Newbie: how to write modules without C

[Maarten van Reeuwijk]

I want to extend python with a framework for reading, manipulating and
visualising CFD data. Basically I want to have an environment in which I
can quickly and interactively produce results, and Python with SciPy seems
to be an ideal start. 

However, the only references I can find about writing modules talk about
using C, and that's exactly what I DON'T want to do. I don't need any
low-level operations, just handy classes that understand my file-format and
wrap SciPy features etc. 

So my questions are:
1) Is it necessary to resort to C when writing modules or can you use normal
Python?
2) How do you load a Python script into a python session?
3) Can various python scripts be combined into a module?

Thanks in advance! 


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Maarten van Reeuwijk                        Heat and Fluid Sciences
Phd student                             dept. of Multiscale Physics
www.ws.tn.tudelft.nl                 Delft University of Technology