Jupyterhub Notebook doesn't recognize Python modules

Question

I'm trying to run Jupyterhub on a Ubuntu 14.04 VM. I've successfully done this before on a similar Amazon EC2 instance, but for some reason it's not cooperating with me here.

I've installed both the Python 27 and Python 35 Anaconda packages, so I expect to be able to access libraries like matplotlib and numpy.

When I use Python from the command line, I can successfully import matplotlib:

$ python3
>>> import matplotlib
>>> # no error

However, when I try and import matplotlib from an iPython notebook inside of Jupyterhub, I'm told no such module exists:

import matplotlib
-----------------------
ImportError
...
ImportError: No module named 'matplotlib'

Why does Jupyterhub not recognize the module despite my being able to use it through other means?

Is the notebook's kernel the same version as the default Python from your command line? — nitind, Aug 05 '16 at 06:44
@nitind The notebook says "Python 3" kernel. The example holds true if I substitute `python` with `python3`. — Polyov, Aug 05 '16 at 19:30

score 0 · Accepted Answer · answered Aug 05 '16 at 19:43

Fixed myself. I needed to specify a different Python instance in a generated kernel.json file.

To generate the kernel.json file:

sudo anaconda3/bin/ipython kernel install

Then edit it:

sudo nano /usr/local/share/jupyter/kernels/python3/kernel.json

...

{
    "argv": [
        "/PATH/TO/ANACONDA/bin/python",

Jupyterhub Notebook doesn't recognize Python modules

1 Answers1