Fixes for flake8 #2910

Job	Run time
playwright-examples (3.11, ubuntu-latest)	7m 8s
build (3.11, ubuntu-latest)	2m 6s
playwright-examples (3.10, ubuntu-latest)	7m 26s
build (3.11, windows-latest)	2m 15s
playwright-examples (3.9, ubuntu-latest)	7m 17s
build (3.11, macOS-latest)	2m 4s
playwright-examples (3.8, ubuntu-latest)	7m 19s
build (3.10, ubuntu-latest)	2m 7s
playwright-shiny (3.11, ubuntu-latest)	8m 46s
build (3.10, windows-latest)	2m 4s
playwright-shiny (3.10, ubuntu-latest)	8m 39s
build (3.10, macOS-latest)	2m 5s
playwright-shiny (3.9, ubuntu-latest)	9m 21s
build (3.9, ubuntu-latest)	2m 2s
playwright-shiny (3.8, ubuntu-latest)	8m 37s
build (3.9, windows-latest)	2m 6s
build (3.9, macOS-latest)	2m 7s
build (3.8, ubuntu-latest)	1m 57s
build (3.8, windows-latest)	1m 53s
playwright-deploys	0s
build (3.8, macOS-latest)	1m 59s
testrail-reporting-nightly	0s
Deploy to PyPI	0s
	1h 29m 18s

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