jupyter-kernel-cloner

What

Copy a sys.prefix kernel resource directory to a user kernel resource directory by name. Any existing user resource directory by that name will be removed and replaced. This copies kernelspecs, not entire conda or virtual environments.

How

clone-jupyter-kernel
    [-h] [--display-name DISPLAY_NAME] [--name NAME] [--yes]
    {kernel-name}

Positional Arguments

Just one, the name of the kernelspec you want to copy. The output of clone-jupyter-kernel --help lists the kernelspecs you can copy.

Optional Arguments

• --help (-h)
  • Show a help message and exit
  • If kernelspecs are detected, includes a list of them
• `--display-name DISPLAY_NAME (-d DISPLAY_NAME)
  • If you want the cloned kernel to have a different display name, use this.
  • By default the original name is used.
• --name NAME (-n NAME)
  • If you want the cloned kernel to have a different name, use this.
  • By default the original name is used.
• --yes (-y)
  • Prevent the 'are you sure' confirmation prompt.
  • Not recommended for... anybody.

What Kernelspecs Can I Clone?

This only looks at the {sys.prefix}/share/jupyter/kernels directory for kernels to clone. The output of clone-jupyter-kernel --help lists the kernelspecs you can copy.

Examples, I Need Examples

To simply clone a kernel-spec:

$ clone-jupyter-kernel python3

This will clone the kernel-spec 'python3' from, say,

/usr/local/share/jupyter/kernels/python3

to

/homes/jovyan/.local/share/jupyter/kernels/python3

Give Me Another Example Immediately

OK, and to clone a kernelspec, but give it a new name and display name too:

$ clone-jupyter-kernel python3 --name=mykernel --display-name=mykernel

This will clone the kernelspec 'python3' from

/usr/local/share/jupyter/kernels/python3

to

/homes/jovyan/.local/share/jupyter/kernels/mykernel

and in the new kernel.json file display_name is set to "mykernel" too.

Thanks

You're welcome!