Reformat code to pythonic standards

util/convert.py

@@ -1,6 +1,3 @@
-import re
-
-
 class InvalidStringException(Exception):
     """Raised when a string cannot be converted to an integer."""
     pass
@@ -25,4 +22,6 @@ def convert_string_to_integer(data: str) -> int | Exception:
         else:
             return int(data)
     except ValueError as exc:
-        raise InvalidStringException("The string could not be converted to an integer.") from exc
+        raise InvalidStringException(
+            "The string could not be converted to an integer.",
+        ) from exc