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

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Answer:

The filter() function in Python is used to filter a sequence (list, tuple, etc.) by applying a test function to each element of the sequence. The test function should return a boolean value, indicating whether or not the element should be included in the filtered sequence. The filtered sequence is returned as a new sequence (a filter object) containing only the elements for which the test function returned True.

Syntax: filter(function, iterable)

where,

  • function is the test function to be applied to each element of the iterable
  • iterable is the sequence to be filtered (list, tuple, etc.)

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