Python OrderedDict

This quiz is about Python OrderedDict

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Question 1

What is an OrderedDict in Python?


  • A dictionary that preserves the order of keys

  • A dictionary that stores data in random order

  • A list that behaves like a dictionary

  • A set that stores unique elements in order

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Question 2

What is a key feature of OrderedDict that differentiates it from a standard dict in terms of equality checks?

  • It ignores the order of keys during comparison

  • It only compares values for equality

  • It considers both the keys and their order for equality

  • It requires keys to be unique for comparison

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Question 3

What method would you use to move a specific key to the end of an OrderedDict?

  • shift_to_end(key)

  • move_to_end(key)

  • push(key)

  • push_to_back(key)

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Question 4

Which of the following statements is true regarding the performance of OrderedDict compared to standard dict?

  • OrderedDict is faster for all operations

  • OrderedDict is slower due to its underlying implementation

  • Both have the same performance characteristics

  • OrderedDict is faster only for key retrieval

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Question 5

When using popitem() on an OrderedDict, what does the parameter last=True indicate?

  • It removes the first item in the OrderedDict

  • It removes the last item in the OrderedDict

  • It removes a random item from the OrderedDict

  • It removes the oldest item based on insertion time

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Question 6

Which module in Python provides the OrderedDict class?

  • collections

  • dict

  • order

  • ordered_dict

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Question 7

How can you create an OrderedDict from an existing dictionary in Python?

  • OrderedDict(dict)

  • dict.OrderedDict()

  • dict.toOrdered()

  • OrderedDict.from_dict(dict)

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Question 8

What is the primary data structure used by OrderedDict to maintain the order of keys?

  • Array

  • Hash table

  • Doubly linked list

  • Stack

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Question 9

What happens when you assign a new value to an existing key in an OrderedDict?

  • The order of the key is preserved, and its value is updated

  • The key is moved to the end

  • The key is removed and re-inserted at the end

  • The order of keys is reset

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Question 10

What will the following code output?


from collections import OrderedDict

d = OrderedDict([('a', 1), ('b', 2), ('c', 3)])

d.move_to_end('b', last=False)

for key, value in d.items():

print(key, value)

  • b 2, a 1, c 3


  • a 1, c 3, b 2

  • a 1, b 2, c 3

  • c 3, b 2, a 1

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