text: from typing import Tuple
  
  from utils import (multiply,
                     pythagorean_triplets)
  
  numbers_sum = 1_000
  
  
  def special_condition(numbers: Tuple[int, ...]) -> bool:
      return sum(numbers) == numbers_sum
  
  
  special_pythagorean_triplet, = filter(special_condition,
                                        pythagorean_triplets(numbers_sum))
  
  assert multiply(special_pythagorean_triplet) == 31_875_000
  