Jupyter can't find keras' module

Question

I have installed Tensorflow and Keras by Anaconda (on Windows 10), I have created an environment where I am using Python 3.5.2 (the original one in Anaconda was Python 3.6). When I try to execute import keras as ks, I get ModuleNotFoundError: No module named 'keras'.

I have tried to solve this issue by sys.path.append(C:\\Users\\ ... \\Anaconda3\\python.exe)

with both notebook and console, but I continue to get the same error.

How could I solve this issue?

Answer 1

Please try the following:

Run these in the jupyter notebook cell:

import sys

sys.path

sys.executable

It may not be pointing to your virtual environment but to the root

The fix is to install the jupyter notebook from inside your virtual environment

$ . your_env/bin/activate

(your_env)$ python -m pip install jupyter

Now you can import tensorflow or keras

Answer 2

Jupyter uses iPython under the hood, for python. So when you install Jupyter, it will also install iPython. There was one issue when I installed keras and Jupyter: I already have iPython installed in my root Anaconda environment. This is the output after I install Jupyter and keras:

In [2]: import sys; sys.path
Out[2]: 
['/home/user/anaconda3/bin',
 '/home/user/anaconda3/lib/python36.zip',
 '/home/user/anaconda3/lib/python3.6',
 '/home/user/.ipython']

Notice that even though I am inside my conda environment, it still looks for libraries in my root conda environment. And of course keras isn't there.

The step to fix is simply re-activate my environment, with:

source deactivate && source activate [my_env]

Then I am using a correct ipython:

Out[2]: 
['/home/user/anaconda3/envs/ml3/bin',
 '/home/user/anaconda3/envs/ml3/lib/python36.zip',
 '/home/user/anaconda3/envs/ml3/lib/python3.6',
 '/home/user/.ipython']