ruff formatting

Author: ktseng4096

pandas/core/groupby/groupby.py

@@ -3034,7 +3034,7 @@ def prod(self, numeric_only: bool = False, min_count: int = 0) -> NDFrameT:
         --------
         For SeriesGroupBy:
 
-        >>> lst = ['a', 'a', 'b', 'b']
+        >>> lst = ["a", "a", "b", "b"]
         >>> ser = pd.Series([1, 2, 3, 4], index=lst)
         >>> ser
         a    1
@@ -3050,8 +3050,11 @@ def prod(self, numeric_only: bool = False, min_count: int = 0) -> NDFrameT:
         For DataFrameGroupBy:
 
         >>> data = [[1, 8, 2], [1, 2, 5], [2, 5, 8], [2, 6, 9]]
-        >>> df = pd.DataFrame(data, columns=["a", "b", "c"],
-        ...                   index=["tiger", "leopard", "cheetah", "lion"])
+        >>> df = pd.DataFrame(
+        ...     data,
+        ...     columns=["a", "b", "c"],
+        ...     index=["tiger", "leopard", "cheetah", "lion"],
+        ... )
         >>> df
                   a  b  c
           tiger   1  8  2