Python sdl2路径无效

Question

我正在测试pysdl2的learntofly教程。（我也是python新手） http://pysdl2.readthedocs.io/en/rel_0_9_4/tutorial/index.html

我得到一个错误，认为这只是一些路径问题。在

错误：

guillaume@ubuntu:~/script$ python sdlTest.py 
Traceback (most recent call last):
  File "sdlTest.py", line 4, in <module>
    RESOURCES = sdl2.ext.Resources(__file__, "resources")
  File "/usr/lib/python2.7/dist-packages/sdl2/ext/resources.py", line 139, in __init__
    self.scan(path, subdir, excludepattern)
  File "/usr/lib/python2.7/dist-packages/sdl2/ext/resources.py", line 313, in scan
    raise ValueError("invalid path '%s'" % path)
ValueError: invalid path 'sdlTest.py'

当前代码：

^{pr2}$

我在ubuntu 16.04上 安装的python版本

guillaume@ubuntu:~/script$ python -V
Python 2.7.12

python-sdl2版本：

guillaume@ubuntu:~/script$ dpkg -s python-sdl2
Package: python-sdl2
Status: install ok installed
Priority: optional
Section: python
Installed-Size: 392
Maintainer: Ubuntu Developers <ubuntu-devel-discuss@lists.ubuntu.com>
Architecture: all
Source: pysdl2
Version: 0.9.3+dfsg2-1
Depends: python:any (<< 2.8), python:any (>= 2.7.5-5~), libsdl2-2.0-0, libsdl2-gfx-1.0-0, libsdl2-image-2.0-0, libsdl2-mixer-2.0-0, libsdl2-ttf-2.0-0
Recommends: python-numpy
Suggests: pysdl2-doc
Description: Python bindings to the SDL2 C-library (Python 2 build)
 PySDL2 is a ctypes based wrapper around the Simple DirectMedia Layer 2 library
 to allow portable low level access to a video framebuffer, audio output, mouse
 and keyboard.
 .
 This module is built for Python version 2.x.
Original-Maintainer: Debian Python Modules Team <python-modules-team@lists.alioth.debian.org>
Homepage: https://bitbucket.org/marcusva/py-sdl2

Python：

guillaume@ubuntu:~/script$ echo $PYTHONPATH
/usr/lib/python2.7/dist-packages/sdl2:
guillaume@ubuntu:~/script$ ls /usr/lib/python2.7/dist-packages/sdl2/
audio.py       filesystem.py       keycode.pyc     render.py     stdinc.pyc
audio.pyc      filesystem.pyc      loadso.py       render.pyc    surface.py
blendmode.py   gamecontroller.py   loadso.pyc      rwops.py      surface.pyc
blendmode.pyc  gamecontroller.pyc  log.py          rwops.pyc     syswm.py
clipboard.py   gesture.py          log.pyc         scancode.py   syswm.pyc
clipboard.pyc  gesture.pyc         messagebox.py   scancode.pyc  timer.py
cpuinfo.py     haptic.py           messagebox.pyc  sdlgfx.py     timer.pyc
cpuinfo.pyc    haptic.pyc          mouse.py        sdlgfx.pyc    touch.py
dll.py         hints.py            mouse.pyc       sdlimage.py   touch.pyc
dll.pyc        hints.pyc           pixels.py       sdlimage.pyc  version.py
endian.py      __init__.py         pixels.pyc      sdlmixer.py   version.pyc
endian.pyc     __init__.pyc        platform.py     sdlmixer.pyc  video.py
error.py       joystick.py         platform.pyc    sdlttf.py     video.pyc
error.pyc      joystick.pyc        power.py        sdlttf.pyc
events.py      keyboard.py         power.pyc       shape.py
events.pyc     keyboard.pyc        rect.py         shape.pyc
ext            keycode.py          rect.pyc        stdinc.py
guillaume@ubuntu:~/script$ 

Answer 1

您可能无法在项目目录中包含资源文件夹。在

这个错误有点模棱两可，但我已经解决了。在

Answer 2

“resource”是指运行sdl2python脚本的子目录的名称。在

在importing上的sdl2示例中，他们需要一个名为“resource”的目录来加载图像，这些图像将在随后的示例中显示在sdl2窗口中。。在

We need some resources from the resources folder, so that we have a test image around to display on the window later on. In your own applications, it is unlikely that you will ever need to import them, but we need them here, so we use the sdl2.ext.Resources class to have them available.

如果要继续使用该行：

RESOURCES = sdl2.ext.Resources(__file__, "resources")

然后在运行脚本的目录中，创建一个名为“resources”的子目录并运行脚本。您将看到错误消息不会出现。您可以使用“resources”以外的名称，只需确保存在同名的子目录。在

更重要的是，要使用sdl2，只需要以下两行代码来加载sdl2模块，就可以开始了。。在

^{pr2}$