input: 
  from typing import List
  
  def get_close_elements(numbers: List[float], threshold: float) -> List[float]:
      """ Find and return a list of numbers from the given list that have at least one other number closer to them than the given threshold.
      >>> get_close_elements([1.0, 2.0, 3.0], 0.5)
      []
      >>> get_close_elements([1.0, 2.8, 3.0, 4.0, 5.0, 2.0], 0.3)
      [2.8, 2.0]
      """
  
output:     result = []
      for i in range(len(numbers)):
          for j in range(len(numbers)):
              if i != j and abs(numbers[i] - numbers[j]) <= threshold:
                  result.append(numbers[i])
                  break
      return result