Pycodestyle changes made to Flashcards

[Souperhero]

Requirements

• This template is required when creating a pull request. If a pull request does not include enough information to be reviewed in a timely manner, it may be closed at the maintainers' discretion.
• All new code requires testing to ensure against regression and conflict with existing code
• Include screenshots when appropriate

Description of the Change

Made the entire folder of /src/flashcards/ pycodestyle compliant

Alternate Designs

[if applicable]

Why Should This Be In FlashCourses?

This brings this specific folder within the code base up to date with current pycodestyle formats.

Benefits

Continuity between all files in the codebase

Possible Drawbacks

[Explain]

Verification Process

[Explain how it was tested]

Applicable Issues

[if applicable]