Improvements

[Paebbels]

Changes

• Added typehints
• Added check is_dir() to list comprehension.
• Merged multiple calls to print and used dedent together with f-strings.
• Marked functions with @export so they get auto documented.

[codecov]

Codecov Report

❗ No coverage uploaded for pull request base (dev@645e27a). Click here to learn what that means.
The diff coverage is n/a.

@@          Coverage Diff           @@
##             dev       #4   +/-   ##
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  Coverage       ?   43.20%           
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  Files          ?        1           
  Lines          ?       81           
  Branches       ?       16           
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  Hits           ?       35           
  Misses         ?       43           
  Partials       ?        3           

Flag	Coverage Δ
unittests	43.20% <0.00%> (?)

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