Pong tutorial not working?

[Andrew Doberstein]

I'm fairly new to python and am trying to use the Pong tutorial to learn Kivy.  Unfortunately, even when I copy/paste the code in its entirety into my files, the tutorial doesn't work! 

Other kivy stuff does run, including the simpler versions of the pong tutorial before the ball is introduced. The only thing I have changed is the comment at the top of the Kivy file to match my version number of Kivy.

I'm working on a computer lab computer, it's running Windows 7 Enterprise. Here's what happens when I try to run main.py:

[INFO              ] Kivy v1.4.1

[INFO              ] [Logger      ] Record log in C:\Users\labuser\.kivy\logs\kivy_13-03-28_3.txt

[INFO              ] [Factory     ] 123 symbols loaded

[DEBUG             ] [Cache       ] register <kv.lang> with limit=None, timeout=Nones

[DEBUG             ] [Cache       ] register <kv.image> with limit=None, timeout=60s

[DEBUG             ] [Cache       ] register <kv.atlas> with limit=None, timeout=Nones

[DEBUG             ] [Cache       ] register <kv.texture> with limit=1000, timeout=60s

[DEBUG             ] [Cache       ] register <kv.shader> with limit=1000, timeout=60s

[INFO              ] [Window      ] using <pygame> as window provider

[INFO              ] [GL          ] OpenGL version <4.1.10524 Compatibility Profile Context>

[INFO              ] [GL          ] OpenGL vendor <ATI Technologies Inc.>

[INFO              ] [GL          ] OpenGL renderer <ATI Radeon HD 5450>

[INFO              ] [GL          ] Shading version <4.10>

[INFO              ] [GL          ] Texture max size <16384>

[INFO              ] [GL          ] Texture max units <16>

[INFO              ] [GL          ] OpenGL parsed version: 4, 1

[INFO              ] [Shader      ] fragment shader: <Fragment shader was successfully compiled to run on hardware.>

[INFO              ] [Shader      ] fragment compiled successfully

[INFO              ] [Shader      ] vertex shader: <Vertex shader was successfully compiled to run on hardware.>

[INFO              ] [Shader      ] vertex compiled successfully

[INFO              ] [Shader      ] program: <Vertex shader(s) linked, fragment shader(s) linked.>

[DEBUG             ] [ImagePygame ] Load <C:\Python27\lib\site-packages\kivy\data\glsl\default.png>

[INFO              ] [Window      ] virtual keyboard not allowed, single mode, not docked

[INFO              ] [Text        ] using <pygame> as text provider

 Traceback (most recent call last):

   File "C:\Users\labuser\Desktop\main.py", line 74, in <module>

     PongApp().run()

   File "C:\Python27\lib\site-packages\kivy\app.py", line 523, in run

     root = self.build()

   File "C:\Users\labuser\Desktop\main.py", line 67, in build

     game = PongGame()

   File "C:\Python27\lib\site-packages\kivy\uix\widget.py", line 113, in __init__

     Builder.apply(self)

   File "C:\Python27\lib\site-packages\kivy\lang.py", line 1217, in apply

     self._apply_rule(widget, rule, rule)

   File "C:\Python27\lib\site-packages\kivy\lang.py", line 1271, in _apply_rule

     cls = Factory_get(cname)

   File "C:\Python27\lib\site-packages\kivy\factory.py", line 70, in __getattr__

     raise FactoryException('Unknown class <%s>' % name)

 kivy.factory.FactoryException: Unknown class <PongBall>

Apparently, it doesn't know what <PongBall> is? But I copy/pasted the code so it's exactly like the examples, and I can see that PongBall is definitely defined:

 

Anyone know what's going on?

[krister viirsaar]

yes, you're missing the pong.kv. That's the bottom part of the code on that page you posted.

[Akshay Arora]

[INFO              ] Kivy v1.4.1

Please update your Kivy installation!!

Best Regards

On Thu, Mar 28, 2013 at 11:44 PM, krister viirsaar <krister....@gmail.com> wrote:

yes, you're missing the pong.kv. That's the bottom part of the code on that page you posted.

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[Tu Chu]

Hi,

I running version 1.9.0, but i still that error :(
Help me.

Vào 02:11:21 UTC+7 Thứ Sáu, ngày 29 tháng 3 năm 2013, qua-non đã viết:

[Tu Chu]

This my error