无法在pygame中打开.png文件 [英] Can't open .png file in pygame

问题描述

我用powerups制作了一个pong游戏，它可以在windows中运行，但是在Linux中，它给了我错误无法打开paddle.png。

I have made a pong game with powerups and it works in windows, but in linux, it gives me the error "Can't open paddle.png".

同样，它适用于Windows，但不适用于Linux。

Again, it works in Windows, but not Linux.

代码示例： - 代码的一部分，而不是整个

Sample of the code: -- MEANS PART OF THE CODE, NOT WHOLE THING

import pygame, sys, time
from random import *

pygame.init()

disw = 640
dish = 480
black = (  0,  0,  0)
white = (255,255,255)
green = (  0,255,  0)

gameDisplay = pygame.display.set_mode((disw, dish))
pygame.display.set_caption("Super-Pong", "S-P")
Clock = pygame.time.Clock()

playerOne = pygame.image.load("paddle.png")
playerOneX = 50
playerOneY = 180

playerTwo = pygame.image.load("paddle.png")
playerTwoX = 590
playerTwoY = 180

问题：无法在Linux中为python程序打开.png文件。

Problem: Won't open .png files in linux for python program.

尝试：在Windows中运行，在Windows中工作。

Tried: Running in Windows, worked in Windows.

他们也在同一个目录中。

They are in the same directory as well.

我也尝试过制作paddle.jpg和一对夫妇其他格式，没有骰子。

I've also tried making it paddle.jpg and a couple other formats, no dice.

我的错误：

[hunter@localhost ~]$ su -
Password: 
Last login: Sun Nov 30 16:56:52 EST 2014 on pts/0
[root@localhost ~]# python /home/hunter/Documents/realprojects/superpong/Super-Pong.py
Traceback (most recent call last):
  File "/home/hunter/Documents/realprojects/superpong/Super-Pong.py", line 16, in <module>
    playerOne = pygame.image.load("paddle.png")
pygame.error: Couldn't open paddle.png
[root@localhost ~]# 

推荐答案

当你告诉Python库中的函数加载具有相对路径的文件时，例如paddle.png，它将查看当前工作目录（CWD）。如果您启动Python程序而CWD是用户 root 的主目录，Pygame将在用户 root的主目录中查找图像文件除非另有说明。

When you tell a function in a Python library to load a file with a relative path, such as "paddle.png", it'll look in the current working directory (CWD). And if you start a Python program while the CWD is the home directory of user root, Pygame will look for image files in the home directory of user root unless otherwise specified.

要更改Pygame查找图片的位置，您需要执行以下三项操作之一：

To change where Pygame looks for images, you need to do one of three things:

• 将当前工作目录（ cd ）更改为包含 paddle.png <的目录/ code>在运行 Super-Pong.py 之前。当您双击Python程序时，Python for Windows会自动执行此操作，这就是它在Windows中工作的原因。


• 在程序中，将当前工作目录更改为包含<$ c的目录$ c> paddle.png ，这可能是包含该程序的同一目录（ Super-Pong.py ）。该程序的路径作为 sys.argv [0] 传递，所以试试这个： os.chdir（os.path.dirname（__ file__） ）


• 在程序中，添加文件的路径。同样，假设 paddle.png 位于同一文件夹中，请尝试以下操作： playerOne = pygame.image.load（os.path.join（os。 path.dirname（__ file__），paddle.png））

• Change the current working directory (cd) to the directory containing paddle.png before running Super-Pong.py. Python for Windows automatically does this when you double-click a Python program, which is why it worked in Windows.
• In the program, change the current working directory to the directory containing paddle.png, which is likely the same directory containing the program (Super-Pong.py). The path to the program is passed as sys.argv[0], so try this: os.chdir(os.path.dirname(__file__))
• In the program, add the path to the file. Again, assuming paddle.png is in the same folder, try this: playerOne = pygame.image.load(os.path.join(os.path.dirname(__file__), "paddle.png"))

（为什么 su - 无论如何？游戏不需要以超级用户身份运行。）

(Why su - anyway? A game shouldn't need to run as the superuser.)

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