Variable Sink variable_sink from grc_gnuradio import blks2 as grc_blks2 grc_blks2.queue_sink_$(type.fcn)($vlen) grc_blks2.queue_sink_thread(self.$id, set_$(variable)) Type type enum Complex complex fcn:c Float float fcn:f Int int fcn:i Short short fcn:s Byte byte fcn:b Variable variable raw Vec Length vlen 1 int $vlen > 0 in $type $vlen Read samples from the input stream and write each sample to the variable. The variable must be the id of an existing variable block.