fixup: show_channel Python code fixed using Ruff #3190

Job	Run time
Cache identify	4s
Shellcheck	7s
Dependency	4s
Prepare	7s
Ruff check and force	12s
Check commit	0s
Run pytest using Python ${{ matrix.python-version }}	-1s
Run mypy	-1s
Process test coverage	-1s
Process test complexity	0s
Build and publish Python 🐍 distributions 📦 to TestPyPI	0s
	31s

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