Python - 错误:无法打开 .png 文件 [英] Python - error: couldn't open .png file

问题描述

不确定我做错了什么，我正在学习如何使用 Python 和 PyGame 制作游戏的教程，但出现错误:

Not sure what I did wrong, I am following a tutorial on how to make a game with Python and PyGame and I get the error:

 pygame.error: Couldn't open resources/images/dude.png    

我的代码如下:

import pygame
from pygame.locals import *


pygame.init()
width, height = 640, 480
screen=pygame.display.set_mode((width,height))

player = pygame.image.load("resources/images/dude.png")

while 1:

    screen.fill(0)

    screen.blit(player, (100,100))

    pygame.display.flip()

    for event in pygame.event.get():


        if event.type==pygame.QUIT:
            pygame.quit()
            exit(0)

完整的错误信息是:

ALSA lib confmisc.c:768:(parse_card) cannot find card '0'
ALSA lib conf.c:4292:(_snd_config_evaluate) function
snd_func_card_driver  returned error: No such file or directory
ALSA lib confmisc.c:392:(snd_func_concat) error evaluating strings
ALSA lib conf.c:4292:(_snd_config_evaluate) function snd_func_concat
returned error: No such file or directory
ALSA lib confmisc.c:1251:(snd_func_refer) error evaluating name
ALSA lib conf.c:4292:(_snd_config_evaluate) function snd_func_refer
returned error: No such file or directory
ALSA lib conf.c:4771:(snd_config_expand) Evaluate error: No such file  or
directory
ALSA lib pcm.c:2266:(snd_pcm_open_noupdate) Unknown PCM default
Traceback (most recent call last):
  File "/root/Documents/PyGame/game.py", line 9, in <module>
    player = pygame.image.load("resources/images/dude.png")
pygame.error: Couldn't open resources/images/dude.png

推荐答案

改用相对路径(这样做总是更好):

Use relative paths instead (it's always better to do so) :

import os

current_path = os.path.dirname(__file__) # Where your .py file is located
resource_path = os.path.join(current_path, 'resources') # The resource folder path
image_path = os.path.join(resource_path, 'images') # The image folder path

通过这样做，无论您将包含 .py 文件的文件夹移动到何处，其子目录(以及其中包含的任何内容)仍然可以访问，而无需修改代码.

By doing this, wherever you move the folder containing your .py file, its subdirectories (and therefore whatever they contain) can still be accessed without you having to modify your code.

最终代码:

import pygame
import os
from pygame.locals import *


pygame.init()

width, height = 640, 480
screen = pygame.display.set_mode((width, height))

current_path = os.path.dirname(__file__) # Where your .py file is located
resource_path = os.path.join(current_path, 'resources') # The resource folder path
image_path = os.path.join(resource_path, 'images') # The image folder path

player_image = pygame.image.load(os.path.join(image_path, 'dude.png'))

while 1:

    screen.fill(0)

    screen.blit(player, (100,100))

    pygame.display.flip()

    for event in pygame.event.get():


        if event.type==pygame.QUIT:
            pygame.quit()
            exit(0)

对所有其他文件使用这种访​​问方法，您将避免一系列问题.

Use this accessing method for all your other files, and you'll avoid a bunch of problems.

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