Re: Problem with Python OOT

George,

I have made several OOT Python blocks with variable numbers of inputs and outputs and while I could very easily be overlooking something the error does not, at first glance, appear to be in the code that you have sent out. Can you send the rest of your yml file (and potentially the rest of the python)? I am curious if there is something missing in either the templates or parameters sections of your yml file.

Tim

On Friday, January 15, 2021, 2:56:48 PM EST, George Edwards <gedwards.eng@gmail.com> wrote:

Hello,

I am trying to make a Python OOT block which accepts a stream of 3 inputs complex valued data and for each single input sample (one on each input line) the block will output 8 complex samples. For my first cut, I am simply trying to get the module to work outputting one complex sample (rather than 8). Below are the essential parts of my program.

1. In the def __init__ (self.), I set the inner method gr.basic_block.__init__(self,

       name="my_block_name_py_cc",

       in_sig = [numpy.complex64, numpy.complex64,  numpy.complex64  ],

       out_sig = [ numpy.complex64 ])       # with 3 inputs and one output

2. In the general_work() method for now I set the output to a constant complex value as follows

      out_items[0][:] = 1.0+1.0*1j

3. In the *.yml file, the input is set as:

        inputs:

        - domain: stream

           dtype: complex

           multiplicity: '3'

The module compiles. However, when I run the QA file, it gives an error stating something is wrong in File "..........blocks_swig1.py at line 8354.

TypeError: in method 'vector_source_c_make', argument 2 of type 'bool'

I went to the file and the line stated, but I have not seen anything to help me make corrections. As far as a TypeError of 'bool', I do not see where I would have made such an error. I have an input parameter in the def __init__(self, start = True) method, 'start', which comes in as bool, but that is the only bool variable I am using. The documentation I read for the method states "This block produces a stream of samples based on an input vector" (which is my goal if I can get it to work).

I will appreciate any help to get me on the right track.

Regards,

George