easy 3D graphics for rendering geometry?

[gsal]

By the way, VPython crashes my computer rather easily:

- launch the editor
- open python file
- press F5 to run
- when the graphical windows first appears, it will be accompanied by
a cursor AND a sand watch to indicate that python is busy doing
somethin...if before the watch goes away, I attempt to manipulate
(drag or resize) the window...
- ...the computer looses it!

At the end, sometimes, the computer looks like is trying to take care
of things but simply takes forever; other times, I end up with a
blank
screen and an unresponsive computer and have to press the power
button
for about 10 seconds to get it to power off.

gsal