Error running filter pandoc_filter.py

[prtome]

Describe the bug
I just run jupyter nbconvert --execute --to=docx TOTO.ipynb --output toto.docx

and I obtain the following Traceback

[NbConvertApp] Converting notebook TOTO.ipynb to docx
Traceback (most recent call last):
File "/Library/Frameworks/Python.framework/Versions/3.10/bin/jupyter-nbconvert", line 8, in
sys.exit(main())
File "/Library/Frameworks/Python.framework/Versions/3.10/lib/python3.10/site-packages/jupyter_core/application.py", line 264, in launch_instance
return super(JupyterApp, cls).launch_instance(argv=argv, **kwargs)
File "/Library/Frameworks/Python.framework/Versions/3.10/lib/python3.10/site-packages/traitlets/config/application.py", line 846, in launch_instance
app.start()
File "/Library/Frameworks/Python.framework/Versions/3.10/lib/python3.10/site-packages/nbconvert/nbconvertapp.py", line 361, in start
self.convert_notebooks()
File "/Library/Frameworks/Python.framework/Versions/3.10/lib/python3.10/site-packages/nbconvert/nbconvertapp.py", line 533, in convert_notebooks
self.convert_single_notebook(notebook_filename)
File "/Library/Frameworks/Python.framework/Versions/3.10/lib/python3.10/site-packages/nbconvert/nbconvertapp.py", line 498, in convert_single_notebook
output, resources = self.export_single_notebook(notebook_filename, resources, input_buffer=input_buffer)
File "/Library/Frameworks/Python.framework/Versions/3.10/lib/python3.10/site-packages/nbconvert/nbconvertapp.py", line 427, in export_single_notebook
output, resources = self.exporter.from_filename(notebook_filename, resources=resources)
File "/Library/Frameworks/Python.framework/Versions/3.10/lib/python3.10/site-packages/nbconvert/exporters/exporter.py", line 190, in from_filename
return self.from_file(f, resources=resources, **kw)
File "/Library/Frameworks/Python.framework/Versions/3.10/lib/python3.10/site-packages/nbconvert/exporters/exporter.py", line 208, in from_file
return self.from_notebook_node(nbformat.read(file_stream, as_version=4), resources=resources, **kw)
File "/Library/Frameworks/Python.framework/Versions/3.10/lib/python3.10/site-packages/jupyter_docx_bundler/init.py", line 79, in from_notebook_node
converters.notebookcontent_to_docxbytes(
File "/Library/Frameworks/Python.framework/Versions/3.10/lib/python3.10/site-packages/jupyter_docx_bundler/converters.py", line 298, in notebookcontent_to_docxbytes
pypandoc.convert_file(
File "/Library/Frameworks/Python.framework/Versions/3.10/lib/python3.10/site-packages/pypandoc/init.py", line 150, in convert_file
return _convert_input(source_file, format, 'path', to, extra_args=extra_args,
File "/Library/Frameworks/Python.framework/Versions/3.10/lib/python3.10/site-packages/pypandoc/init.py", line 351, in _convert_input
raise RuntimeError(
RuntimeError: Pandoc died with exitcode "83" during conversion: Error running filter /Library/Frameworks/Python.framework/Versions/3.10/lib/python3.10/site-packages/jupyter_docx_bundler/pandoc_filter.py:
Could not find executable python

PYTHON is python3 - does jupyter-docx-bundler need a specific alias for python?

Desktop (please complete the following information):

• OS: MACOSX 12.3.1
• Browser safari
• Versions of Python Python 3.10.2
  all packages installed in march/april
• Pandoc version pandoc --version
  Pandoc 2.17.1.1
  Compiled with pandoc-types 1.22.1, texmath 0.12.4, skylighting 0.12.2,
  citeproc 0.6.0.1, ipynb 0.2

Additional context
pandoc TOTO.ipynb -s -o new_word_file.docx works perfectly

[m-rossi]

jupyter-docx-bundler currently does not support pandoc versions above 2.13. There may be some issues. I started some development in #76.

However, this should not have anything to do with not finding python. It is even not clear to me why it tries. I will try to reproduce it and report back.

[m-rossi]

@prtome I am unable to reproduce this error (also on macOS). Can you provide some details on the installed versions

• pypandoc
• pandocfilters
• nbconvert

If I understand the mechanisms of pancdocfilters correctly, pandoc calls python internally. So it seems like pandoc cannot find the python executable. which python gives you a result?

[prtome]

pypandoc: 1.7.2
pandocfilters: 1.5.0
nbconvert: 6.4.1

jupyter --version
Selected Jupyter core packages...
IPython : 8.0.1
ipykernel : 6.8.0
ipywidgets : 7.6.5
jupyter_client : 7.1.2
jupyter_core : 4.9.1
jupyter_server : 1.13.4
jupyterlab : not installed
nbclient : 0.5.10
nbconvert : 6.4.1
nbformat : 5.1.3
notebook : 6.4.8
qtconsole : 5.2.2
traitlets : 5.1.1

I am quite new to notebooks - i have done all the installations (Jupiter, pandoc etc, even the latest python, latex) in march/april.

which python gives no result
but which python3 says
/Library/Frameworks/Python.framework/Versions/3.10/bin/python3

i have aliased python to python3
$ type python
python is aliased to `python3'

The last update of macOS (12.3.1) got rid of the python2 installation from apple, so now the python3 is the only one.
As i say if i use pandoc directly to convert to docx it works without problem. I have no idea how/which filter to use on pandoc to try from the command line to see if there is a problem there - i am a newbie on this
thanks

[m-rossi]

which python gives no result

This may be a problem. I dig into to the pandoc source code and found the following line: https://github.com/jgm/pandoc/blob/b7a44f9d19f547374445bbc0b44e4dfbbca1dca0/src/Text/Pandoc/Filter/JSON.hs#L52 Seems like it is calling python instead of python3. If you make the python command working, this may fix your issue.

As i say if i use pandoc directly to convert to docx it works without problem. I have no idea how/which filter to use on pandoc to try from the command line to see if there is a problem there

pandoc added native support for *.ipynb files a few versions ago. jupyter-docx-bundler does some additional things, like adding-metadata, hiding-inputs-or-complete-code-cells and pandas-html-table-conversion (although this broke with the recent versions). So calling pandoc directly and using jupyter-docx-bundler does something different although both approaches use pandoc under the hood.

[prtome]

I like jupyter-docx-bundler because i want to hide the source code - not having to manually delete it everytime. so I will find out ow to make which work.
The python command works since it is aliased to python3
python --version
Python 3.10.2

but which does not work - i will try to find out what is going on. Thanks

[prtome]

I found out - here is what happens. There is no more /usr/bin/python - it was symlinked to python2
What I have done: symlink python to python3 in /usr/local/bin
now which python works
and of course jupyter-docx-bundler also and does exactly what I wanted.
thanks a lot !

[m-rossi]

Glad, you figured it out