操作步骤：
输入命令，执行代码
pip install jupyter_contrib_nbextensions jupyter contrib nbextension install --user pip install jupyter_nbextensions_configurator jupyter nbextensions_configurator enable --user
等待完全100%之后，重新打开Jupyter
设置完成后，再重新打开Jupyter
pip install jupyter_contrib_nbextensions jupyter contrib nbextension install --user pip install jupyter_nbextensions_configurator jupyter nbextensions_configurator enable --user