[pre-commit.ci] auto fixes from pre-commit.com hooks

for more information, see https://pre-commit.ci

Author: pre-commit-ci[bot]

mypy/config_parser.py

@@ -72,7 +72,9 @@ def try_split(v: str | Sequence[str] | Any, split_regex: str = "[,]") -> list[st
     elif isinstance(v, Sequence):
         return [p.strip() if isinstance(p, str) else p for p in v]
     else:
-        raise argparse.ArgumentTypeError(f"Expected a list or a stringified version thereof, but got: '{v}'")
+        raise argparse.ArgumentTypeError(
+            f"Expected a list or a stringified version thereof, but got: '{v}'"
+        )
 
 
 def validate_codes(codes: list[str]) -> list[str]: