[Discuss-gnuradio] PMT blobs in Python

[Peter Horvath]

Hi,

can I convert a blob created by my C++ code (unsigned chars) to a Python
list or NumPy array?

pmt.blob_data() returns a 'SwigPyObject' with which I can't do anything.
Passing it to a NumPy array constructor doesn't seem to do the job.

The blobs are in a tuple:
pmt::pmt_t b1 = pmt::make_blob(a, a_length);
pmt::pmt_t b2 = pmt::make_blob(b, b_length);
return pmt::make_tuple(b1, b2);

And I try to check the contents of b1 in QA code like this:
res = my_test_function()
b1 = pmt.blob_data(pmt.tuple_ref(res, 0))
b1_len = pmt.blob_length(pmt.tuple_ref(res, 0))

Thanks,
Peter