text: def get_number(num):
      """Return the number one less than the given positive number. 
      If the number is nonpositive, return a string "Enter a positive number!".
  
      Arguments:
      num -- an integer.
      Return values:
      An integer one less than the input number.
      """
  
      return "Enter a positive number!" if num < 1 else num - 1
  