ompl_app.py outputs ModuleNotFoundError: No module named 'ompl.base._base'

[IEI245MU5]

ompl_app.py outputs ModuleNotFoundError: No module named 'ompl.base._base'

[zkingston]

It appears that everything was found appropriate for your Python installation. Rather than using the downloaded source, could you clone the repo at the current main branch and try to rebuild? There were some previously noted issues with Python binding compilation.

[IEI245MU5]

Thank you for the response,

I tried to build the cloned repo, but encountered this issue when calling cmake

kaiwen@kaiwen-MS-7A68:~/Downloads/omplapp/build/Release$ cmake ../..
-- Build type: Release
CMake Error at CMakeLists.txt:25 (include):
  include could not find load file:

    CompilerSettings


CMake Error at CMakeLists.txt:26 (include):
  include could not find load file:

    OMPLUtils


CMake Error at CMakeLists.txt:83 (find_boost_python):
  Unknown CMake command "find_boost_python".


-- Configuring incomplete, errors occurred!
See also "/home/kaiwen/Downloads/omplapp/build/Release/CMakeFiles/CMakeOutput.log".

[zkingston]

Did you clone the repo with submodules? Failure to find those cmake modules means you probably cloned the omplapp repo without the sub-ompl module, do a git submodule update --init --recursive in the omplapp directory and try again.

[IEI245MU5]

Hi, thank you that was the issue with building the repo.

I was now able to build the repo successfully, but I still face the same issue as before:

~/Downloads/omplapp/gui$ ./ompl_app.py 
Traceback (most recent call last):
  File "./ompl_app.py", line 58, in <module>
    from ompl import base as ob
  File "/home/kaiwen/Downloads/omplapp/ompl/py-bindings/ompl/base/__init__.py", line 2, in <module>
    from ompl.base._base import *
ModuleNotFoundError
[CMakeCache.txt](https://github.com/ompl/ompl/files/11430961/CMakeCache.txt)
: No module named 'ompl.base._base'

I have attached the CMakeCache.txt

[zkingston]

Did you run make update_bindings successfully?

[IEI245MU5]

Yes, it finished without errors, although there were some warnings for developers and some optional packages were not found.

[zkingston]

Can you check the output of the build directory to confirm if the pypp.* files were generated? This should be in, e.g., build/py-bindings/bindings/util. If there are the pypp.{cpp,hpp} files, then you might need to just run make again. If not, then the binding process failed.

[IEI245MU5]

The build/Release/py-bindings/bindings directory is empty except an app.h file.

A bunch of .pypp.* files were generated in other directories like build/Release/ompl/py-bindings/bindings/util though.

I have attached the output of make update_bindings:
make update bings output.txt

[zkingston]

Go into the ompl subdirectory and checkout the current main branch, this error has been fixed by more recent commits, specifically by #980

[IEI245MU5]

That worked out. Thank you!