I was running in anaconda in the root environment following command, found no effect in other environments
1
pip install jupyter_contrib_nbextensions
jupyter contrib nbextension install --user
2.
pip install--user jupyter_nbextensions_configurator
jupyter nbextensions_configurator enable --user
3. The successful installation at http: appears Nbextensions 8888 / tree in: // localhost
Click and check Hinteriand, you can open the code hints feature