input: from typing import List
  
  
  def swap_values(variables: List[int]) -> List[int]:
      """Swap the values of the two variables in the list.
      >>> swap_values([5, 10])
      [10, 5]
      """
      if len(variables) == 2:
          variables[0], variables[1] = variables[1], variables[0]
      return variables
output:     if len(variables) == 2:
          variables[0], variables[1] = variables[1], variables[0]
      return variables