在 python 中写入文件失败

Question

我在一个简单的无尽隧道赛车类型游戏中写入高分文件时遇到了一个小问题。

如果在我开始游戏之前，文件中没有任何内容，它将写入高分。但是在文件中有一个数字之后，它就完全忽略了：

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

要打开文件并检查是否写了一些东西，我有代码：

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

h = hf.readline()

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

重述：

如果 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 txt 文件。

如果写入了某些内容（在第一次播放和重新启动应用程序之后），分数将保持在文件中写入的内容。帮忙？

如果需要完整代码：

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

在打开同一个文件进行写入之前，您可能必须关闭 hf。

Answer 2

在读取时尝试将 hs 转换为 int（否则它将是字符串）？

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

例如比较字符串和整数会很奇怪..即：

>>> 12 > "10"
False

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