Fixing errors listed by pytest and adding utils to use the book appoi… #353

Job	Run time
Set CI/CD metadata	2s
Commit stage / Check Markdown format	2s
Commit stage / Check file format	6s
Commit stage / Check English usage	5s
Commit stage / Count lines of code	8s
Commit stage / Scan secrets	6s
Commit stage / Scan dependencies	24s
Test stage / Unit tests	2s
Test stage / Linting	3s
Test stage / Test coverage	2s
Test stage / Perform static analysis	2s
Build & Assurance stage	0s
	1m 2s

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