GUI tookit for science and education

[Mateusz Łoskot]

Hi,

I'd like to ask some scientists or students
which GUI toolkit they would recommend
to develop scientific prototypes (for education and
testing some theories).
I think such toolkit should fill a bit different
needs and requirements:
- very simple to learn
- easy to install
- beautyfiers and advanced features are not required like OpenGL,
direct access to Windows GDI subsystem, beauty look and skinning
- multiplatform required

Let's say someone has big amount of algorithms and
statistical models implemented in Pascal
(not well designed console apps).
Now he want to move on using better and modern language
and GUI toolkit.
Python is seleceted as user friendly and simple
language, Pascal successor.

Thank you for any piece of advice in advance.
Regards
-- 
Mateusz Łoskot, mateusz (at) loskot (dot) net
Registered Linux User #220771