Which version of python runs the Notebook Server?

[Adam Rule]

I have been trying to help some colleagues install an extension that includes both a server and nb component and have had some trouble when they have more than one version of python, or of the notebook, on their machine.

Is there a way to tell from a notebook which version of python is running the notebook server (not the kernel)? Is there a default? Similarly is there a way to tell from the notebook, which version of the notebook is running? I am imagining something like `which notebook` or `which python` but the default one returned by these in Terminal is not always the same as ends up running the notebook (or so it seems).

[Matthias Bussonnier]

Hello Adam,

IN a running notebook, you can do `help > about` it should display
information about both the running server and current kernel.
The default should be current python executable (IIRC), if you want to
be sure you can do :
python -m notebook
And then you can be sure it starts with the python you referenced.
which jupyter-notebook
can also tell you which script get started.

Does that helps ?
--
M

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[Adam Rule]

Very helpful. Thank you!