fixed style

Author: e-dorigatti

python/pyspark/util.py

@@ -98,7 +98,10 @@ def wrapper(*args, **kwargs):
         try:
             return f(*args, **kwargs)
         except StopIteration as exc:
-            raise RuntimeError("Caught StopIteration thrown from user's code; failing the task", exc)
+            raise RuntimeError(
+                "Caught StopIteration thrown from user's code; failing the task",
+                exc
+            )
 
     return wrapper