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Counter, defaultdict, deque and namedtuple

QuizEasy-MediumPython only

Which statements about the collections module are true? Pick all that apply.

  • Counter("banana").most_common(1) is [('a', 3)]
  • defaultdict(int) gives 0 for a missing key, so dd[ch] += 1 needs no check
  • deque removes from the front in O(1) with popleft()
  • A namedtuple can be changed after creation

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