关于python 2.7：使用Eclipse的PyGame中出现异常语法错误

Unusual Syntax Error in PyGame using Eclipse

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import pygame
import time
import random
from __builtin__ import quit

pygame.init()

display_width = 800
display_height = 600

black = (0,0,0)
white = (255,255,255)

red = (200,0,0)
green = (0,200,0)

bright_red = (255,0,0)
bright_green = (0,255,0)

ship_width = 73

gameDisplay = pygame.display.set_mode((display_width,display_height))
pygame.display.set_caption('Galaxia Remastered')
clock = pygame.time.Clock()

background = pygame.image.load('space1.png')
background = pygame.transform.scale(background, (800,600))

shipImg = pygame.image.load('ship1.png')
shipImg = pygame.transform.scale(shipImg, (73,73))

mobImg = pygame.image.load('ufo.png')
mobImg = pygame.transform.scale(mobImg, (100,100))

def mobs_dodged(count):
font = pygame.font.SysFont(None, 25)
text = font.render("Dodged:"+str(count), True, white)
gameDisplay.blit(text,(0,0))

def mobs(mobx, moby, mobw, mobh):
gameDisplay.blit(mobImg,(mobx,moby))

def ship(x,y):
gameDisplay.blit(shipImg,(x,y))

def text_objects(text,font):
textSurface = font.render(text, True, white)
return textSurface, textSurface.get_rect()

def message_display(text):
font = pygame.font.Font('freesansbold.ttf',115)
TextSurf, TextRect = text_objects(text,font)
TextRect.center = ((display_width/2),(display_height/2))
gameDisplay.blit(TextSurf,TextRect)

pygame.display.update()

time.sleep(2)

game_loop()

def crash():
message_display('You Crashed!')

def button(msg,x,y,w,h,ic,ac):
mouse = pygame.mouse.get_pos()

if x + w > mouse[0] > x and y+h > mouse[1] > y:
pygame.draw.rect(gameDisplay, ac, (x,y,w,h))
else:
pygame.draw.rect(gameDisplay,ic, (x,y,w,h))
font = pygame.font.Font('freesansbold.ttf',20)
textSurf, textRect = text_objects(msg, font)
textRect.center = ((x+(w/2)),(y+(h/2))
gameDisplay.blit(textSurf, textRect)

最后一行给我一个无效的语法错误，突出显示" gameDisplay"。环顾四周后，我在项目中有了另一个文件"从...导入gameDisplay"。我认为如果删除该行将得到解决，但是它指出"未解决的导入"。我重新启动了Ecplise并清理了我的项目多次，但仍然无法正常工作。我将该程序发送到另一台计算机，但仍然收到相同的错误。当我删除" gameDisplay"行时，它告诉我" def game_intro()："中存在无效的语法。

所有帮助将不胜感激。