安装pySDL2后SDL2的RuntimeError

Question

我通过安装了pySDL2 0.4.1

下载源包，进入CCD_ 1。然后我尝试运行粘贴到PyDev eclipse"the Pong Game:Getting Started"教程中的代码示例：

导入操作系统，系统

try:
    os.environ["PYSDL2_DLL_PATH"] = "/home/me/workspace/Pong/third-party"
    print(os.getenv("PYSDL2_DLL_PATH"))
    from sdl2 import events, SDL_QUIT
    import sdl2.ext as sdl2ext
except ImportError:
    import traceback
    traceback.print_exc()
    sys.exit(1)
def run():
    sdl2ext.init()
    window = sdl2ext.Window("The Pong Game", size=(800, 600))
    window.show()
    running = True
    while running:
        events = sdl2ext.get_events()
        for event in events:
            if event.type == SDL_QUIT:
                running = False
                break
        window.refresh()
    return 0
if __name__ == "__main__":
    sys.exit(run())

我得到以下错误：

Traceback (most recent call last):
  File "/home/me/workspace/Pong/Main.py", line 11, in <module>
    from sdl2 import *
  File "/usr/local/lib/python3.3/dist-packages/sdl2/__init__.py", line 2, in <module>
    from .dll import get_dll_file, _bind
  File "/usr/local/lib/python3.3/dist-packages/sdl2/dll.py", line 90, in <module>
    dll = _DLL("SDL2", ["SDL2", "SDL2-2.0"], os.getenv("PYSDL2_DLL_PATH"))
  File "/usr/local/lib/python3.3/dist-packages/sdl2/dll.py", line 51, in __init__
    raise RuntimeError("could not find any library for %s" % libinfo)
RuntimeError: could not find any library for SDL2

我已经通过Synaptic安装了Pypy和libSDL，并且在PyDev-PythonPath中没有添加外部库。

我做错了什么？

Answer 1

PySDL2似乎找不到SDL2运行库。它们可以在libsdl下载页面上找到（linux除外）。

然后，您应该让PySDL2位于库所在的位置，方法是将PYSDL2_DLL_PATH设置为：

# Win32 platforms
set PYSDL2_DLL_PATH=C:pathtofancy_projectthird_party
# Unix/Posix-alike environments - bourne shells
export PYSDL2_DLL_PATH=/path/to/fancy_project/third_party
# Unix/Posix-alike environments - C shells
setenv PYSDL2_DLL_PATH /path/to/fancy_project/third_party

或者在python脚本中：

# Win32 Platform path
os.environ["PYSDL2_DLL_PATH"] = "C:\path\to\fancy_project\third_party"
# Unix/Posix-alike environments path
os.environ["PYSDL2_DLL_PATH"] = "/path/to/fancy_project/third_party"

这样，PySDL2将始终找到库文件（当然，只要路径正确）！在我看来，这是比较容易的方法。

SDL2编码快乐！

Answer 2

几乎解决了。Ubuntu有SDL1.2，SDL的主下载页面也指向SDL1.2。需要通过键入来安装源程序包

mkdir /opt/sdl2
cd /opt/sdl2
hg clone http://hg.libsdl.org/SDL SDL
cd SDL
mkdir build && cd build
../configure
make
sudo make install 

然后从下载SDL_image-2.x.x.tar.gzhttp://www.libsdl.org/tmp/SDL_image/

和类型：

../configure
make
sudo make install 

最后类型：

ldconfig /usr/local/lib

现在唯一不起作用的是SDL_QUIT没有被识别。