Pull request checklist

Please check if your PR fulfills the following requirements:

• Docs have been reviewed and added / updated if needed (for bug fixes / features)
• Tests have been added that prove the fix is effective or that the feature works.
• New and existing tests pass locally with the changes.
• Code follows the style guidelines of this project (PEP8, clean code).
• Linter has passed locally and any fixes were made for failures.
• A self-review of the code has been done.

Pull request type

Please check the type of change your PR introduces:

• Bugfix
• Feature
• Code style update (formatting, renaming)
• Refactoring (no functional changes, no api changes)
• Build related changes
• Documentation content changes (not tied to bugs/features)
• Other (please describe):

What is the ticket or issue number?

N/A

Pull Request Description

Running the tests triggered an error when count_valid was not set in init

Does this introduce a breaking change?

• Yes
• No

How Has This Been Tested?

Pytests