input: def return_multiple_values():
      """
      Demonstrate multiple ways to return two values from a Python function.
      One way is to use a tuple, and another is to directly return multiple values.
      
      >>> result1, result2 = return_multiple_values()
      >>> print(result1, result2)
      ('ABC', 123)
      """
      value1 = "ABC"
      value2 = 123
      return value1, value2
output:     value1 = "ABC"
      value2 = 123
      return (value1, value2)