remove _master attribute from FigureCanvasTk #20477
Merged
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PR Summary
The nominal parent widget of
FigureCanvasTk
can sometimes have acall
method and sometimes not, occasionally breaking_update_device_pixel_ratio
. However, the class has complete control over what_tkcanvas
is, and_tkcanvas
can substitute for all uses of_master
.PR Checklist
pytest
passes).flake8
on changed files to check).flake8-docstrings
and runflake8 --docstring-convention=all
).doc/users/next_whats_new/
(follow instructions in README.rst there).doc/api/next_api_changes/
(follow instructions in README.rst there).