WebPath: Python XPath 2 engine now up on Sourceforge
Where should you start with this code? Step zero, if you haven’t already, is to look through my XML 2007 slides on my site. First thing is to grab a copy of PLY, which is a dependency. Then with all these files in your current directory, run python with no parameters. At the interpreter prompt type
import demo then
demo.demo2(), and so on. This will give you a feel for how the system works. Look at the source of demo.py to see how it works at the high level.
To actually get into the code, I suggest opening webpath.py and scrolling down to the end, where a large series of unit tests begins. Tracing through these will be (I hope!) instructive on how the various details of the engine are put together.
There are many missing pieces (a few intentionally so). So have a look around the code and start thinking about what you could do with it. One thing I would love to have happen soon is getting rid of minidom, replacing it with something more robust.
If you want developer access on Sourceforge, drop me a note with your sf username. -m