Description

I installed the Jupyter Code Editor extension via the Isaac Sim CLI, which worked as expected. However when I try to change the notebook directory via --/exts/isaacsim.code_editor.jupyter/notebook_dir or the 'extension.toml' file, I get the below log statements:

File ".../.venv/lib/python3.11/site-packages/isaacsim/exts/isaacsim.code_editor.jupyter/data/launchers/jupyter_launcher.py", line 130, in <module>
    argv = app_dir + [token] + [notebook_dir] + argv[4].split(" ")
                                ^^^^^^^^^^^^
NameError: name 'notebook_dir' is not defined

This error prevents the Jupyter Code Editor extension from starting

Solution

Add the bottom 2 lines to IsaacSim/source/extensions/isaacsim.code_editor.jupyter/data/launchers/jupyter_launcher.py, line 109:

    # get notebook_dir
    if not argv[3]:
        notebook_dir = os.path.abspath(os.path.join(SCRIPT_DIR, "..", "notebooks"))
        notebook_dir = "--notebook-dir={}".format(notebook_dir)
    else:
        notebook_dir = argv[3]

Without the else statement, the notebook_dir variable is undefined when defining a notebook_dir via the CLI or extension.toml file, as argv[3] exists. This change was tested locally and allows for changing the Jupyter Notebook directory.

Isaac Sim version

5.0.0

Operating System (OS)

Ubuntu 24.04.3

GPU Name

RTX 3090 Ti

GPU Driver and CUDA versions

Driver Version: 570.172 Cuda: 12.8

Logs

File ".../.venv/lib/python3.11/site-packages/isaacsim/exts/isaacsim.code_editor.jupyter/data/launchers/jupyter_launcher.py", line 130, in <module>
    argv = app_dir + [token] + [notebook_dir] + argv[4].split(" ")
                                ^^^^^^^^^^^^
NameError: name 'notebook_dir' is not defined

Additional information