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Problem :

I installed python3 and jupyter notebook using pip3 in MacOs 10.9.
When I try to run the widget it gives error that there is no javascript widget as below
widget javascript not detected. it may not be installed or enabled properly.
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1 Answer

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Solution :

To solve the issue i used the following commands successfully with Jupyter, Mac OS, Python 3.6, and Anaconda. 

conda install -c conda-forge ipywidgets
jupyter nbextension enable --py widgetsnbextension

Further Readings:

https://github.com/jupyter/notebook/issues/2764

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