неподдерживаемый тип операнда (ов) для + =: «INT» и «NoneType»

Question

def moveWall (paddleWall, paddleWallDirY): 
    paddleWall.y+=paddleWallDirY 
    return paddleWall 

def main(): 
    pygame.init() 
    global DISPLAYSURF 
    ##Font information 
    global BASICFONT, BASICFONTSIZE 
    BASICFONTSIZE = 20 
    BASICFONT = pygame.font.Font('freesansbold.ttf', BASICFONTSIZE) 

    FPSCLOCK = pygame.time.Clock() 
    DISPLAYSURF = pygame.display.set_mode((WINDOWWIDTH,WINDOWHEIGHT)) 
    pygame.display.set_caption('Pong') 

    #Initiate variable and set starting positions 
    #any future changes made within rectangles 
    WallX = WINDOWWIDTH/2 - LINETHICKNESS/2 
    WallY = (WINDOWHEIGHT)/2 - LINETHICKNESS/2 
    ballX = WINDOWWIDTH/2 - LINETHICKNESS/2 
    ballY = WINDOWHEIGHT/2 - LINETHICKNESS/2 
    playerOnePosition = (WINDOWHEIGHT - PADDLESIZE) /2 
    playerTwoPosition = (WINDOWHEIGHT - PADDLESIZE) /2 
    score = 0 

    #Keeps track of ball direction 
    ballDirX = -1 ## -1 = left 1 = right 
    ballDirY = -1 ## -1 = up 1 = down 
    paddleWallDirX = 0 
    paddleWallDirY = 1 

    #Creates Rectangles for ball and paddles. 
    paddle1 = pygame.Rect(PADDLEOFFSET,playerOnePosition, LINETHICKNESS,PADDLESIZE) 
    paddle2 = pygame.Rect(WINDOWWIDTH - PADDLEOFFSET - LINETHICKNESS, playerTwoPosition, LINETHICKNESS,PADDLESIZE) 
    paddle3 = pygame.Rect(PADDLEOFFSET,playerOnePosition, LINETHICKNESS,PADDLESIZE) 
    paddleWall = pygame.Rect(WallX, WallY, LINETHICKNESS, 100) 
    ball = pygame.Rect(ballX, ballY, LINETHICKNESS, LINETHICKNESS) 

    #Draws the starting position of the Arena 
    drawArena() 
    drawPaddle(paddle1) 
    drawPaddle(paddle2) 
    drawPaddle(paddle3) 
    drawPaddle(paddleWall) 
    drawBall(ball) 

    pygame.mouse.set_visible(0) # make cursor invisible 

    while True: #main game loop 
     for event in pygame.event.get(): 
      if event.type == QUIT: 
       pygame.quit() 
       sys.exit() 
      # mouse movement commands 
      elif event.type == MOUSEMOTION: 
       mousex, mousey = event.pos 
       paddle1.y = mousey 
       paddle3.y = mousey - 100 

     drawArena() 
     drawPaddle(paddle1) 
     drawPaddle(paddle2) 
     drawPaddle(paddle3) 
     drawPaddle(paddleWall) 
     drawBall(ball) 

     paddleWall = moveWall(paddleWall, paddleWallDirY) 
     ball = moveBall(ball, ballDirX, ballDirY) 
     ballDirX, ballDirY = checkEdgeCollision(ball, ballDirX, ballDirY) 
     paddleWallDirY = checkEdgeCollisionWall(paddleWall, paddleWallDirY) 
     score = checkPointScored(paddle1, paddle3, ball, score, ballDirX) 
     ballDirX = ballDirX * checkHitBall(ball, paddle1, paddle2, paddle3, paddleWall, ballDirX) 
     paddle2 = artificialIntelligence (ball, ballDirX, paddle2) 

Я не могу это исправить, и я действительно давал paddleWallDirY значение 1, в основном методе

Answer 1

Ваш второй параметр ни прямо:

moveWall(pw, None) 

или косвенно:

x = None 
... 
moveWall(pw, x) 

Пожалуйста, обратите внимание, что значение None может быть результатом FUNC , например.