input: from typing import List, Union
  
  def print_string_length(s: str) -> None:
      """
      Print the length of a given string.
      >>> print_string_length("Python")
      Length of the given string is: 6
      >>> print_string_length("Hello, world!")
      Length of the given string is: 13
      """
output:     print(f"Length of the given string is: {len(s)}")