AssertionError in depart_codearea_latex()

[hakonanes]

Hi, and thanks again for creating and maintaining nbsphinx.

The RTD LaTeX builds of orix (https://beta.readthedocs.org/projects/orix/builds/23890511/) have started throwing an AssertionError in these lines:

nbsphinx/src/nbsphinx/__init__.py

Lines 1870 to 1875 in 53be5e6

	# Sphinx 4.1.0 added "sphinxuseclass" environments around "sphinxVerbatim"
	for begin_verbatim, line in enumerate(lines):
	if line.startswith(r'\begin{sphinxVerbatim}'):
	break
	else:
	assert False

The traceback:

Traceback (most recent call last):
  File "/home/docs/checkouts/readthedocs.org/user_builds/orix/conda/latest/lib/python3.11/site-packages/sphinx/cmd/build.py", line 298, in build_main
    app.build(args.force_all, args.filenames)
  File "/home/docs/checkouts/readthedocs.org/user_builds/orix/conda/latest/lib/python3.11/site-packages/sphinx/application.py", line 355, in build
    self.builder.build_update()
  File "/home/docs/checkouts/readthedocs.org/user_builds/orix/conda/latest/lib/python3.11/site-packages/sphinx/builders/__init__.py", line 290, in build_update
    self.build(['__all__'], to_build)
  File "/home/docs/checkouts/readthedocs.org/user_builds/orix/conda/latest/lib/python3.11/site-packages/sphinx/builders/__init__.py", line 363, in build
    self.write(docnames, list(updated_docnames), method)
  File "/home/docs/checkouts/readthedocs.org/user_builds/orix/conda/latest/lib/python3.11/site-packages/sphinx/builders/latex/__init__.py", line 318, in write
    docwriter.write(doctree, destination)
  File "/home/docs/checkouts/readthedocs.org/user_builds/orix/conda/latest/lib/python3.11/site-packages/docutils/writers/__init__.py", line 80, in write
    self.translate()
  File "/home/docs/checkouts/readthedocs.org/user_builds/orix/conda/latest/lib/python3.11/site-packages/sphinx/writers/latex.py", line 88, in translate
    self.document.walkabout(visitor)
  File "/home/docs/checkouts/readthedocs.org/user_builds/orix/conda/latest/lib/python3.11/site-packages/docutils/nodes.py", line 186, in walkabout
    if child.walkabout(visitor):
       ^^^^^^^^^^^^^^^^^^^^^^^^
  File "/home/docs/checkouts/readthedocs.org/user_builds/orix/conda/latest/lib/python3.11/site-packages/docutils/nodes.py", line 186, in walkabout
    if child.walkabout(visitor):
       ^^^^^^^^^^^^^^^^^^^^^^^^
  File "/home/docs/checkouts/readthedocs.org/user_builds/orix/conda/latest/lib/python3.11/site-packages/docutils/nodes.py", line 186, in walkabout
    if child.walkabout(visitor):
       ^^^^^^^^^^^^^^^^^^^^^^^^
  [Previous line repeated 10 more times]
  File "/home/docs/checkouts/readthedocs.org/user_builds/orix/conda/latest/lib/python3.11/site-packages/docutils/nodes.py", line 199, in walkabout
    visitor.dispatch_departure(self)
  File "/home/docs/checkouts/readthedocs.org/user_builds/orix/conda/latest/lib/python3.11/site-packages/sphinx/util/docutils.py", line 599, in dispatch_departure
    method(node)
  File "/home/docs/checkouts/readthedocs.org/user_builds/orix/conda/latest/lib/python3.11/site-packages/nbsphinx/__init__.py", line 1875, in depart_codearea_latex
    assert False
AssertionError

Versions:

• Sphinx 7.2.6
• nbsphinx 0.9.3

Note that I can't reproduce locally on macOS, so I'm not sure how easy it will be to debug this. I can reproduce this on my Mac. If necessary, I can create a MWE. Any insight from nbsphinx developers would be appreciated.

For reference, we're tracking our issue here: pyxem/orix#475.

[mgeier]

Thanks for the report!

It would be ideal if you could provide a minimal .ipynb file that reproduces the problem.
Even if it's not minimal, it would also help if you could provide a notebook with the code cell outputs.

[hakonanes]

I'm 99% certain this issue results from tqdm compatibility as reported in #776.

This is how the progressbars look in our online docs now (here):

[mgeier]

#776 has been fixed in nbconvert release v7.16.4. Can you please check if that happens to fix your problem as well?

[hakonanes]

I can confirm that using nbconvert 7.16.4 fixed our problem, thanks!