Error: Module not found YARP when i try to use it using python 3.11

[16239014]

I will describe what i did from start:

1. I did source install in robsub envoirment unsing Conda forge. steps i follow (https://github.com/robotology/robotology-superbuild/blob/master/doc/conda-forge.md#binary-installation)

2. Then i install this example in same robsub (https://icub-tech-iit.github.io/documentation/sw_installation/check_your_installation/#check-icub) i run on gazebo.

3. Then in last i install python 3.11.7 and using spyder 5.5.4 in robsub and try to run this code https://robotology.github.io/robotology-documentation/doc/html/icub_python_basic_motor.html

ERROR LOG:

runfile('/home/sohail/Desktop/python folder for thesis/untitled0.py', wdir='/home/sohail/Desktop/python folder for thesis')
Traceback (most recent call last):

  File ~/anaconda3/envs/robsub/lib/python3.11/site-packages/spyder_kernels/py3compat.py:356 in compat_exec
    exec(code, globals, locals)

  File ~/Desktop/python folder for thesis/untitled0.py:2
    import yarp

ModuleNotFoundError: No module named 'yarp' 

[traversaro]

If you type python -c "import yarp" from the command line in which the robsub environment is activated and in which you sourced the setup.sh script of the robotology-superbuild what happens? If that works, the problem is probably spyder-specific and it may be more useful to ask support in spyder-related channels.

[16239014]

i did what you told python -c "import yarp" but i get same error no module name yarp

you can see step i follow maybe i did something wrong

Error log:

(base) sohail@sohail-Lenovo-V14-G3-IAP:~$ conda activate robsub
(robsub) sohail@sohail-Lenovo-V14-G3-IAP:~$ source /home/sohail/robotology-superbuild/build/install/share/robotology-superbuild/setup.sh
(robsub) sohail@sohail-Lenovo-V14-G3-IAP:~$ python -c "import yarp"
Traceback (most recent call last):
  File "<string>", line 1, in <module>
ModuleNotFoundError: No module named 'yarp'

[traversaro]

Thanks, can you report the content of PYTHONPATH env variable after you call source /home/sohail/robotology-superbuild/build/install/share/robotology-superbuild/setup.sh, i.e. :

echo $PYTHONPATH

Are you sure that you enabled the ROBOTOLOGY_USES_PYTHON=ON CMake option of the robotology-superbuild?

[16239014]

content of pyhtonpath:

(robsub) sohail@sohail-Lenovo-V14-G3-IAP:~$ echo $PYTHONPATH
/home/sohail/robotology-superbuild/build/install/lib/python3.11/site-packages

Are you sure that you enabled the ROBOTOLOGY_USES_PYTHON=ON CMake option of the robotology-superbuild?

Yes i enable this

[traversaro]

Can you check the content of /home/sohail/robotology-superbuild/build/install/lib/python3.11/site-packages and of /home/sohail/robotology-superbuild/build/install/lib/python3.11/dist-packages ?

[16239014]

Can you check the content of /home/sohail/robotology-superbuild/build/install/lib/python3.11/site-packages and of /home/sohail/robotology-superbuild/build/install/lib/python3.11/dist-packages ?

there no folder in lib named as python3.11.

[traversaro]

Interesting, can you report the /home/sohail/robotology-superbuild/build/src/YARP/install_manifest.txt and /home/sohail/robotology-superbuild/build/src/YARP/CMakeCache.txt files? Thanks!

[16239014]

Those files you asked for were too large, so I attached them:

Interesting, can you report the /home/sohail/robotology-superbuild/build/src/YARP/install_manifest.txt install_manifest.txt

/home/sohail/robotology-superbuild/build/src/YARP/CMakeCache.txt CMakeCache.txt

[traversaro]

Did you enable the ROBOTOLOGY_USES_PYTHON superbuild CMake option?

[16239014]

Did you enable the ROBOTOLOGY_USES_PYTHON superbuild CMake option?

[traversaro]

That is quite strange, in YARP's CMakeCache.txt you have CREATE_PYTHON:INTERNAL=OFF, but that variable should be set to ON by robotology-superbuild. Can you run make YARP in the build of the superbuild and try again? Something really strange is happening.

[16239014]

@traversaro After runmakein build of superbuild i found python3.11 folder in lib. I know you asked for make yarp

Output:

(robsub) sohail@sohail-Lenovo-V14-G3-IAP:~/robotology-superbuild/build$ make yarp
make: *** No rule to make target 'yarp'.  Stop.

can you report the /home/sohail/robotology-superbuild/build/src/YARP/install_manifest.txt and /home/sohail/robotology-superbuild/build/src/YARP/CMakeCache.txt files?

I DONT KNOW HOW TO REPORT IT SO ATTACH SCREENSHOT

[16239014]

@traversaro i think you forgot to reply??

[traversaro]

Sorry, I asked to run make YARP, not make yarp, can you try and report the output?

[16239014]

Sorry, I asked to run make YARP, not make yarp, can you try and report the output?

sorry for late response, Build target YARP 100% but still error in spyder occur: module not found error : no module named 'yarp'

[traversaro]

Ok, can you please report the CMakeCache.txt and install_manifest.txt after you run make YARP . python -c "import yarp" still fails? Let's try to fix this before trying to get it to work in spyder

[16239014]

Ok, can you please report the CMakeCache.txt and install_manifest.txt after you run make YARP Files Are: CMakeCache.txt install_manifest.txt

python -c "import yarp" still fails? Let's try to fix this before trying to get it to work in spyder.

1. First i activated the environment.
2. then source it
3. run yarpserver
4. In new terminal again i activated environment and sourcing then i run the command you said python -c "import yarp it stuck here for more than 30 minutes

[traversaro]

You need to run python -c "import yarp", not python -c "import yarp.

[16239014]

You need to run python -c "import yarp", not python -c "import yarp.

With sourcing nothing happen it just go to next line

Without sourcing it show error:

(robsub) sohail@sohail-Lenovo-V14-G3-IAP:~$ python -c "import yarp"
Traceback (most recent call last):
  File "<string>", line 1, in <module>
ModuleNotFoundError: No module named 'yarp'

[traversaro]

If you do not get any error, it means that yarp is found correctly. I am not sure how to make Spyder use superbuild's yarp.

[traversaro]

Looking on Google, you could:

• Make sure that you start spyder from the robsub environment and in a terminal in which you sourced the setup.sh of the robotology-superbuild
• Make sure that spyder is using the python executable of the robsub environment, see https://docs.spyder-ide.org/current/faq.html#using-existing-environment for more details. I guess it should be ~/anaconda3/envs/robsub/bin/python .