enable pylint:useless-return (#49400)

* enable pylint:useless-return

* fixup! enable pylint:useless-return

Co-authored-by: Marco Edward Gorelli <[email protected]>

Author: natmokval

pandas/core/arrays/_mixins.py

@@ -304,7 +304,6 @@ def _fill_mask_inplace(
         # (for now) when self.ndim == 2, we assume axis=0
         func = missing.get_fill_func(method, ndim=self.ndim)
         func(self._ndarray.T, limit=limit, mask=mask.T)
-        return
 
     @doc(ExtensionArray.fillna)
     def fillna(

pandas/core/arrays/base.py

@@ -1556,7 +1556,6 @@ def _fill_mask_inplace(
         func(npvalues, limit=limit, mask=mask.copy())
         new_values = self._from_sequence(npvalues, dtype=self.dtype)
         self[mask] = new_values[mask]
-        return
 
     def _rank(
         self,

pandas/core/missing.py

@@ -258,7 +258,6 @@ def interpolate_array_2d(
             fill_value=fill_value,
             **kwargs,
         )
-    return
 
 
 def _interpolate_2d_with_fill(
@@ -341,7 +340,6 @@ def func(yvalues: np.ndarray) -> None:
     # Sequence[Sequence[Sequence[_SupportsArray[dtype[<nothing>]]]]],
     # Sequence[Sequence[Sequence[Sequence[_SupportsArray[dtype[<nothing>]]]]]]]]"
     np.apply_along_axis(func, axis, data)  # type: ignore[arg-type]
-    return
 
 
 def _index_to_interp_indices(index: Index, method: str) -> np.ndarray:
@@ -762,8 +760,6 @@ def _interpolate_with_limit_area(
 
         values[invalid] = np.nan
 
-    return
-
 
 def interpolate_2d(
     values: np.ndarray,

pandas/tests/groupby/test_apply.py

@@ -151,7 +151,6 @@ def f_scalar(group):
     def f_none(group):
         # GH10519, GH12155, GH21417
         names.append(group.name)
-        return None
 
     def f_constant_df(group):
         # GH2936, GH20084

pyproject.toml

@@ -135,7 +135,6 @@ disable = [
   "unnecessary-list-index-lookup",
   "use-a-generator",
   "useless-option-value",
-  "useless-return",
 
   # pylint type "W": warning, for python specific problems
   "abstract-method",