AttributeError: 'property' object has no attribute 'expandtabs'

[cddouma-arm]

Describe the bug

Since 4.3.0 we see the following while reading the project sources:

[2021-11-11T09:54:58.565Z] Exception occurred: [2021-11-11T09:54:58.565Z] File "<BASE>/venv/lib/python3.7/site-packages/sphinx/util/docstrings.py", line 75, in prepare_docstring [2021-11-11T09:54:58.565Z] lines = s.expandtabs(tabsize).splitlines() [2021-11-11T09:54:58.565Z] AttributeError: 'property' object has no attribute 'expandtabs'

Log attached. version 4.2.0 works fine.

sphinx-err.log

How to Reproduce

I hope the log makes it easy enough to spot the error in the source. If not, let me know and I'll try to make a reproducer that I can share.

Expected behavior

No response

Your project

Screenshots

No response

OS

Linux

Python version

3.7.5

Sphinx version

4.3.0

Sphinx extensions

No response

Extra tools

No response

Additional context

No response

[astafan8]

I got
AttributeError: 'member_descriptor' object has no attribute 'expandtabs'

Traceback (most recent call last):

  File "C:\Miniconda\envs\fridgemonitor\lib\site-packages\sphinx\cmd\build.py", line 280, in build_main
    app.build(args.force_all, filenames)
  File "C:\Miniconda\envs\fridgemonitor\lib\site-packages\sphinx\application.py", line 344, in build
    self.builder.build_update()
  File "C:\Miniconda\envs\fridgemonitor\lib\site-packages\sphinx\builders\__init__.py", line 296, in build_update
    len(to_build))
  File "C:\Miniconda\envs\fridgemonitor\lib\site-packages\sphinx\builders\__init__.py", line 308, in build
    updated_docnames = set(self.read())
  File "C:\Miniconda\envs\fridgemonitor\lib\site-packages\sphinx\builders\__init__.py", line 415, in read
    self._read_serial(docnames)
  File "C:\Miniconda\envs\fridgemonitor\lib\site-packages\sphinx\builders\__init__.py", line 436, in _read_serial
    self.read_doc(docname)
  File "C:\Miniconda\envs\fridgemonitor\lib\site-packages\sphinx\builders\__init__.py", line 476, in read_doc

Environment:

Jinja2-3.0.3 
MarkupSafe-2.0.1 
Pygments-2.10.0 
Send2Trash-1.8.0 
Sphinx-4.3.0 
alabaster-0.7.12 
argcomplete-1.12.3 
argon2-cffi-21.1.0 
babel-2.9.1 
backcall-0.2.0 
bleach-4.1.0 
debugpy-1.5.1 
decorator-5.1.0 
defusedxml-0.7.1 
docutils-0.17.1 
entrypoints-0.3 
imagesize-1.3.0 
importlib-resources-5.4.0 
ipykernel-6.5.1 
ipython-7.29.0 
ipython-genutils-0.2.0 
ipywidgets-7.6.5 
jedi-0.18.1
 jsonpointer-2.2 
jsonschema-4.2.1 
jupyter-1.0.0 
jupyter-client-7.1.0 
jupyter-console-6.4.0 
jupyter-core-4.9.1 
jupyterlab-pygments-0.1.2
 jupyterlab-widgets-1.0.2 
matplotlib-inline-0.1.3 
mistune-0.8.4 
nbclient-0.5.9 
nbconvert-6.3.0 
nbformat-5.1.3 
nbsphinx-0.8.7 
nest-asyncio-1.5.1 
notebook-6.4.6 
pandocfilters-1.5.0 
parso-0.8.2 
pickleshare-0.7.5 
prometheus-client-0.12.0 
prompt-toolkit-3.0.22 
pyrsistent-0.18.0 
pywinpty-1.1.6 
pyyaml-6.0 
pyzmq-22.3.0 
qtconsole-5.2.1 
qtpy-1.11.2 
snowballstemmer-2.2.0 
sphinx-jsonschema-1.17.1 
sphinx-rtd-theme-1.0.0 
sphinxcontrib-applehelp-1.0.2 
sphinxcontrib-devhelp-1.0.2 
sphinxcontrib-htmlhelp-2.0.0 
sphinxcontrib-jsmath-1.0.1 
sphinxcontrib-qthelp-1.0.3 
sphinxcontrib-serializinghtml-1.1.5 
terminado-0.12.1 
testpath-0.5.0
 tornado-6.1 
traitlets-5.1.1 
wcwidth-0.2.5 
webencodings-0.5.1 
widgetsnbextension-3.5.2

[tk0miya]

Sorry for the inconvenience. This is already reported as #9879. It will be resolved in the next release v4.3.1 soon.
Thanks,

[cddouma-arm]

Sorry for the inconvenience. This is already reported as #9879. It will be resolved in the next release v4.3.1 soon. Thanks,

Thanks for the update 👍
Out of curiosity, I raised this 9 days before #9879 what made this bug hang around while the other was picked-up? Hoping to get better at reporting defects

[tk0miya]

Sorry for the late response. Simply, I found your report just after #9879.