Python filter() Function

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Questions and Answers

What is the primary purpose of the filter() function in Python?

  • To apply a filter function to an iterable and return a list
  • To convert an iterable to a tuple
  • To apply a filter function to an iterable and return an iterator (correct)
  • To sort an iterable in ascending order

What data structure is used to store mappings between keys and values in Python?

  • Tuple
  • Dictionary (correct)
  • Set
  • List

What is the result of calling my_dict'a' in the given example?

  • 2
  • 16
  • 4 (correct)
  • 8

What is the purpose of the list() function in the context of iterators?

<p>To convert an iterator to a list (B)</p> Signup and view all the answers

What is the benefit of using functions as values in a dictionary?

<p>It enables the application of different functions to different values based on their keys (B)</p> Signup and view all the answers

What is the return type of the filter() function in Python?

<p>Iterator (C)</p> Signup and view all the answers

What is the syntax to apply the function square to the value 2 in the given example?

<p>my_dict<a href="2">'a'</a> (D)</p> Signup and view all the answers

What is the output of the print statement print(my_dict'b') in the given example?

<p>8 (C)</p> Signup and view all the answers

What is the advantage of using the filter() function in Python?

<p>It enables the selection of specific elements from a large data set (C)</p> Signup and view all the answers

What is the purpose of the iterator in the context of the filter() function?

<p>To iterate over the filtered elements (A)</p> Signup and view all the answers

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