I can't seem to find any references that suggest that wxPython was built for Mac OS 9, only Mac OS X. Seems like one would want to use a faster, compiled language like C/C++ or Pascal for Mac OS 7/8/9 instead of a slower, interpreted language like Python. (Though I do love me some Python!)
In order to use wxWidgets under Mac OS 9, you'd need to compile the toolkit library. Which could be done using an old enough version and a copy of CodeWarrior.
You'd probably find way more documentation, helper libraries, etc, if you went with using the native toolbox and CodeWarrior or THINKPascal. Old introduction books can usually be found cheap on Amazon or other online book stores. (There's always the Apple Developer books too for advance stuff.)
Don't mean to burst your bubble, but it looks like the path you were hoping to go (wxPython for Mac OS 9) never really matured. (No documentation, builds, etc.) Which would only hinder your developing rather than help. It's always better to go with something that's well documented and still accessible. (You can still find copies of CodeWarrior and THINKPascal to buy or other means.)
In order to use wxWidgets under Mac OS 9, you'd need to compile the toolkit library. Which could be done using an old enough version and a copy of CodeWarrior.
You'd probably find way more documentation, helper libraries, etc, if you went with using the native toolbox and CodeWarrior or THINKPascal. Old introduction books can usually be found cheap on Amazon or other online book stores. (There's always the Apple Developer books too for advance stuff.)
Don't mean to burst your bubble, but it looks like the path you were hoping to go (wxPython for Mac OS 9) never really matured. (No documentation, builds, etc.) Which would only hinder your developing rather than help. It's always better to go with something that's well documented and still accessible. (You can still find copies of CodeWarrior and THINKPascal to buy or other means.)