input: def print_star_pattern() -> None:
      """
      Prints a pattern of stars following the given instructions:
      - For each i from 0 to 4, print i+1 stars in a row.
      - For each i from 5 to 1, print i stars in a row.
      >>> print_star_pattern()
      *
      **
      ***
      ****
      *****
      *****
      ****
      ***
      **
      *
      """
output:     for i in range(5):
          print('*' * (i + 1))
      for i in range(5, 0, -1):
          print('*' * i)