Jupyter Notebook: module not found even after pip install

Question

I have a module installed in my Juyter notebook

!pip install gensim

Requirement already satisfied: gensim in /home/m.gawinecki/virtualenv/la-recoms/lib/python3.7/site-packages (3.8.2)

However, when I try to import it, it fails

import gensim

---------------------------------------------------------------------------
ModuleNotFoundError                       Traceback (most recent call last)
<ipython-input-1-e70e92d32c6e> in <module>
----> 1 import gensim

ModuleNotFoundError: No module named 'gensim'

It looks like it has been installed properly:

!pip list | grep gensim

gensim             3.8.2

How can I fix it?

I think the reason is I am mixing virtualenv with conda, using both `pip install gensim` and `conda install gensim` — dzieciou, Apr 17 '20 at 06:16
@classicdude7 I was calling Jupyter notebook installed via conda, but other dependencies I have installed in my virtualenv. — dzieciou, Apr 17 '20 at 06:20
What helped was `conda deactivate` and the running `jupyter notebook` from active virtualenv. — dzieciou, Apr 17 '20 at 06:26
In Jupiter 6.3.0 I just entered `pip install gensim` and `pip install python-Levenshtein` as per warning in a notebook cell and then `import gensim` in a new cell worked. — stop-cran, May 20 '21 at 13:32

score 12 · Accepted Answer · answered Sep 28 '20 at 15:32

12

Add your virtual environment as Python kernel in this way (Make sure it's activated):

(venv)
$ ipython kernel install --name "local-venv-kernel" --user

Now, you can select the created kernel "local-venv-kernel" when you start Jupyter notebook or lab.

You could check the installed libraries using this code in a notebook cell:

!pip freeze

answered Sep 28 '20 at 15:32

negas

841
12
10

1

Awesome, thanks. Only this solution worked for me in mac. – Karthik Arumugham Jun 10 '21 at 02:23
1

This suggestion https://stackoverflow.com/questions/42321784/jupyter-modulenotfounderror-no-module-named-matplotlib also works, but less intrusive for ongoing updating an existing kernel. – Yu Shen Aug 12 '22 at 21:24
I agree. However, I prefer to keep clearly separated and identified virtual environments. It's a good practice. – negas Aug 14 '22 at 02:37

score 1 · Answer 2 · answered Apr 17 '20 at 06:54

Things that could help:

if using virtualenv / conda or similar python environments: check if you are opening the notebook while being in the correct one. Check your console and activate the right one / deactivate the wrong ones
uninstall and re-install the package thats causing the problem
while installing the package check if other packages that you already had are affected, maybe there is some version problem and you need to remove or change other packages

Jupyter Notebook: module not found even after pip install

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