jupytext转换

利用jupytext进行格式转换：

jupytext --to py notebook.ipynb                 # convert notebook.ipynb to a .py file
jupytext --to notebook notebook.py              # convert notebook.py to an .ipynb file with no outputs
jupytext --to notebook --execute notebook.md    # convert notebook.md to an .ipynb file and run it 
jupytext --update --to notebook notebook.py     # update the input cells in the .ipynb file and preserve outputs and metadata
jupytext --set-formats ipynb,py notebook.ipynb  # Turn notebook.ipynb into a paired ipynb/py notebook
jupytext --sync notebook.ipynb