Python Dictionary MCQs with answers Page - 2

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Q. Which of the following will raise a TypeError?

  • (A) my_dict = {[1, 2]: 'value'}
  • (B) my_dict = {1: 'value'}
  • (C) my_dict = {True: 'yes'}
  • (D) my_dict = {(1, 2): 'tuple'}

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Q. What does `dict1 == dict2` check?

  • (A) Memory location
  • (B) If they are the same object
  • (C) If both have the same keys and values
  • (D) Always False

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Q. What will `dict([(1, 'a'), (2, 'b')])` return?

  • (A) {1: 'a', 2: 'b'}
  • (B) [(1, 'a'), (2, 'b')]
  • (C) {(1, 'a'), (2, 'b')}
  • (D) Syntax Error

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Q. Can dictionary values be duplicated?

  • (A) Yes
  • (B) No
  • (C) Only strings
  • (D) Only numbers

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Q. What does `dict.keys()` return?

  • (A) A list of keys
  • (B) A view object of keys
  • (C) A list of values
  • (D) A tuple of keys

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Q. Which of these can be used to loop through a dictionary?

  • (A) `for i in dict`
  • (B) `for i in dict.items()`
  • (C) `for i in dict.keys()`
  • (D) All of the above

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Q. Which data type is returned by `dict.items()`?

  • (A) List
  • (B) Tuple
  • (C) View
  • (D) Set

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Q. What is the output of `dict(zip(['a', 'b'], [1, 2]))`?

  • (A) {'a': 1, 'b': 2}
  • (B) [('a', 1), ('b', 2)]
  • (C) {1: 'a', 2: 'b'}
  • (D) Error

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Q. What happens if you delete a key that doesn't exist using `del`?

  • (A) Returns False
  • (B) Returns None
  • (C) Does nothing
  • (D) Raises KeyError

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Q. What is a dictionary in Python?

  • (A) An ordered collection of elements
  • (B) An unordered collection of key-value pairs
  • (C) A mutable list of strings
  • (D) A sequence of characters

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