There's an RPM (and yum repository) @ people.redhat.com/rsawhill/rpms. To configure it and install Pyrite, simply run the following as root: yum install http://people ...
wxGlade is a GUI builder for wxWidgets/wxPython. It can create Python, C++, Perl, Lisp and XRC output. Unpack the archive to a known location and maybe add it to the path. If you are familiar with git ...
You don't need the GUI bloat ...