There’s Something About Code

For those of you that use the standard Python shell when trying out stuff, IPython is an enhanced shell with lots of useful features, including tab completion and command history across sessions. GLiPy is an enhancement over IPython. It provides plotting of numpy structures using OpenGL, as shown below.
A side effect of the graphical nature of GLiPy and the fact that it has a GUI, is that it has a message pump going. This means you can experiment with Wx or pyglet without starting additional threads to get an application object up and running. The short example below shows me loading the Sine source from pyglet and playing a short sine wave.
The difference between running these three lines in GLiPy and IPython, is that the sound plays for 4 seconds when run in GLiPy, while using IPython you only get a short beep. The reason for this is that there is no timer set up to get the next chunk of data from the sine source. To get the rest of the sine wave, you have to do pyglet.app.run() which then blocks your main thread.