convert jupyter notebook saved as .HTML file back into .IPYNB

Question

Can I convert a Jupyter Notebook saved as .HTML file back into .IPYNB file? The executable original notebooks were lost. The nbconvert docs don't have anything useful for this case. Currently I have to copy-paste bunch of cells into a new notebook, but this is very tedious and output cells will be lost this way.

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[EDIT]

I found an interactive way to do this using BeautifulSoup:

IPython notebook: Convert an HTML notebook to ipynb

Answer 1

删除了答案尝试，因为 pandoc 只会导致笔记本输入和输出单元的降价表示作为单个笔记本单元。