You should better use another ide for python (there are great ones out there like SPE or pyDev).
We're developing in both in C++ and Python at the same time, in the same project (via Boost.Python).
So we'd like to use only one editor for both for convenience.
There are some other editors which are able to autocomplete both Python and C++ (including free ones, even more - including Scintilla-based, e.g. SciTE), so we're just evaluating C::B - can it be usable for us.
For now, C::B doesn't look very promising as it lacks very basic features (e.g. non-modal search/replace, incremental search, auto-complete for Python and highlighting for Bash) and the future of these features it unclear.