MCQs for Python Dictionaries: Exam-Style Practice

1

Which of the following data types in Python is used to store key-value pairs?

A) Dictionary B) List C) Tuple D) Set

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Answer & Solution

Answer: Option A

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2

What method is used to check if a key exists in a dictionary, and if not, add it with a default value?

A) setdefault() B) addkey() C) insert() D) newkey()

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Answer & Solution

Answer: Option A

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3

What does the len() function do when applied to a dictionary?

A) Returns the number of key-value pairs in the dictionary B) Returns the sum of all values C) Returns the length of the longest key D) Returns the length of the longest value

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Answer & Solution

Answer: Option A

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4

In Python, how can you get a list of all key-value pairs in a dictionary?

A) items() B) get_items() C) all_items() D) list_items()

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Answer & Solution

Answer: Option A

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5

What is the purpose of the dict() constructor in Python?

A) Creates a new dictionary B) Converts a list to a dictionary C) Converts a tuple to a dictionary D) Converts a string to a dictionary

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Answer & Solution

Answer: Option A

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6

Which method is used to remove a key-value pair from a dictionary?

A) pop() B) remove() C) delete() D) discard()

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Answer & Solution

Answer: Option A

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7

In Python, how can you check if a key exists in a dictionary?

A) in keyword B) exists() C) contains() D) check()

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Answer & Solution

Answer: Option A

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8

What method is used to update the values of a dictionary with the values from another dictionary?

A) update() B) set() C) add() D) merge()

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Answer & Solution

Answer: Option A

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9

What is the purpose of the keys() method for dictionaries?

A) Returns a list of all keys in the dictionary B) Returns a list of all values in the dictionary C) Returns a list of all items in the dictionary D) Returns a list of all keys and values in the dictionary

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Answer & Solution

Answer: Option A

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10

Which method is used to get a list of all values in a dictionary?

A) values() B) get_values() C) all_values() D) list_values()

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Answer & Solution

Answer: Option A

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