key press event listeners are not cleared after running code, will trigger multiple times if you run code multiple times

[nvarughese]

When you run the code a second or third time key press events will trigger a second or third time.

To see the bug go to the example https://petlja.github.io/pygame4skulpt/

Run the snake printing to show a keypress, the second time you run snake, you will see multiple prints for each key press

if e.type == pg.KEYDOWN:
if game_running == 0:
game_runnig = 1
if e.key == pg.K_SPACE:
game_running = 0
snake = [(7, 3), (7, 4)]
direction = 0
apple = place_apple()
for i in range(4):
if e.key == dirs[i] and direction != (i + 2) % 4:
direction = i
print direction