DOC: Closed parameter not intuitively documented in DataFrame.rolling (#60832)

* change docs * format * format

Author: SebastianOuslis

pandas/core/groupby/groupby.py

@@ -3717,14 +3717,21 @@ def rolling(
  an integer index is not used to calculate the rolling window.
 
  closed : str, default None
- If ``'right'``, the first point in the window is excluded from calculations.
+ Determines the inclusivity of points in the window
+ If ``'right'``, (First, Last] the last point in the window
+ is included in the calculations.
 
- If ``'left'``, the last point in the window is excluded from calculations.
+ If ``'left'``, [First, Last) the first point in the window
+ is included in the calculations.
 
- If ``'both'``, no points in the window are excluded from calculations.
+ If ``'both'``, [First, Last] all points in the window
+ are included in the calculations.
 
- If ``'neither'``, the first and last points in the window are excluded
- from calculations.
+ If ``'neither'``, (First, Last) the first and last points
+ in the window are excludedfrom calculations.
+
+ () and [] are referencing open and closed set
+ notation respetively.
 
  Default ``None`` (``'right'``).
 

pandas/core/window/rolling.py

@@ -929,14 +929,21 @@ class Window(BaseWindow):
  an integer index is not used to calculate the rolling window.
 
  closed : str, default None
- If ``'right'``, the first point in the window is excluded from calculations.
+ Determines the inclusivity of points in the window
+ If ``'right'``, (First, Last] the last point in the window
+ is included in the calculations.
 
- If ``'left'``, the last point in the window is excluded from calculations.
+ If ``'left'``, [First, Last) the first point in the window
+ is included in the calculations.
 
- If ``'both'``, no point in the window is excluded from calculations.
+ If ``'both'``, [First, Last] all points in the window
+ are included in the calculations.
 
- If ``'neither'``, the first and last points in the window are excluded
- from calculations.
+ If ``'neither'``, (First, Last) the first and last points
+ in the window are excludedfrom calculations.
+
+ () and [] are referencing open and closed set
+ notation respetively.
 
  Default ``None`` (``'right'``).