input: from typing import List
  
  def find_even_numbers_with_comprehension(n: int) -> List[int]:
      """ Rewrite the for loop to find even numbers within a range using list comprehension.
      >>> find_even_numbers_with_comprehension(21)
      [2, 4, 6, 8, 10, 12, 14, 16, 18, 20]
      """
output:     return [i for i in range(1, n) if i % 2 == 0]