PR Summary

Fixed#20782. Inhttps://github.com/matplotlib/matplotlib/blob/master/lib/matplotlib/_constrained_layout.py#L304

fixed typo

if fig._supylabel is not None and fig._supxlabel.get_in_layout():

to

if fig._supylabel is not None and fig._supylabel.get_in_layout():

PR Checklist

• Has pytest style unit tests (andpytest passes).
• Conforms to Matplotlib style conventions (installflake8-docstrings and runflake8 --docstring-convention=all).
• IsFlake 8 compliant (runflake8 on changed files to check).
• [N/A] New features are documented, with examples if plot related.
• [N/A] Documentation is sphinx and numpydoc compliant (the docs shouldbuild without error).
• [N/A] New features have an entry indoc/users/next_whats_new/ (follow instructions in README.rst there).
• [N/A] API changes documented indoc/api/next_api_changes/ (follow instructions in README.rst there).