Writing or editing files using Django

I am a newbie in Django and in need of some hints to point in the right direction.

I am building a new application which users would enter some names and then
after clicking on submit, some non .html files should be created or modified
while entered data should be inserted in some parts of the file that have been created
or modified. also those files are not going to be served in web, they are just
some static files located at different locations in system for other uses.


should I start using template  to generate those non html files ?
does Django has a module to create a file and capable of insert parameters to file ?
which python template is best suited and supported by Django ? jinja2 or mako or cheetah ?

what is the best way of calling C++ programs within Django ?