This set of Python Multiple Choice Questions & Answers (MCQs) focuses on “Lists”.
1. Suppose list1 is [3, 4, 5, 20, 5, 25, 1, 3], what is list1 after list1.reverse()?
a) [3, 4, 5, 20, 5, 25, 1, 3]
b) [1, 3, 3, 4, 5, 5, 20, 25]
c) [25, 20, 5, 5, 4, 3, 3, 1]
d) [3, 1, 25, 5, 20, 5, 4, 3]
View Answer
Explanation: Execute in the shell to verify.
2. Suppose listExample is [3, 4, 5, 20, 5, 25, 1, 3], what is list1 after listExample.extend([34, 5])?
a) [3, 4, 5, 20, 5, 25, 1, 3, 34, 5]
b) [1, 3, 3, 4, 5, 5, 20, 25, 34, 5]
c) [25, 20, 5, 5, 4, 3, 3, 1, 34, 5]
d) [1, 3, 4, 5, 20, 5, 25, 3, 34, 5]
View Answer
Explanation: Execute in the shell to verify.
3. Suppose listExample is [3, 4, 5, 20, 5, 25, 1, 3], what is list1 after listExample.pop(1)?
a) [3, 4, 5, 20, 5, 25, 1, 3]
b) [1, 3, 3, 4, 5, 5, 20, 25]
c) [3, 5, 20, 5, 25, 1, 3]
d) [1, 3, 4, 5, 20, 5, 25]
View Answer
Explanation: pop() removes the element at the position specified in the parameter.
4. Suppose listExample is [3, 4, 5, 20, 5, 25, 1, 3], what is list1 after listExample.pop()?
a) [3, 4, 5, 20, 5, 25, 1]
b) [1, 3, 3, 4, 5, 5, 20, 25]
c) [3, 5, 20, 5, 25, 1, 3]
d) [1, 3, 4, 5, 20, 5, 25]
View Answer
Explanation: pop() by default will remove the last element.
5. What will be the output of the following Python code?
>>>"Welcome to Python".split()
a) [“Welcome”, “to”, “Python”]
b) (“Welcome”, “to”, “Python”)
c) {“Welcome”, “to”, “Python”}
d) “Welcome”, “to”, “Python”
View Answer
Explanation: split() function returns the elements in a list.
6. What will be the output of the following Python code?
>>>list("a#b#c#d".split('#'))
a) [‘a’, ‘b’, ‘c’, ‘d’]
b) [‘a b c d’]
c) [‘a#b#c#d’]
d) [‘abcd’]
View Answer
Explanation: Execute in the shell to verify.
7. What will be the output of the following Python code?
myList = [1, 5, 5, 5, 5, 1] max = myList[0] indexOfMax = 0 for i in range(1, len(myList)): if myList[i] > max: max = myList[i] indexOfMax = i >>>print(indexOfMax)
a) 1
b) 2
c) 3
d) 4
View Answer
Explanation: First time the highest number is encountered is at index 1.
8. What will be the output of the following Python code?
myList = [1, 2, 3, 4, 5, 6] for i in range(1, 6): myList[i - 1] = myList[i] for i in range(0, 6): print(myList[i], end = " ")
a) 2 3 4 5 6 1
b) 6 1 2 3 4 5
c) 2 3 4 5 6 6
d) 1 1 2 3 4 5
View Answer
Explanation: The code shifts all elements of a list by one position towards the beginning, except the first element which is replaced by the second. The last element is duplicated since there is no next element to assign its value to. The output is “2 3 4 5 6 6”.
9. What will be the output of the following Python code?
>>>list1 = [1, 3] >>>list2 = list1 >>>list1[0] = 4 >>>print(list2)
a) [1, 3]
b) [4, 3]
c) [1, 4]
d) [1, 3, 4]
View Answer
Explanation: Lists should be copied by executing [:] operation.
10. What will be the output of the following Python code?
def f(values): values[0] = 44 v = [1, 2, 3] f(v) print(v)
a) [1, 44]
b) [1, 2, 3, 44]
c) [44, 2, 3]
d) [1, 2, 3]
View Answer
Explanation: Execute in the shell to verify.
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