Cannot run example panda_pick_and_place.py

[Nicholas José Palomo]

I cannot run the panda_pick_and_place.py example.

When running:
python examples/panda_pick_and_place.py

I get the following traceback:

Traceback (most recent call last):
  File "examples/panda_pick_and_place.py", line 8, in <module>
    from gym_ignition.rbd import conversions
ModuleNotFoundError: No module named 'gym_ignition.rbd'

To reproduce:

• I went through the setup/installation instructions here: https://github.com/robotology/gym-ignition
• OS: Ubuntu 18.04.
• Python version: Python 3.6.9 (also tried with Python 3.8.10).
• I can run the cartpole example just fine.

Thanks for all your work on this project. It looks really cool!

[Diego Ferigo]

Hi @nicholaspalomo, thanks for opening this issue. Your Ubuntu version is not currently supported, as reported in our Support Policy.

Regardless, can you try to provide the output of the following commands:

>>> import gym_ignition

>>> from gym_ignition.rbd import conversions

sudo apt-get install tree
tree $(python -c "import gym_ignition, pathlib; print(pathlib.Path(gym_ignition.__file__).parent)")