KeyError trying to make pdf of weasyprint.org

[RosanneZe]

I'm trying to update my Dockerfile to use Weasyprint 53.1. I changed quite a few of the installs and some work around pip dependencies that made version 52 work. It took a bit of trial and error, but I now get no errors during the install. To test my installation I ran the example from the documentation:

 $ weasyprint http://weasyprint.org /tmp/weasyprint-website.pdf

This gave a KeyError:

File "/usr/local/lib/python3.8/dist-packages/weasyprint/layout/flex.py", line 113, in flex_layout
    children = children[skip_stack[0]:]
KeyError: 0

I also got this same error when I tried it in my local environment, in which my pdf tests work, so I don't think this has anything to do with the installation.

[grewn0uille]

Hello!
We have the same error with master but not with v53.1. How do you install WeasyPrint in your Dockerfile?

[RosanneZe]

I installed it with pip in root with the dependencies as specified in the documentation. But I also got the error in my local environment in a virtualenv. I did not update the dependencies there, only updated weasyprint, but my pdf's are still generated correctly.

[grewn0uille]

Hm, I’m able to reproduce by using pip to install WeasyPrint instead of using the git tag.
It seems that the Pypi release contains code from a commit of master… We’re going to do a new release very soon to fix that.

Thanks a lot for your report!

[grewn0uille]

v53.2 has been released. It should be fixed :)