Some errors happen when importing crocoddyl about crocoddyl HOT 11 CLOSED

@nim65s -- could you update the readme file before releasing the new version of Crocoddyl?

from crocoddyl.

Hi @candyriver,

This might be related to a corrupted installation procedure. Can you provide more details on how you have installed Crocoddyl? Please read again the installation instructions.

from crocoddyl.

I just follow the installation instructions and run the following command in the terminal:

pip install --user crocoddyl

from crocoddyl.

@nim65s is aware with pip installation details. He might need further details to understand your situation.

from crocoddyl.

@candyriver Conda might be your friend conda install -c conda-forge crocoddyl.

from crocoddyl.

@candyriver Conda might be your friend conda install -c conda-forge crocoddyl.

Thanks for your reply！ But sadly it didn't help.

from crocoddyl.

After testing with Python 3.6, the error no longer occurred. This suggests that the issue only affects Python 3.10. I carefully reviewed the installation instructions available on https://github.com/loco-3d/crocoddyl/tree/devel and noticed that in the section labeled "From Debian/Ubuntu packages, with robotpkg", it instructs to set the PYTHONPATH environment variable as follows:
export PYTHONPATH=/opt/openrobots/lib/python3.10/site-packages:$PYTHONPATH
However, upon running apt-cache search robotpkg-py3*, I was unable to find a version of crocoddyl that is compatible with Python 3.10. Upon further investigation, I discovered that the issue is likely caused by the operating system being Ubuntu 18.04.
Maybe the issue could be closed.

from crocoddyl.

@candyriver : we offer multiple installation options. From what I can see here, you tried 2 different:

1. wheel packages downloaded from pypi.org with eg. pip install crocoddyl → Those packages require python >= 3.7, and the crocoddyl one might not be working until #1128 is out
2. deb packages downloaded from robotpkg.org with eg apt install robotpkg-py3*-crocoddyl → Those packages require using the python3 provided by your Debian / Ubuntu installation, so in your 18.04 case only 3.6 will work

@jcarpent also provided a third option through conda. I do not know why this one didn't work for you.

from crocoddyl.

@nim65s Thanks for your attention!
Although the OS system is Ubuntu 18.04, I am using the latest conda environment, so my Python version is 3.10. However, I am still unsure why 'pip install --user crocoddyl' or 'conda install -c conda-forge crocoddyl' did not work for me. It's possible that these methods rely on the system installation, which may explain the issue.

To resolve the error message stating 'ImportError: libboost_chrono.so.1.80.0: cannot open shared object file: No such file or directory', I manually compiled and installed boost_1_80_0. However, this led to another error.

from crocoddyl.

if you are in a conda environment, deb packages installed with apt can't work.

Both pip and conda packages should work, and shouldn't rely on system stuff, but at the moment I think pip wheels are broken for crocoddyl, I'll fix this asap.

from crocoddyl.

Closing this issue as @candyriver find a way to install Crocoddyl. Thanks for providing support, @nim65s and @jcarpent!

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