ModuleNotFoundError: 没有名为“bcolz”的模块

Question

I'm working in the Jupyter Notebook inside a Conda environment.
I've installed bcolz about three different ways but I always get the below screenshot on my notebook page.
When I'm in the environment and type 'Python' or 'Python3' (in other words, go into Python) I can import the module with no problem when typing the same command being given to Jupyter import bcolz .

Specifically, I installed by typing...

conda install -c anaconda bcolz  
pip3 install bcolz  
conda install -c conda-forge bcolz  

and I think I also installed it within some other bundle of modules
*I did a restart to the computer a few times as well.

UPDATE: I just took the import cbolz line out of the utils.py file the notebook was loading and put import cbolz into that cell instead.
Works now, didn't think of doing before. Am still interested in why it doesn't work in the first way.

Answer 1

You are not running your jupyter notebook with the kernel associated with your conda environment. Here is how to do it:

$ source activate my_conda_env
(my_conda_env) $ conda install nb_conda

Then, relaunch the jupyter notebook, and you will normally see my_conda_env in the kernel list. Select it and run this in a cell in your notebook:

import bcolz

Answer 2

Just check if the module is even present in your system.

pip freeze | grep bcolz

or

conda list | grep bcolz

If both the commands return nil, you know you don't have this module installed. So, go ahead and install it by running

conda install -c anaconda bcolz