input: from typing import List
  
  def to_int_list(s: str) -> List[int]:
      """Convert a given string, where numbers are separated by commas, to a list of integers.
      >>> to_int_list("1,2,3,4")
      [1, 2, 3, 4]
      >>> to_int_list("5,0,7,8,9")
      [5, 0, 7, 8, 9]
      """
output:     return [int(num) for num in s.split(',')]