summary

Author: arthurlw

pandas/core/groupby/groupby.py

@@ -3805,8 +3805,7 @@ def rolling(
     @final
     def expanding(self, *args, **kwargs) -> ExpandingGroupby:
         """
-        Return an expanding grouper, providing expanding
-        functionality per group.
+        Return an expanding grouper, providing expanding functionality per group.
 
         Parameters
         ----------