pip install jupyter_contrib_nbextensions
jupyter contrib nbextension install --user

pip install jupyter_nbextensions_configurator
jupyter nbextensions_configurator enable --user
#执行完成以上命令后，就可以启动服务，添加拓展了
#如果卸载则执行以下命令
pip uninstall jupyter_contrib_nbextensions
pip uninstall jupyter_nbextensions_configurator