fixing pylint issues #19

Job	Run time
build-image / Build Docker Image	48s
lint-format / Run lint and formatting checks with pylint and black (3.12.4)	23s
unit-sec-scan / snyk_scan	26s
unit-sec-scan / Run unit test	12s
unit-sec-scan / app scan	34s
unit-sec-scan / Run Trivy security scanner against the image	1m 27s
	3m 50s

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