Hi folks, For whatever reason, the pyglet package is getting a lot of attention on c.l.python these past few days. I am guilty of generating some of that potentially off-topic conversation myself. At the end of my last thread, I reported that I had found the pyglet-users newsgroup, and would direct my questions there.
https://groups.google.com/d/msg/comp.lang.python/ARtI0GC9RHc/_6URRrhz7nUJ Well, I joined pyglet-users. I have waited for about 36 hours for the moderator to approve my first post asking for help. Several other posts have appeared, but not mine. I don't think that I was impolite. Apologies to everyone, but I'm going to ask my questions here. As you may recall, I'm teaching some adolescent computer programming students. I need a Python 3-compatible GUI, preferably one oriented towards games. I might have that GUI in hand, but I need to test it myself first. I've been researching this issue for over a week. I have a student tomorrow, so I'm facing a bit of a deadline. (Yeah, I could teach him about B-trees instead, but... you know, kids.) In my own defense, I'm not entirely certain that the problems I have encountered are specific to pyglet. They might have to do with the limitations of the 2to3 program. I'm starting with my own Ubuntu 13.04 system. I downloaded pyglet-1.2alpha1, unzipped it and executed "sudo python3 setup.py install", as I have done with many a package. Then I tried running various programs in two directories (these programs are also on the pyglet.org web site). pyglet-1.2alpha1/examples/programming_guide/hello_world.py runs fine. pyglet-1.2alpha1/examples/programming_guide/image_viewer.py also runs fine. pyglet-1.2alpha1/examples/programming_guide/animation.py produces an error. Here's the traceback. ======================================================= Traceback (most recent call last): File "/usr/local/lib/python3.3/dist-packages/pyglet/resource.py", line 538, in animation identity = self._cached_animations[name] File "/usr/lib/python3.3/weakref.py", line 69, in __getitem__ o = self.data[key]() KeyError: 'dinosaur.gif' During handling of the above exception, another exception occurred: Traceback (most recent call last): File "animation.py", line 62, in <module> animation = pyglet.resource.animation('dinosaur.gif') File "/usr/local/lib/python3.3/dist-packages/pyglet/resource.py", line 540, in animation animation = pyglet.image.load_animation(name, self.file(name)) File "/usr/local/lib/python3.3/dist-packages/pyglet/image/__init__.py", line 2425, in load_animation raise first_exception File "/usr/local/lib/python3.3/dist-packages/pyglet/image/__init__.py", line 2417, in load_animation image = decoder.decode_animation(file, filename) File "/usr/local/lib/python3.3/dist-packages/pyglet/image/codecs/gdkpixbuf2.py", line 121, in decode_animation gif_stream = gif.read(file) File "/usr/local/lib/python3.3/dist-packages/pyglet/image/codecs/gif.py", line 85, in read raise ImageDecodeException('Not a GIF stream') pyglet.image.codecs.ImageDecodeException: Not a GIF stream ======================================================= >From earlier discussions, I know that distutils automatically executes 2to3 on >the pyglet core module, when you invoke pyglet's setup.py file from Python 3. >The setup script does not appear to run 2to3 on the code outside of the >package itself. And while I doubted that the KeyError I saw above was a >Python 2/3 compatibility issue, I tried running 2to3 on animation.py anyway. >2to3 seems to agree with me, reporting back "RefactoringTool: No files need to >be modified." Finally, I got errors when trying to run pyglet-1.2alpha1/tests/test.py. At first, it looked like the fix would be easy: ======================================================= File "tests/test.py", line 274 print '-' * 78 ^ SyntaxError: invalid syntax ======================================================= Clearly this was a problem for 2to3, so I ran it on test.py. It corrected that one print statement, and nothing else. Then I ran test.py again. This time I got a deeper problem: ======================================================= Traceback (most recent call last): File "test.py", line 215, in <module> import tests.regression File "../tests/regression/__init__.py", line 11, in <module> from pyglet.image import get_buffer_manager File "../pyglet/__init__.py", line 276 print '[%d] %s%s %s' % (thread, indent, name, location) ^ SyntaxError: invalid syntax ======================================================= This error suggests that, during the build and install process, 2to3 left some code uncorrected in pyglet/__init__.py. This has me worried. Could there be other code that 2to3 failed to correct? I don't want to offer my students a tool, only to have it crash on them. So, there you have it, the two errors that I am encountering. If anyone has any advice, I would appreciate it. Thanks! -- http://mail.python.org/mailman/listinfo/python-list
