“pygame.error: display Surface quit” while loading

Question

So I'm making a game to test my programming skills and I'm trying to use pygame but when i try and load a level map it says the surface has quit. I have no idea why.

This is the load code:

def load(self):
    print(os.listdir())
    file = input('>>> file name = ')
    try:
        self.Dir = os.getcwd()
        path = os.path.join(self.Dir, "maps", file)
        data = pickle.load(open(path, 'rb'))
    except OSError as error:
        print('Not file ', path)
        print(error)
    else:
        self.grid   = data[0]
        self.blocks = data[1]

Thanks in advance

EDIT: this is the trace back

  Traceback (most recent call last):
  File "F:\PROGRAMS\snow\mapmaker_v2.py", line 169, in <module>
    a.loop()
  File "F:\PROGRAMS\snow\senpy.py", line 95, in loop
    self.blocks.draw(self.screen)
  File "F:\BMDSIT\Portable Python 3.2.5.1\App\lib\site-packages\pygame\sprite.py", line 475, in draw
    self.spritedict[spr] = surface_blit(spr.image, spr.rect)
pygame.error: display Surface quit

EDIT 2: This is the loop code where it happens:

(The load command is in the self.keyboard() function.)

def loop(self):
    print('looping')
    for event in pygame.event.get():               
        if event.type == pygame.QUIT:
            print('quiting :(')
            pygame.display.quit()
            quit('User quit')

    self.screen.fill((237, 237, 237))

    self.keys = pygame.key.get_pressed()
    self.mos = pygame.mouse.get_pressed()

    self.mouse()
    self.keyboard()

    #screen.blit(player,player.pos)
    self.blocks.draw(self.screen)

    self.extraLoop()

    pygame.display.flip()
    print('done looping')

Answer 1

You can't pickle a Surface object.

If you want to pickle an object that contains a Surface , remove it before saving it to disk; and store the name of the image file or a string representation of the Surface instead in the object.