python失败的文件编写

Question

我在一个简单的无尽的隧道赛车类型的游戏中写一个高分的文件有一个小问题。

如果在我开始游戏之前写了高分，文件中没有任何内容。但文件中的一个号码后，它完全忽略了：

if score > hs: 
    hs = score 
    hsfile = open("hs.txt", "w") 
    hsfile.write(str(hs)) 
    hsfile.close() 

要打开的文件，并检查，如果事情是写我的代码：

hf = open("hs.txt", "r") 

h = hf.readline() 

if len(h) > 0: 
    hs = h 
else: 
    hs = 0 

重述：

如果在hs.txt中没有写入任何内容，则将高分添加到txt文件中，然后写入该文件。

如果写入内容（在第一次播放和重新启动应用程序之后），分数将保留为文件中的内容。帮帮我？如果需要的话

全码：

import pygame, sys, time, random 

pygame.init() 

disw = 640 
dish = 480 

white = (255,255,255) 
black = ( 0, 0, 0) 
brown = (193,125, 58) 
green = ( 0,220, 0) 

gameExit = False 

score = 0 

speed = -2 

spawned = False 

hf = open("hs.txt", "r") 

h = hf.readline() 

if len(h) > 0: 
    hs = h 
else: 
    hs = 0 

if gameExit == True: 
    h.close() 

rockx = 640 

rocky = random.randint(0, dish) 

rockw = random.randint(10,150) 

rockh = random.randint(10,150) 

ship = pygame.image.load("ship.png") 

bg = pygame.image.load("bg.png") 

gameOver = False 

def rock(thingx,thingy,thingw,thingh,color): 
    pygame.draw.rect(gameDisplay, color, [thingx, thingy, thingw, thingh]) 

def rockhit(): 
    global score, spawned, speed, rockx, rocky, rockw, rockh 
    rockx = 640 
    rocky = random.randint(0, dish) 
    rockw = random.randint(10,150) 
    rockh = random.randint(10,150) 
    score += 1 
    spawned = False 
    speed -= 1 

class Ship(): 
    def __init__(self, x, y, w, h): 
     self.x = x 
     self.y = y 
     self.w = w 
     self.h = h 

gameDisplay = pygame.display.set_mode((disw,dish)) 
pygame.display.set_caption("Tunnel") 
Clock = pygame.time.Clock() 

def main(): 
    global gameOver, score, spawned, speed, rockx, rocky, rockw, rockh, hs, gameExit 
    shipdimensions = Ship(200, 10, 60, 40) 
    xc = 0 
    yc = 0 
    def startGame(): 
     gameDisplay.blit(bg, (0, 0)) 
     gameDisplay.blit(ship, (shipdimensions.x, shipdimensions.y)) 

    while not gameExit: 
     for event in pygame.event.get(): 
      if event.type == pygame.QUIT: 
       pygame.quit() 
       quit() 

      elif event.type == pygame.KEYDOWN: 
       if event.key == pygame.K_w: 
        yc = -6 
       if event.key == pygame.K_s: 
        yc = 6 
       if event.key == pygame.K_SPACE: 
        if gameOver == True: 
         startGame() 
         gameOver = False 
         speed = -2 

      elif event.type == pygame.KEYUP: 
       if event.key == pygame.K_w or event.key == pygame.K_s: 
        yc = 0 

     shipdimensions.y += yc 
     rockx += speed 

     gameDisplay.fill(black) 
     gameDisplay.blit(bg, (0, 0)) 
     gameDisplay.blit(ship, (shipdimensions.x, shipdimensions.y)) 

     font = pygame.font.SysFont(None, 25) 
     text = font.render("Score: " + str(score), True, green) 
     gameDisplay.blit(text, (1,1)) 

     font = pygame.font.SysFont(None, 25) 
     text = font.render("High Score: " + str(hs), True, green) 
     gameDisplay.blit(text, (1,20)) 

     if gameOver == True: 
      font = pygame.font.SysFont(None, 25) 
      text = font.render("Game Over, press 'Space' to restart.", True, green) 
      gameDisplay.blit(text, (100,200)) 

     if shipdimensions.y < rocky + rockh: 
      if shipdimensions.y + shipdimensions.h < rocky: 
       pass  
      elif shipdimensions.x > rockx and shipdimensions.x < rockx + rockw or shipdimensions.x + shipdimensions.w > rockx and shipdimensions.x + shipdimensions.w < rockx + rockw:    
       rockx = 640 
       rocky = random.randint(0, dish) 
       rockw = random.randint(10,150) 
       rockh = random.randint(10,150) 
       speed = 0 
       gameOver = True 
       score = 0 

     if gameOver == False and spawned == False: 
      rock(rockx,rocky,rockw,rockh,brown) 

     if shipdimensions.y <= 0: 
      shipdimensions.y = 0 

     if shipdimensions.y + shipdimensions.h >= dish: 
      shipdimensions.y = dish - shipdimensions.h 

     if rockx <= 0: 
      rockhit() 

     if score > hs: 
      hs = score 
      hsfile = open("hs.txt", "w") 
      hsfile.write(str(hs)) 
      hsfile.close() 


     pygame.display.update() 
     Clock.tick(60) 

if '__main__' == __name__: 
    main() 

Answer 1

尝试在读取它时将hs转换为int（否则它将是一个字符串）？

if len(h) > 0: 
    hs = int(h) 
else: 
    hs = 0 

例如你会得到奇怪的比较字符串和整数..即：

>>> 12 > "10" 
False 

在python解释器。 （Python应该可能会抛出一个异常，我想不出你想要比较一个int和一个字符串的时间）。

Answer 2

您可能打开同一文件进行写入之前关闭HF。