I will participate a modeling competition, which spends three days.
I need a language which is fast and designed for modeling, such as to 2D/3D models.
I have considered these languages:

Python
Sage

Which languages would you use?
You should use the language that you know best and that has good-enough tools for the task at hand. Depending on when the competition is you may have no time to learn a new language/environment.
Most suitable language(s) for simulations in modeling?