Hi Robert, Glad to hear it works for you. I thought about your problem, and wondered if I should also give you an explanation on how to fix it permanently. (Until your next GNU Radio update.) It's a simple fix, so I'll describe the steps needed to fix it.
On ubuntu run ... dpkg -L gnuradio | grep util_functions.py (Or if you were on arch like me, run pacman -Ql gnuradio | grep util_functions.py.) This will find the file you need to edit to fix the problem. On my arch system it's /usr/lib/python3.13/site-packages/gnuradio/modtool/tools/util_functions.py Edit this file with your favourite text editor, but you must be root when you edit this file. (So be very careful.) Run ... sudo <editor_name> /usr/lib/python3.13/site-packages/gnuradio/modtool/tools/util_functions.py Go down to line 45 in the file. The line should be ... modified_last = last_line + '\n' Change it to ... modified_last = last_line + newline + '\n' Save and exit the file. The next time you create a python module with gr_modtool, it should work without the need to edit __init__.py. All the best, Chris On Fri, Jan 17, 2025 at 3:20 PM Robert Heerekop <robertheere...@gmail.com> wrote: > > Chris, thanks a lot for taking the time to answer my question. > I understand your explanation and > Yes, your work-a-round works perfectly here and you enabled me to proceed > with my next steps. > > > Op wo 15 jan 2025 om 19:19 schreef Chris Gorman <chrisjohgor...@gmail.com>: >> >> Hi Robert, >> >> There is a bug in gnuradio 3.10.11.0 with the gr_modtool add command. >> It was rewritten and a small code mistake causes the error you're >> experiencing. It has been fixed in the main branch, so the next >> iteration of gnuradio should work as described in the tutorial. >> >> When gr_modtool add is run during the tutorial, it is supposed to edit >> the file ... >> >> python/customModule/__init__.py >> >> and add the line ... >> >> from .addSubSelect import addSubSelect >> >> to __init__.py. >> >> In 3.10.11.0 it doesn't do this. It creates the space for the python >> import, but forgets to add the command. So how to get around this. >> The simplest way is to add the 'from .module_name import module_name' >> line to __init__.py file in the space created near the end of the >> file, under the comment # import any pure python here. Then when you >> go to build the program the build will succeed. I recommend removing >> the build directory and creating a new one before restarting the build >> process. >> >> So make the changes to __init__.py, then from the gr-customModule directory >> ... >> >> rm -rf build >> mkdir build && cd build >> cmake .. >> >> If I recall correctly, this shouldn't affect the building of the C++ >> OOT modules. >> >> Let me know if you run into any more obstacles with this. >> >> Best regards, >> >> Chris >> >> >> >> >> On Tue, Jan 14, 2025 at 5:31 AM Robert Heerekop >> <robertheere...@gmail.com> wrote: >> > >> > Thanks for providing all the documentation and tutorials. >> > They are really usefull for beginners like me. >> > I'm trying to learn and following the tutorials but I got stuck in >> > "Creating Python OOT with gr-modtool" >> > >> > I keep facing the following error message: >> > >> > "AttributeError: module 'gnuradio.customModule' has no attribute >> > 'addSubSelect'" >> > >> > Question: >> > I wonder if I make a mistake or is there something wrong with my (freshly >> > installed) system setup (Ubuntu 24.10 GRC3.10.11.0) ? >> > Thanks in advance for helping me out, guidance, tips or tricks! >> > >> > Robert >> > >> > This is the complete log: >> > <<< Welcome to GNU Radio Companion 3.10.11.0 >>> >> > Block paths: >> > /home/robert/.local/state/gnuradio >> > /usr/share/gnuradio/grc/blocks >> > /usr/local/share/gnuradio/grc/blocks >> > Loading: "/home/robert/My_First-block.grc" >> > >>> Done >> > Loading: "/home/robert/Creating_Python_OOT2.grc" >> > >>> Done >> > Loading: "/home/robert/Creating_Python_OOT.grc" >> > >>> Done >> > Generating: "/home/robert/default.py" >> > Executing: /usr/bin/python3 -u /home/robert/default.py >> > QSocketNotifier: Can only be used with threads started with QThread >> > Traceback (most recent call last): >> > File "/home/robert/default.py", line 186, in <module> >> > main() >> > File "/home/robert/default.py", line 163, in main >> > tb = top_block_cls() >> > ^^^^^^^^^^^^^^^ >> > File "/home/robert/default.py", line 124, in __init__ >> > self.customModule_addSubSelect_0 = customModule.addSubSelect(True) >> > ^^^^^^^^^^^^^^^^^^^^^^^^^ >> > AttributeError: module 'gnuradio.customModule' has no attribute >> > 'addSubSelect' >> > >>> Done (return code 1) >> > >> >
