Jupyter Notebook 添加目录

参考网址：https://www.cnblogs.com/shuaishuai-it/p/7170343.html

1.  安装 jupyter_contrib_nbextensions
pip install jupyter_contrib_nbextensions

2. 配置 nbextension
jupyter contrib nbextension install --user

3. 启动jupyter notebook
选择 Nbextensions

勾选 Table of Contents