python编译时的错误：

Question

、这是网上的游戏：兔子和獾下面这一段出上面的结果，不知道怎么回事有时候可执行，上次把# 6 - draw the screen elementsscreen.blit(player, (100,100))和下面隔开执行成功了一次，求解。# 1 - Import library import pygame from pygame.locals import *   # 2 - Initialize the game pygame.init() width, height = 640, 480 screen=pygame.display.set_mode((width, height))   # 3 - Load images player = pygame.image.load("resources/images/dude.png") grass = pygame.image.load("resources/images/grass.png") castle = pygame.image.load("resources/images/castle.png")   # 4 - keep looping through while 1:     # 5 - clear the screen before drawing it again screen.fill(0)      # 6 - draw the screen elements screen.blit(player, (100,100)) for x in range(width\grass.get_width()+1):         for y in range(height\grass.get_height()+1):             screen.blit(grass,(x*100,y*100)) screen.blit(castle,(0,30)) screen.blit(castle,(0,135)) screen.blit(castle,(0,240)) screen.blit(castle,(0,345 ))     # 7 - update the screen     pygame.display.flip()     # 8 - loop through the events     for event in pygame.event.get():         # check if the event is the X button          if event.type==pygame.QUIT:             # if it is quit the game             pygame.quit()              exit(0)

Answer 1

中文冒号?