ModuleNotFoundError : No module named 'gnuradio'

Question

I am trying to install gr-lora using https://github.com/rpp0/gr-lora on my ubuntu 20.02. I have already installed docker toolbox successfully from the installation section. But then trying testing section it has command $./lora_receive_file_nogui.py which basically is used to test the installation. When I run to run that.py file it showed me error "ModuleNotFoundError: no module named 'gnuradio'. Then I tried to install gnuradio for ubuntu. One of the source also suggested me to use python 2.7 instead of python 3. I tried everything but it's still showing me the same error. Can someone please help me with this?

Answer 1

When I run to run that.py file it showed me error "ModuleNotFoundError: no module named 'gnuradio'.

You need to execute ./lora_receive_file_nogui.py inside the container and not in your host.

I just tested it few times and it mostly work as documented - sometimes on the first run it does not decode anything but on the second run you get few messages. Here is the full output of one of my tests.

$ ./docker_run_grlora.sh 

[root@8c063de13ece apps]# ./lora_receive_file_nogui.py 
[?] Download test LoRa signal to decode? [y/N] y
[+] Downloading https://research.edm.uhasselt.be/probyns/lora/usrp-868.1-sf7-cr4-bw125-crc-0.sigmf-data -> ./example-trace.sigmf-data . . . . . . . . . . . . . . . . . .
[+] Downloading https://research.edm.uhasselt.be/probyns/lora/usrp-868.1-sf7-cr4-bw125-crc-0.sigmf-meta -> ./example-trace.sigmf-meta . .
[+] Configuration: 868.1 MHz, SF 7, CR 4/8, BW 125 kHz, prlen 8, crc on, implicit off
[+] Decoding. You should see a header, followed by 'deadbeef' and a CRC 5 times.
Bits (nominal) per symbol:  3.5
Bins per symbol:    128
Samples per symbol:     1024
Decimation:         8
/root/.gnuradio/prefs/vmcircbuf_default_factory: No such file or directory
vmcircbuf_createfilemapping: createfilemapping is not available
[+] Done
[root@8c063de13ece apps]# ./lora_receive_file_nogui.py 
[+] Skipping download.
[+] Configuration: 868.1 MHz, SF 7, CR 4/8, BW 125 kHz, prlen 8, crc on, implicit off
[+] Decoding. You should see a header, followed by 'deadbeef' and a CRC 5 times.
Bits (nominal) per symbol:  3.5
Bins per symbol:    128
Samples per symbol:     1024
Decimation:         8
 04 90 40 de ad be ef 70 0d
 04 90 40 de ad be ef 70 0d
 04 90 40 de ad be ef 70 0d
 04 90 40 de ad be ef 70 0d
 04 90 40 de ad be ef 70 0d
[+] Done
[root@8c063de13ece apps]# exit
exit

$ docker images rpp0/gr-lora
REPOSITORY          TAG                 IMAGE ID            CREATED             SIZE
rpp0/gr-lora        latest              118b17c9b50d        2 years ago         2.56GB