ModuleNotFoundError: No module named 'yellowbrick'

When trying to run 01_machine_learning_workflow.ipynb, I am getting the following error:

ModuleNotFoundError                       Traceback (most recent call last)
<ipython-input-5-3d5d80316307> in <module>
     16 from sklearn.pipeline import Pipeline
     17 from sklearn.metrics import make_scorer
---> 18 from yellowbrick.model_selection import ValidationCurve, LearningCurve

ModuleNotFoundError: No module named 'yellowbrick'

this is unexpected because yellowbrick is alerady installed:

(ml4t) C:\Users\tsfer>pip install yellowbrick
Requirement already satisfied: yellowbrick in c:\users\....

I am attempting to run the notebook via the ml4t environment using the associated jupyter notebook which is running the “Python 3.5 (env_alphatools_stable)” kernal (Windows 10)


I am still getting the ModuleNotFoundError after attempting:

conda install -c districtdatalabs yellowbrick


I noticed I can load the yellowbrick library in Spyder with no problems, so the issue has to do with Jupyter notebook (both are from within my ml4t conda env)