input: from typing import List
  
  def positive_feedback_loop(iterations: int) -> None:
      """ The function will loop for a given number of iterations, each time printing "hello".
      After the loop completes, a positive feedback message "You've got it!" is printed.
      >>> positive_feedback_loop(0)
      
      >>> positive_feedback_loop(3)
      hello
      hello
      hello
      You've got it!
      """
      for i in range(iterations):
          print("hello")
      if iterations > 0:
          print("You've got it!")
output:     for i in range(iterations):
          print("hello")
      if iterations > 0:
          print("You've got it!")