from http://code.google.com/p/pythonxy/wiki/AdditionalPlugins - Installation notes
Plugins available on this page are *not* included in *Python(x,y)* distributions.
Note that each *Python(x,y)* plugin is compatible with a standard Python installation (i.e. you may install them on top of any Python installation, even without installing *Python(x,y)*).
- so one need to download it seperately either from python(x,y) or from
pyparsing's project site.