Getting error: No module named howto_swig

while building own custom block “square_ff” for Gnuradio 3.7.3, my make
test command was not successful. After checking in detail for the error
with command “ctest -V -R square”, i got an error of “No module named
howto_swig”.
also while doing cmake there was one of the statement “Disabling SWIG
because version check failed”. I tried to troubleshoot be installing or
upgrading SWIG, but it did not solve my error.
ERROR:
/home/abhishek/gnuradio-master/gr-howto/build/DartConfiguration.tcl
Test project /home/abhishek/gnuradio-master/gr-howto/build
Constructing a list of tests
Done constructing a list of tests
Checking test dependency graph…
Checking test dependency graph end
test 2
Start 2: qa_square_ff

2: Test command: /bin/sh
“/home/abhishek/gnuradio-master/gr-howto/build/python/qa_square_ff_test.sh”
2: Test timeout computed to be: 9.99988e+06
2: Traceback (most recent call last):
2: File
“/home/abhishek/gnuradio-master/gr-howto/python/qa_square_ff.py”,
line 24, in
2: import howto_swig as howto
2: ImportError: No module named howto_swig
1/1 Test #2: qa_square_ff …***Failed 0.29 sec

0% tests passed, 1 tests failed out of 1

Total Test time (real) = 0.30 sec

The following tests FAILED:
2 - qa_square_ff (Failed)
Errors while running CTest

Any suggestion will be appreciated
Thanks in advance

Hi Abhishek,
the whole “howto” example introduction is kind of obsolete; I recommend
following the new guided tutorials from
https://gnuradio.org/redmine/projects/gnuradio/wiki/Guided_Tutorials

Greetings,
Marcus