File Source gr_file_source from gnuradio import gr gr.file_source($type.size*$vlen, $file, $repeat) File file file_open Output Type type enum Complex complex size:gr.sizeof_gr_complex Float float size:gr.sizeof_float Int int size:gr.sizeof_int Short short size:gr.sizeof_short Byte byte size:gr.sizeof_char Repeat repeat True enum Yes True No False Vec Length vlen 1 int $vlen > 0 out $type $vlen