I take it that you are using something like notepad to write the script and then you are just runnning the script through the python console straight off. There are several ways that I have been able to see errors. Print-screen can help sometimes, but not when the console is obscured by a window. There are some things that work for me that may not for you. For example, if I 'grab' and hold on to a PyGame/PyOpenGL window, it freezes the Python console whilst I have hold of it. If you still can't see it, then the only other way to do it would be to get an IDE. Netbeans is a great IDE for Python development. Just go on netbeans.org and download any one of the language specific IDE bases, and add Python as a plugin (PM me if you need help with this).