准备在游戏页面添加一个历史最高分的显示，在关卡得分和关卡等级后面，recordscore 在这之前还没有定义，直接做了一个 global recordscore 全局变量，但是还是报错； 报错信息如下：
pygame 1.9.6 Hello from the pygame community. https://www.pygame.org/contribute.html Traceback (most recent call last): File "G:/plane/main.py", line 539, in <module> main() File "G:/plane/main.py", line 463, in main record_score_text = score_font.render("历史最高分: %d" % recordscore, True, WHITE) NameError: name 'recordscore' is not defined代码：
if life_num: for i in range(life_num): screen.blit(life_image, \ (width - 10 - (i + 1) * life_rect.width, \ height - 10 - life_rect.height)) score_text = score_font.render(str("本关卡得分: %s" % score), True, WHITE) screen.blit(score_text, (10, 5)) level1_text = level1_font.render("关卡等级:%s "% level, True, WHITE) screen.blit(level1_text, (10, 40)) record_score_text = score_font.render("历史最高分: %d" % recordscore, True, WHITE) screen.blit(record_score_text, (10, 60)) elif life_num == 0: pygame.mixer.music.stop() pygame.mixer.stop() # 停止发放补给 pygame.time.set_timer(SUPPLY_TIME, 0) if not recorded: recorded = True # 读取历史最高分 with open("record.txt", "r") as f: recordscore = int(f.read()) if score > recordscore: with open("record.txt", "w") as f: f.write(str(score)) # 绘制结束画面 record_score_text = score_font.render("Best: %d" % recordscore, True, WHITE) screen.blit(record_score_text, (50, 50))