pygame.error“无法打开image.png”仅在命令提示符下 [英] pygame.error "couldn't open image.png" only in command prompt

问题描述

我有一个非常简单的python程序，用于学习pygame，除其他外，我还使用图像。

I've got a very simple python program I wrote to learn pygame, and among other things I use an image.

当我使用PyCharm运行该程序时，或者当我双击文件运行它时，它可以正常工作。但是，如果尝试通过命令提示符运行它，则会收到以下错误：

When I run the program with PyCharm, or when I run it by double-clicking on the file, it works fine. However, if I try to run it through the command prompt, I get the following error:

C:\Users\julix>C:\Users\julix\Documents\test\pygame_tutorial.py
pygame 1.9.4
Hello from the pygame community. https://www.pygame.org/contribute.html
Traceback (most recent call last):
  File "C:\Users\julix\Documents\test\pygame_tutorial.py", line 21, in <module>
    carImg = pygame.image.load("racecar.png")
pygame.error: Couldn't open racecar.png

这是我的代码中所指的行：

This is the line in my code it refers to:

carImg = pygame.image.load("racecar.png")

图像 racecar.png位于与程序完全相同的目录。
令人困惑的部分是我的代码似乎很好，因为通过双击运行它时没有错误。

The image "racecar.png" is located in exactly the same directory as the program. The confusing part is that my code seems to be fine since there are no errors when I run it by double-clicking.

可以在必要时发布完整代码。
预先感谢

Can post full code if necessary. Thanks in advance

推荐答案

事实上，文件与程序位于同一目录中无关紧要。如果您不提供路径，程序将在工作目录中查找文件，而该目录可能是一个完全不同的文件。

The fact, that the file is in the same directory as the program doesn't matter. If you don't provide a path the program will look for the file in the working directory which might be a total different one.

如果要使用特定目录，请将路径添加到文件名。一种灵活的方法是确定当前文件的路径并使用它。 Python可以使用 os.path.dirname 。

If you want to use a specific directory add your path to the filename. A flexible approach would be to determine the path of the current file and use that. Python has a way to do that with os.path.dirname.

import os.path
print(os.path.dirname(__file__))

在这种情况下，它将导致以下代码：

In this case it would lead to the following code:

import os.path
filepath = os.path.dirname(__file__)
carImg = pygame.image.load(os.path.join(filepath, "racecar.png"))

---

这是使用很棒的 pathlib ：

import pathlib
filepath = pathlib.Path(__file__).parent
carImg = pygame.image.load(filepath / "racecar.png")

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