Python Dictionaries Quiz: Python Dictionaries Multiple Choice Questions

Python Dictionaries Quiz with answers and explanations for placement tests and job interviews. This solved Python Dictionaries Quiz is 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 Dictionaries Quiz:

This Python Dictionaries Quiz is intended for checking your Python knowledge. It takes 40 minutes to pass the Python Data Types Quiz. If you don’t finish the Python Dictionaries Quiz 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 Data Types has features of randomization which feel you a new question set at every attempt.

In this Python Dictionaries Quiz, 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 Dictionaries Quiz.

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Python Dictionaries Quiz

Python Dictionaries Quiz: Python Dictionaries Multiple Choice Questions and Answers

1 / 32

What is the output of the following Python Programs?

temp = dict() 
temp['key1'] = {'key1' : 44, 'key2' : 566} 
temp['key2'] = [1, 2, 3, 4] 
for (key, values) in temp.items(): 
    print(values, end = "")

{'key1': 44, 'key2': 566}[1, 2, 3, 4]

Runtime error

Error

None of these

2 / 32

What is the output of the following Python Programs?

a ={} 
a['a']= 1
a['b']=[2, 3, 4] 
print(a)

{‘b’: [2], ‘a’: 1}

{'a': 1, 'b': [2, 3, 4]}

{‘b’: [2], ‘a’: [3]}

Error

3 / 32

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

4 / 32

Dictionary keys must be immutable

True

False

5 / 32

Consider this nested structure definition:

x = [
    'a',
    'b',
    {
        'foo': 1,
        'bar':
        {
            'x' : 10,
            'y' : 20,
            'z' : 30
        },
        'baz': 3
    },
    'c',
    'd'
]

Is the following statement True or False?

'z' in x[2]

True

False

6 / 32

Here is the same dictionary as in the previous question:

What statement will remove the entry in the dictionary for key 'baz'?

7 / 32

What is the output of the following Python Programs?

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] (4, 6, 8, 10)

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

8 / 32

You have the following dictionary definition:

d = {'foo': 100, 'bar': 200, 'baz': 300}

What method call will delete the entry whose value is 200?

9 / 32

What is the output of the following Python Programs?

test = {1:'A', 2:'B', 3:'C'} 
del test[1] 
test[1] = 'D'
del test[2] 
print(len(test))

Error

10 / 32

What is the output of the following Python Programs?

dict ={} 
print (all(dict))

An exception is thrown

False

True

{ }

11 / 32

Which of the following are true of Python dictionaries:

All the keys in a dictionary must be of the same type.

Dictionaries can be nested to any depth.

Dictionaries are accessed by key.

Items are accessed by their position in a dictionary.

A dictionary can contain any object type except another dictionary.

Dictionaries are mutable.

12 / 32

What is the output of the following Python Programs?

dict1 = {"key1":1, "key2":2}
dict2 = {"key2":2, "key1":1}
print(dict1 == dict2)

True

False

13 / 32

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('India') 
addToCounter('Atic') 
 
print (len(counter))

14 / 32

Consider this dictionary:

d = {'foo': 100, 'bar': 200, 'baz': 300}

What is the result of this statement:

d['bar':'baz']

It raises an exception

[200, 300]

200 300

(200, 300)

15 / 32

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]])

C B

B D

E Key Error

D B

16 / 32

Select the correct way to print Emma’s age.

student = {1: {'name': 'Emma', 'age': '27', 'sex': 'Female'},
           2: {'name': 'Mike', 'age': '22', 'sex': 'Male'}}

student[0][1]

student[0][“age”]

student[1][“age”]

None of these

17 / 32

What is the output of the following Python Programs?

a = {i: i * i for i in range(6)} 
print (a)

{0: 0, 1: 1, 4: 4, 9: 9, 16: 16, 25: 25}

Dictionary comprehension doesn’t exist

{0: 0, 1: 1, 2: 4, 3: 9, 4: 16, 5: 25, 6:36}

{0: 0, 1: 1, 2: 4, 3: 9, 4: 16, 5: 25}

18 / 32

What is the output of the following Python Programs?

dictionary ={1:"Atic", 2:"Love", 3:"World"} 
del dictionary

del deletes the entire dictionary

del doesn’t exist for the dictionary

del deletes the keys in the dictionary

del deletes the values in the dictionary

19 / 32

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)

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

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

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

None of these

20 / 32

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}

None of these

21 / 32

What is the output of the following Python Programs?

a = {'Aticleworld' : 1, 'Atic' : 2} 
b = {'Aticleworld' : 2, 'Atic' : 1} 
print (a == b)

True

False

Error

None

22 / 32

Find the output of the following program: Which of these about a dictionary is false?

The values of a dictionary can be accessed using keys

The keys of a dictionary can be accessed using values

Dictionaries may or may not be ordered

None of these

23 / 32

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) )

24 / 32

What is the output of the following Python Programs?

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

Microsoft 3 Atic 1 Aticleworld 1 Google 2

Microsoft 3 Atic 1 Aticleworld 1 Google 2 Youtube 3 Facebook 2

Aticleworld 1 Google 2 Youtube 3 Facebook 2

None of these

25 / 32

Which of the following could be a valid dictionary key:

['foo', 'bar']

(3+2j)

'foo'

dict(foo=1, bar=2)

len

('foo', 'bar')

26 / 32

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

None of these

27 / 32

Shown below is a diagram of a simple dictionary:

Which of the following is not a valid way to define this dictionary in Python:

1.

d = {'foo': 100, 'bar': 200, 'baz': 300}

2.

d = {}
d['foo'] = 100
d['bar'] = 200
d['baz'] = 300

3.

d = {
    ('foo', 100),
    ('bar', 200),
    ('baz', 300)
}

4.

d = dict(foo=100, bar=200, baz=300)

5.

d = dict([
    ('foo', 100),
    ('bar', 200),
    ('baz', 300)
])

28 / 32

Suppose x is defined as follows:

x = [
    'a',
    'b',
    {
        'foo': 1,
        'bar':
        {
            'x' : 10,
            'y' : 20,
            'z' : 30
        },
        'baz': 3
    },
    'c',
    'd'
]

What is the expression involving x that accesses the value 30?

x[2]["foo"]["z"]

x[2]["baz"]["z"]

x[2]["bar"]["z"]

x[foo]["bar"]["z"]

29 / 32

What is the output of the following Python Programs?

dictionary = {'Atic' : 1, 
            'Aticleworld' : 2, 
            'Atic' : 3
            } 
print(dictionary['Atic']);

Runtime time error due to duplicate keys

Error due to duplicate keys

30 / 32

In Python, Dictionaries are immutable.

True

False

31 / 32

Suppose you have a dictionary d1. Which of the following effectively creates a variable d2 which contains a copy of d1:

d2 = dict(d1.items())

d2 = {} d2.update(d1)

d2 = dict(d1.keys())

d2 = dict(d1.values())

d2 = d1

d2 = dict(d1)

32 / 32

What is the output of the following Python Programs?

a ={} 
a.fromkeys(['a', 'b', 'c', 'd'], 98) 
print (a)

{‘a’:98, ‘b’:98, ‘c’:98, ‘d’:98}

Syntax error

{‘a’:None, ‘b’:None, ‘c’:None.’d’:None}

{ }

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Python Dictionaries Quiz: Python Dictionaries Multiple Choice Questions

Guideline of Python Dictionaries Quiz:

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