parameters: (x, y)
docstring: Change pacman aim if valid.
docstring_summary: Change pacman aim if valid.
docstring_tokens: Change pacman aim if valid .
function: def change(x, y):
      "Change pacman aim if valid."
      if valid(pacman + vector(x, y)):
          aim.x = x
          aim.y = y
function_tokens: def change ( x , y ) : if valid ( pacman + vector ( x , y ) ) : aim . x = x aim . y = y