ImportError: No module named IPython.paths when running jupyter notebook?

Question

I installed jupyter via: /usr/local/opt/python/bin/python2.7 -m pip install jupyter

this install ipython version 4.1.2. However, when I run jupyter notebook, I get:

Traceback (most recent call last):
  File "/usr/local/bin/jupyter-notebook", line 7, in <module>
    from notebook.notebookapp import main
  File "/Library/Python/2.7/site-packages/notebook/notebookapp.py", line 83, in <module>
    from IPython.paths import get_ipython_dir
ImportError: No module named IPython.paths

yet, when I run from IPython.paths import get_ipython_dir in the ipython shell directly it works fine. Also when I run /usr/local/opt/python/bin/python2.7 and then the same thing, it runs successfully. Additionally, when I check the sys.executable path in python I get /usr/local/opt/python/bin/python2.7

This doesn't make sense to me. How can Ipython and my normal python (both using /usr/local/opt/python/bin/python2.7) both run this successfully, but my jupyter, installed with that specific python, cannot run the command. Any suggestions?

It appears that for some reason, your jupyter* scripts have the OS X system python in their hash-bang, not your locally installed one. You can either edit the first line in those scripts (check and edit the first line of /usr/local/bin/jupyter-notebook ), or start the scripts explicitly with the correct Python executable. For example: /usr/local/op/python/bin/python2.7 /usr/local/bin/jupyter-notebook. — user707650
– user707650, Commented Mar 22, 2016 at 22:46
Also check for an explicitly set PYTHONPATH environment variable. Since these take priority over the default sys.path, they may cause problems. — user707650
– user707650, Commented Mar 22, 2016 at 22:48
hmm still same error with /usr/local/opt/python/bin/python2.7 /usr/local/bin/jupyter notebook — BigBoy1337
– BigBoy1337, Commented Mar 22, 2016 at 23:08
I'm partly surprised that your python executable lives in /usr/local/opt/...; I think that's a Homebrew thing? Could you check that the relevant site-packages directory (either in /usr/local/lib/python2.7 or in /usr/local/opt/python/lib/pyhton2.7 contains the notebook directory? — user707650
– user707650, Commented Mar 23, 2016 at 1:40
Also, in your normal Python shell, what is sys.path? And outside it, what is PYTHONPATH? — user707650
– user707650, Commented Mar 23, 2016 at 1:41

void · Accepted Answer · 2017-09-01 10:27:12Z

4

I had the same problem. Just now this helped me. Someone might find this useful.

    from IPython.paths import get_ipython_dir
ImportError: No module named IPython.paths

So I was running Python 3 on Linux mint 17. I first uninstalled jupyter from my system using the command.

sudo -H pip3 uninstall jupyter

After successfully uninstalling I installed jupyter again with the following command.

sudo -H pip3 install jupyter

And when I launched jupyter again using

jupyter notebook

The kernel didn't die or didn't restart. Everything works fine now. I hope atleast one person finds this useful.

answered Sep 1, 2017 at 10:27

void

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Comments

chb · Accepted Answer · 2019-05-30 06:41:25Z

0

Upgrade ipython:

pip install ipython==5.3.0

If you cannot uninstall ipython, try this:

sudo -H pip install --ignore-installed -U ipython==5.3.0

edited May 30, 2019 at 6:41

chb

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answered May 30, 2019 at 5:48

joko

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