ValueError: too many values to unpack (expected 3) #1343

alex · 2022-09-24T22:20:09Z

Traceback (most recent call last):
  File "/home/runner/work/cryptography/cryptography/.tox/docs/lib/python3.10/site-packages/sphinx/builders/html/__init__.py", line 1096, in handle_page
    output = self.templates.render(templatename, ctx)
  File "/home/runner/work/cryptography/cryptography/.tox/docs/lib/python3.10/site-packages/sphinx/jinja2glue.py", line 194, in render
    return self.environment.get_template(template).render(context)
  File "/home/runner/work/cryptography/cryptography/.tox/docs/lib/python3.10/site-packages/jinja2/environment.py", line 1301, in render
    self.environment.handle_exception()
  File "/home/runner/work/cryptography/cryptography/.tox/docs/lib/python3.10/site-packages/jinja2/environment.py", line 936, in handle_exception
    raise rewrite_traceback_stack(source=source)
  File "/home/runner/work/cryptography/cryptography/.tox/docs/lib/python3.10/site-packages/sphinx/themes/basic/page.html", line 10, in top-level template code
    {%- extends "layout.html" %}
  File "/home/runner/work/cryptography/cryptography/.tox/docs/lib/python3.10/site-packages/sphinx_rtd_theme/layout.html", line 13, in top-level template code
    {%- set (_ver_major, _ver_minor, _ver_bugfix) = sphinx_version.split('.') | map('int') -%}
ValueError: too many values to unpack (expected 3)

The above exception was the direct cause of the following exception:

Traceback (most recent call last):
  File "/home/runner/work/cryptography/cryptography/.tox/docs/lib/python3.10/site-packages/sphinx/cmd/build.py", line 279, in build_main
    app.build(args.force_all, filenames)
  File "/home/runner/work/cryptography/cryptography/.tox/docs/lib/python3.10/site-packages/sphinx/application.py", line 350, in build
    self.builder.build_update()
  File "/home/runner/work/cryptography/cryptography/.tox/docs/lib/python3.10/site-packages/sphinx/builders/__init__.py", line 302, in build_update
    self.build(to_build,
  File "/home/runner/work/cryptography/cryptography/.tox/docs/lib/python3.10/site-packages/sphinx/builders/__init__.py", line 368, in build
    self.write(docnames, list(updated_docnames), method)
  File "/home/runner/work/cryptography/cryptography/.tox/docs/lib/python3.10/site-packages/sphinx/builders/__init__.py", line 563, in write
    self._write_serial(sorted(docnames))
  File "/home/runner/work/cryptography/cryptography/.tox/docs/lib/python3.10/site-packages/sphinx/builders/__init__.py", line 573, in _write_serial
    self.write_doc(docname, doctree)
  File "/home/runner/work/cryptography/cryptography/.tox/docs/lib/python3.10/site-packages/sphinx/builders/html/__init__.py", line 672, in write_doc
    self.handle_page(docname, ctx, event_arg=doctree)
  File "/home/runner/work/cryptography/cryptography/.tox/docs/lib/python3.10/site-packages/sphinx/builders/html/__init__.py", line 1103, in handle_page
    raise ThemeError(__("An error happened in rendering the page %s.\nReason: %r") %
sphinx.errors.ThemeError: An error happened in rendering the page api-stability.

this appears to have been caused by the latest sphinx being version 5.2.0.post0

https://github.com/pyca/cryptography/actions/runs/3119261059/jobs/5060248154

The text was updated successfully, but these errors were encountered:

WizardCM · 2022-09-25T00:10:26Z

Confirmed. Occurs on Sphinx v5.2.0.post0

writing output... [  2%] backend-design

Traceback (most recent call last):
  File "/home/wizardcm/.local/lib/python3.8/site-packages/sphinx/builders/html/__init__.py", line 1096, in handle_page
    output = self.templates.render(templatename, ctx)
  File "/home/wizardcm/.local/lib/python3.8/site-packages/sphinx/jinja2glue.py", line 194, in render
    return self.environment.get_template(template).render(context)
  File "/home/wizardcm/.local/lib/python3.8/site-packages/jinja2/environment.py", line 1301, in render
    self.environment.handle_exception()
  File "/home/wizardcm/.local/lib/python3.8/site-packages/jinja2/environment.py", line 936, in handle_exception
    raise rewrite_traceback_stack(source=source)
  File "/home/wizardcm/.local/lib/python3.8/site-packages/sphinx/themes/basic/page.html", line 10, in top-level template code
    {%- extends "layout.html" %}
  File "/home/wizardcm/.local/lib/python3.8/site-packages/sphinx_rtd_theme/layout.html", line 13, in top-level template code
    {%- set (_ver_major, _ver_minor, _ver_bugfix) = sphinx_version.split('.') | map('int') -%}
ValueError: too many values to unpack (expected 3)

The above exception was the direct cause of the following exception:

Traceback (most recent call last):
  File "/home/wizardcm/.local/lib/python3.8/site-packages/sphinx/cmd/build.py", line 279, in build_main
    app.build(args.force_all, filenames)
  File "/home/wizardcm/.local/lib/python3.8/site-packages/sphinx/application.py", line 350, in build
    self.builder.build_update()
  File "/home/wizardcm/.local/lib/python3.8/site-packages/sphinx/builders/__init__.py", line 302, in build_update
    self.build(to_build,
  File "/home/wizardcm/.local/lib/python3.8/site-packages/sphinx/builders/__init__.py", line 368, in build
    self.write(docnames, list(updated_docnames), method)
  File "/home/wizardcm/.local/lib/python3.8/site-packages/sphinx/builders/__init__.py", line 563, in write
    self._write_serial(sorted(docnames))
  File "/home/wizardcm/.local/lib/python3.8/site-packages/sphinx/builders/__init__.py", line 573, in _write_serial
    self.write_doc(docname, doctree)
  File "/home/wizardcm/.local/lib/python3.8/site-packages/sphinx/builders/html/__init__.py", line 672, in write_doc
    self.handle_page(docname, ctx, event_arg=doctree)
  File "/home/wizardcm/.local/lib/python3.8/site-packages/sphinx/builders/html/__init__.py", line 1103, in handle_page
    raise ThemeError(__("An error happened in rendering the page %s.\nReason: %r") %
sphinx.errors.ThemeError: An error happened in rendering the page backend-design.
Reason: ValueError('too many values to unpack (expected 3)')

Theme error:
An error happened in rendering the page backend-design.
Reason: ValueError('too many values to unpack (expected 3)')

https://github.com/obsproject/obs-studio/actions/runs/3120097770/jobs/5060455218

This should be reverted once sphinx_rtd_theme is updated. See readthedocs/sphinx_rtd_theme#1343

danielrobbins · 2022-09-25T02:45:44Z

I have triaged this issue -- please see https://bugs.funtoo.org/browse/FL-10533

The short summary is that the following line in sphinx_rtd_theme assumes that the sphinx version can be split into 3 parts. This is not true with 5.2.0.post0. The relevant line in the traceback is:

File "/usr/lib/python3.7/site-packages/sphinx_rtd_theme/layout.html", line 13, in top-level template code
{%- set (_ver_major, _ver_minor, _ver_bugfix) = sphinx_version.split('.') | map('int') -%}
ValueError: too many values to unpack (expected 3)

pypi supports different types of versions besides x.y.z. It is best to parse the version using a more robust version parsing such as packaging.version.Version class.

workaround for readthedocs/sphinx_rtd_theme#1343

Sphinx 5.2.0.post0 release has a known compatibility issue with the `sphinx_rtd_theme` (see the issue readthedocs/sphinx_rtd_theme#1343). Revert this commit once this compatibility issue is resolved. Signed-off-by: Stephanos Ioannidis <root@stephanos.io>

Readthedocs uses incorrect version parsing, which is not compatible with current sphinx version, see readthedocs/sphinx_rtd_theme#1343. Implemented workaround until this issue is fixed.

Sphinx 5.2.0.post0 release has a known compatibility issue with the `sphinx_rtd_theme` (see the issue readthedocs/sphinx_rtd_theme#1343). Revert this commit once this compatibility issue is resolved. Signed-off-by: Stephanos Ioannidis <root@stephanos.io>

- A four-part version fails with sphinx_rtd_theme: readthedocs/sphinx_rtd_theme#1343 While this is a problem with sphinx_rtd_theme, the easiest solution is to limit Sphinx version (sphinx_rtd_theme updates *slowly*) - This should be reverted after either sphinx releases again with a more normal version number, or sphinx_rtd_theme updates. - Review: see if CI passes

rkdarst · 2022-09-25T09:38:54Z

Workaround in a project's requirements (as is being done by others in the references above):

sphinx!=5.2.0.post0    # remove after next release

It would be best if sphinx_rtd_theme releases with the fix in #1344, but another workaround is sphinx releasing with a 3-part version number. Or every project does the above, which is definitely not good.

This patch temporarily restricts the Sphinx version since the latest one causes trouble with `sphinx_rtd_theme`. This should be reverted once that bug is fixed in the theme. See: readthedocs/sphinx_rtd_theme#1343

sphinx-doc/sphinx#10860 readthedocs/sphinx_rtd_theme#1343

The sphinx doc build run by CircleCI is currently failing: ``` make: Entering directory '/home/circleci/wayback/docs' Traceback (most recent call last): File "/home/circleci/venv/bin/sphinx-build", line 5, in <module> from sphinx.cmd.build import main File "/home/circleci/venv/lib/python3.8/site-packages/sphinx/cmd/build.py", line 25, in <module> from sphinx.application import Sphinx File "/home/circleci/venv/lib/python3.8/site-packages/sphinx/application.py", line 42, in <module> from sphinx.registry import SphinxComponentRegistry File "/home/circleci/venv/lib/python3.8/site-packages/sphinx/registry.py", line 24, in <module> from sphinx.builders import Builder File "/home/circleci/venv/lib/python3.8/site-packages/sphinx/builders/__init__.py", line 26, in <module> from sphinx.util import import_object, logging, rst, progress_message, status_iterator File "/home/circleci/venv/lib/python3.8/site-packages/sphinx/util/rst.py", line 22, in <module> from jinja2 import environmentfilter ImportError: cannot import name 'environmentfilter' from 'jinja2' (/home/circleci/venv/lib/python3.8/site-packages/jinja2/__init__.py) make: *** [Makefile:20: html] Error 1 make: Leaving directory '/home/circleci/wayback/docs' Exited with code exit status 2 CircleCI ``` It looks like this might be the result of jinja2 imports being deprecated? sphinx-doc/sphinx#10291 I tried unpinning all the dependencies, and making a few minor changes to the sphinx config and the docs seem to build fine locally but maybe I'm missing some detail about theme/css? Unfortunately I did have to tell pip to ignore sphinx 5.2.0.post0 which appears to have a recent bug that hopefully will be fixed shortly: readthedocs/sphinx_rtd_theme#1343

Signed-off-by: Alexis Jeandet <alexis.jeandet@member.fsf.org>

CreatingNull · 2022-09-25T19:44:38Z

Sphinx is pending a 5.2.1 release, this should resolve the issue (for now).

See readthedocs/sphinx_rtd_theme#1343

Sphinx 5.2.0.post0 release has a known compatibility issue with the `sphinx_rtd_theme` (see the issue readthedocs/sphinx_rtd_theme#1343). Revert this commit once this compatibility issue is resolved. (cherry picked from commit f503847) Original-Signed-off-by: Stephanos Ioannidis <root@stephanos.io> GitOrigin-RevId: f503847 Change-Id: I20e1f285d8dec4eaf549cd55fe0df239a1afa8a9 Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/third_party/zephyr/+/3916773 Reviewed-by: Fabio Baltieri <fabiobaltieri@google.com> Tested-by: Fabio Baltieri <fabiobaltieri@google.com> Tested-by: CopyBot Service Account <copybot.service@gmail.com> Commit-Queue: Fabio Baltieri <fabiobaltieri@google.com>

pelson · 2022-09-27T10:07:21Z

I proposed a fix in #1345.
(posting here for visibility)

This should be reverted once sphinx_rtd_theme is updated. See readthedocs/sphinx_rtd_theme#1343

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ValueError: too many values to unpack (expected 3) #1343

ValueError: too many values to unpack (expected 3) #1343

alex commented Sep 24, 2022

WizardCM commented Sep 25, 2022

danielrobbins commented Sep 25, 2022

rkdarst commented Sep 25, 2022

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CreatingNull commented Sep 25, 2022

pelson commented Sep 27, 2022

ValueError: too many values to unpack (expected 3) #1343

ValueError: too many values to unpack (expected 3) #1343

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