import time
import pyatspi

VK_CODE = {'left_arrow':113,
           'right_arrow':114,
           'spacebar':65 }

def press(x):
    pyatspi.Registry.generateKeyboardEvent(VK_CODE[x], None,
                                          pyatspi.KEY_PRESSRELEASE)

def play():
        time.sleep(1)
        s = time.time()
        while time.time() - s < 15:
                press("left_arrow")
                press("right_arrow")
                press("left_arrow")
                press("right_arrow")
# faster without this
#               press('spacebar')

play()