python失敗的文件編寫

Question

我在一個簡單的無盡的隧道賽車類型的遊戲中寫一個高分的文件有一個小問題。

如果在我開始遊戲之前寫了高分，文件中沒有任何內容。但文件中的一個號碼後，它完全忽略了：

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

要打開的文件，並檢查，如果事情是寫我的代碼：

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

h = hf.readline() 

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

重述：

如果在hs.txt中沒有寫入任何內容，則將高分添加到txt文件中，然後寫入該文件。

如果寫入內容（在第一次播放和重新啓動應用程序之後），分數將保留爲文件中的內容。幫幫我？如果需要的話

全碼：

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

嘗試在讀取它時將hs轉換爲int（否則它將是一個字符串）？

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

例如你會得到奇怪的比較字符串和整數..即：

>>> 12 > "10" 
False 

在python解釋器。 （Python應該可能會拋出一個異常，我想不出你想要比較一個int和一個字符串的時間）。

Answer 2

您可能打開同一文件進行寫入之前關閉HF。