Hi Brian, thanks for working on this package. May I suggest to rename the source package to python-bitstruct as it seems to be the (unofficial) convention for Python-only library.
FYI, we already have python-bitarray and python-bitstring available in the archive. Perhaps, it would be nice to emphasize what makes this library different for the other two, although I understand that the motivation behind this packaging effort is to satisfy a Build-Depends. Cheers, Ghis