Sphinx build exception: HtmlFormatter object has no attribute 'get_linenos_style_defs'

[bocklund]

In pycalphad's CI docs builds, I am getting a new (to us) error raised in Furo, but I don't know if this is a Furo issue or upstream issue.

In this [CI build], I get the error on a Sphinx build:

Extension error (furo):
Handler <function _overwrite_pygments_css at 0x7faf5a9329d0> for event 'build-finished' threw an exception (exception: 'HtmlFormatter' object has no attribute 'get_linenos_style_defs')

In our Sphinx config, we are using:

pygments_style = 'default'
pygments_dark_style = "native"

In our previous successful build for the open PR (from 2021-11-08) we had the following requirements (via pip in the install from requirements-dev.txt step):

• furo=2021.10.9
• sphinx=4.2.0
• docutils=0.17.1

In the failing build, the installed versions in that CI build are:

• furo=2021.11.16
• sphinx=4.3.0
• docutils=0.17.1

We didn't make any changes to the docs between the successful and unsuccessful runs that could cause this error. Some other non-docs, package-specific dependencies have changed, but they should be unrelated to this.

Let me know if there's anything that I could do to further reproduce or narrow down the issue.

[pradyunsg]

A smaller self-contained reproducer would be great.

I am unable to reproduce this failure. I just tried building Furo's own docs against 4.3.0 (which, looks like I already had installed). First without the pygments configuration variables and once after, both builds were done with -a which makes Sphinx rebuild everything.

[pradyunsg]

Ah, you've got pygments 2.3.1 -- and I'm using an attribute from 2.7.0+.

[pradyunsg]

Should be fixed by bdcf32e.

[bocklund]

Thank you!

For anyone else running into this, releases furo<=2021.10.09 or (after the fix) furo>2021.11.16 should work.

[chenxuuu]

same issue here, but I found that unless I install pygments==2.11.2 manually, it still give me this error

anyway, this problem is solved

[rdeveen]

I have the same problem,
Furo version > 2022.6.4.1 failed.
Version Furo == 2022.4.7 does work.

[rdeveen]

Can it be this change: 18374b7

[pradyunsg]

Whelp. This looks like I made a mistake!

[ubaldot]

I am running in the same problem. I have furo 2022.6.21 installed through conda-forge .
How to fix it?

[pradyunsg]

Upgrade pygments and that should fix this.

[pradyunsg]

Fixed again, in 2022.09.15 – Pragmatic Pistachio.

[PttCodingMan]

Collecting furo
Downloading furo-2022.9.15-py3-none-any.whl (326 kB)

Extension error (furo):
Handler <function _overwrite_pygments_css at 0x7fa338b5c790> for event 'build-finished' threw an exception (exception: 'HtmlFormatter' object has no attribute 'get_linenos_style_defs')

still happen in version 2022.9.15.

[pradyunsg]

Looking through the discussions, no one has reported this since so I'm gonna go ahead and say this is resolved. :)

Hopefully you were able to resolve this. If not, please open a new discussion! :)

[ubaldot]

Thanks! I added a rocket reaction plus marked as an answer but I didn’t know how to close it at that time. :)

[pradyunsg]

No worries! :)