No, that's actually a bit more complicated. The library I'm working on is designed for performing calculations on large-scale graphs (~10000 nodes and edges). I want to create a Python interface for that library, so what I want to accomplish is that I could just type "from igraph import *" in a Python command line and then access all of the functionalities of the igraph library. Now it works, except the fact that if, for example, I start computing the diameter of a random graph of ~100000 nodes and ~200000 edges, I can't cancel it, because the KeyboardInterrupt is not propagated to the Python toplevel (or it isn't even generated until the igraph library routine returns). I would like to allow the user to cancel the computation with the usual Ctrl-C and return to the Python interactive interface. This whole feature is not vital, but it would mean a big step towards user-friendliness. I have access to the source code of igraph as well (since one of my colleagues is developing it), so another possible solution would be to inject some calls into the igraph source code which temporarily cancels the computation and checks whether there's something waiting in the Python interpreter, but I haven't found any function in the API which allows me to do this.
Tamas -- http://mail.python.org/mailman/listinfo/python-list
