Python Lists MCQs: Exam Practice for List Concepts

31

What will be the output of the following Python code snippet?

x = [i**+1 for i in range(3)]; print(x);

A) [0, 1, 2] B) [1, 2, 5] C) error, **+ is not a valid operator D) error, ';' is not allowed

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Answer & Solution

Answer: Option A

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32

What will be the output of the following Python code?

print(list(zip((1,2,3),('a'),('xxx','yyy'))))
print(list(zip((2,4),('b','c'),('yy','xx'))))

A) [(1,2,3),(‘a’),(‘xxx’,’yyy’)]
[(2,4),(‘b’,’c’),(‘yy’,’xx’)] B) [(1, 'a', 'xxx'),(2,’ ‘,’yyy’),(3,’ ‘,’ ‘)]
[(2, 'b', 'yy'), (4, 'c', 'xx')] C) Syntax error D) [(1, 'a', 'xxx')]
[(2, 'b', 'yy'), (4, 'c', 'xx')]

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Answer & Solution

Answer: Option D

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33

What will be the output of the following Python code snippet?

A) prints all the vowels in my_string B) prints all the consonants in my_string C) prints all characters of my_string that aren't vowels D) prints only on executing print(k)

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Answer & Solution

Answer: Option C

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34

What will be the output of the following Python code?

l1=[10, 20, 30]
l2=[-10, -20, -30]
l3=[x+y for x, y in zip(l1, l2)]
print(l3)

A) Error B) 0 C) [-20, -60, -80] D) [0, 0, 0]

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Answer & Solution

Answer: Option D

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35

Suppose list1 is [1, 3, 2], What is list1 * 2?

A) [2, 6, 4] B) [1, 3, 2, 1, 3] C) [1, 3, 2, 1, 3, 2] D) [1, 3, 2, 3, 2, 1]

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Answer & Solution

Answer: Option C

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36

What will be the output of the following Python code?

def example(L):
    ''' (list) -> list
    '''
    i = 0
    result = []
    while i < len(L):
        result.append(L[i])
        i = i + 3
    return result

A) Return a list containing every third item from L starting at index 0 B) Return an empty list C) Return a list containing every third index from L starting at index 0 D) Return a list containing the items from L starting from index 0, omitting every third item

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Answer & Solution

Answer: Option A

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37

What will be the output of the following Python code?

a=[1,2,3]
b=a.append(4)
print(a)
print(b)

A) [1,2,3,4]
[1,2,3,4] B) [1, 2, 3, 4]
None C) Syntax error D) [1,2,3]
[1,2,3,4]

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Answer & Solution

Answer: Option B

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38

What will be the output of the following Python code snippet?

print([i+j for i in "abc" for j in "def"])

A) ['da', 'ea', 'fa', 'db', 'eb', 'fb', 'dc', 'ec', 'fc'] B) [['ad', 'bd', 'cd'], ['ae', 'be', 'ce'], ['af', 'bf', 'cf']] C) [['da', 'db', 'dc'], ['ea', 'eb', 'ec'], ['fa', 'fb', 'fc']] D) ['ad', 'ae', 'af', 'bd', 'be', 'bf', 'cd', 'ce', 'cf']

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Answer & Solution

Answer: Option D

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39

What will be the output of the following Python code?

>>>names = ['Amir', 'Bear', 'Charlton', 'Daman']
>>>print(names[-1][-1])

A) A B) Daman C) Error D) n

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Answer & Solution

Answer: Option D

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40

To add a new element to a list we use which command?

A) list1.add(5) B) list1.append(5) C) list1.addLast(5) D) list1.addEnd(5)

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Answer & Solution

Answer: Option B

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