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Python · Q30

MCQs for Python Dictionaries: Exam

Programming · Python · question 30

Q30

What is the output of the following code:my_dict = 'a': 1, 'b': 2my_dict.popitem()print(my_dict)

A.
{'a': 1, 'b': 2}
B.
{}
C.
{'b': 2}
Answer
D.
{1: 'a', 2: 'b'}

Answer: Option C

Solution

Answer: Option C
Solution:
Code Analysis:

my_dict = {'a': 1, 'b': 2}

1. popitem() Method: The popitem() method removes and returns the last inserted key-value pair. In this case, the last inserted pair is 'b': 2.

2. Updated Dictionary: After removing 'b': 2, the dictionary will contain only 'a': 1.

print(my_dict)

Output: The dictionary now contains {'a': 1}.

Incorrect Options:

A) {'a': 1, 'b': 2}: This would be the original dictionary, but popitem() modifies it.

B) {}: This would be true if both key-value pairs were removed, but only one is removed.

D) {1: 'a', 2: 'b'}: This is incorrect as keys and values are not swapped.

Thus, the correct answer is Option C: {'a': 1}.