This is the gr-cariboulite package. It is interfaces to the CaribouLite library, which supports driver modules for many types of SDR hardware. The Python namespace is in gnuradio.cariboulite, which would be normally imported as: from gnuradio import cariboulite See the Doxygen documentation for details about the blocks available in this package. A quick listing of the details can be found in Python after importing by using: help(cariboulite)