if the instructions you coded are incorrect.
• It executes one chunk of code if a condition is true, but a different chunk of code if the condition is false.
• It runs one chunk of code if all the imports were successful, and another chunk of code if the imports were not successful.
• It 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.

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

• set
• dictionary
• None
• list

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

• It creates a path from multiple values in an iterable to a single value.
• It converts a complex value type into simpler value types.
• It applies a function to each item in an iterable and returns the value of that function.
• It creates a mapping between two different elements of different iterables.

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.
• The function will enter an infinite loop because it won’t know when to stop executing its code.
• If the return keyword is absent, the function will return True.

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

• slot
• dictionary
• queue
• sorted list

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.

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

• arguments
• attributes
• paradigms
• decorators

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)

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 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.
• 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.

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

Given the following three list, how would you create a new list that matches the desired output printed below?

fruits = [‘Apples’, ‘Oranges’, ‘Bananas’]
quantities = [5, 3, 4]
prices = [1.50, 2.25, 0.89]

#Desired output
[(‘Apples’, 5, 1.50),
(‘Oranges’, 3, 2.25),
(‘Bananas’, 4, 0.89)]

• output = []
  fruit_tuple_0 = (first[0], quantities[0], price[0])
  output.append(fruit_tuple)
  fruit_tuple_1 = (first[1], quantities[1], price[1])
  output.append(fruit_tuple)
  fruit_tuple_2 = (first[2], quantities[2], price[2])
  output.append(fruit_tuple)
  return output
• i = 0
  output = []
  for fruit in fruits:
  temp_qty = quantities[i]
  temp_price = prices[i]
  output.append((fruit, temp_qty, temp_price))
  i += 1
  return output
• i = 0
  output = []
  for fruit in fruits:
  for qty in quantities:
  for price in prices:
  output.append((fruit, qty, price))
  i += 1
  return output
• groceries = zip(fruits, quantities, prices)
  return groceries
  >>> [
  (‘Apples’, 5, 1.50),
  (‘Oranges’, 3, 2.25),
  (‘Bananas’, 4, 0.89)
  ]

What is the correct syntax for calling an instance method on a class named Game? (Duplicate 1)

• >>> dice = Game()
  >>> dice.roll()
• >>> dice = Game()
  >>> dice.roll(self)
• >>> dice = Game(self)
  >>> dice.roll()
• >>> dice = Game(self)
  >>> dice.roll(self)

What is the correct syntax for calling an instance method on a class named Game? (Duplicate 2)

• my_game = Game()
  my_game.roll_dice()
• my_game = Game(self)
  self.my_game.roll_dice()
• my_game = Game()
  self.my_game.roll_dice()
• my_game = Game(self)
  my_game.roll_dice(self)

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

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.

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.
• A set is an ordered collection of non-unique items. A list is an unordered collection of unique items.
• Elements can be retrieved from a list but they cannot be retrieved from a set.
• A set is an unordered collection unique items. A list is an ordered collection of non-unique items.

What does this function print? 

def print_alpha_nums(abc_list, num_list):
for char in abc_list:
for num in num_list:
print(char, num)
return
print_alpha_nums([‘a’, ‘b’, ‘c’], [1, 2, 3])

• a 1
  a 2
  a 3
  b 1
  b 2
  b 3
  c 1
  c 2
  c 3
• a 1 2 3
  b 1 2 3
  c 1 2 3
• [‘a’, ‘b’, ‘c’], [1, 2, 3]
• aaa
  bbb
  ccc
  111
  222
  333

Correct representation of doctest for function in Python

• def sum(a, b):
  “””
  a = 1
  b = 2
  sum(a, b) = 3
  “””
  return a + b
• def sum(a, b):
  # a = 1
  # b = 2
  # sum(a, b) = 3
  return a + b
• def sum(a, b):
  “””
  >>> a = 1
  >>> b = 2
  >>> sum(a, b)
  3
  “””
  return a + b
• def sum(a, b):
  ”’
  a = 1
  b = 2
  sum(a, b) = 3
  ”’
  return a + b

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 programmer must specify which parent class to inherit methods from.
• When instantiating an object, the object will inherit the methods of whichever parent class has more methods.
• An instance of the Game class will inherit whatever methods the BoardGame and LogicGame classes have.

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

• &&
• ==
• =
• ||

What does calling namedtuple on a collection type return?

• a generic object class with iterable parameter fields
• a tuple subclass with non-iterable parameter fields
• a generic object class with non-iterable named fields
• a tuple subclass with iterable named fields

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

What value would be returned by this check for equality?

5 != 6

• yes
• False
• True
• None

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.

What is meant by the phrase “space complexity”?

• How many microprocessors it would take to run your code in less than one second
• The amount of space taken up in memory as a function of the input size
• How many lines of code are in your code file
• How many copies of the code file could fit in 1 GB of memory

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)

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()

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