Merge branch 'main' into fix59933

.github/CODEOWNERS

@@ -4,9 +4,6 @@
 # ci
 ci/                               @mroeschke
 
-# web
-web/                              @datapythonista
-
 # docs
 doc/cheatsheet                    @Dr-Irv
 doc/source/development            @noatamir

doc/source/whatsnew/v3.0.0.rst

@@ -358,6 +358,7 @@ Other API changes
 - Made ``dtype`` a required argument in :meth:`ExtensionArray._from_sequence_of_strings` (:issue:`56519`)
 - Passing a :class:`Series` input to :func:`json_normalize` will now retain the :class:`Series` :class:`Index`, previously output had a new :class:`RangeIndex` (:issue:`51452`)
 - Removed :meth:`Index.sort` which always raised a ``TypeError``. This attribute is not defined and will raise an ``AttributeError`` (:issue:`59283`)
+- Unused ``dtype`` argument has been removed from the :class:`MultiIndex` constructor (:issue:`60962`)
 - Updated :meth:`DataFrame.to_excel` so that the output spreadsheet has no styling. Custom styling can still be done using :meth:`Styler.to_excel` (:issue:`54154`)
 - pickle and HDF (``.h5``) files created with Python 2 are no longer explicitly supported (:issue:`57387`)
 - pickled objects from pandas version less than ``1.0.0`` are no longer supported (:issue:`57155`)
@@ -818,6 +819,7 @@ Other
 - Bug in :meth:`DataFrame.transform` that was returning the wrong order unless the index was monotonically increasing. (:issue:`57069`)
 - Bug in :meth:`DataFrame.where` where using a non-bool type array in the function would return a ``ValueError`` instead of a ``TypeError`` (:issue:`56330`)
 - Bug in :meth:`Index.sort_values` when passing a key function that turns values into tuples, e.g. ``key=natsort.natsort_key``, would raise ``TypeError`` (:issue:`56081`)
+- Bug in :meth:`MultiIndex.fillna` error message was referring to ``isna`` instead of ``fillna`` (:issue:`60974`)
 - Bug in :meth:`Series.diff` allowing non-integer values for the ``periods`` argument. (:issue:`56607`)
 - Bug in :meth:`Series.dt` methods in :class:`ArrowDtype` that were returning incorrect values. (:issue:`57355`)
 - Bug in :meth:`Series.isin` raising ``TypeError`` when series is large (>10**6) and ``values`` contains NA (:issue:`60678`)

pandas/core/indexes/multi.py

@@ -212,8 +212,6 @@ class MultiIndex(Index):
         level).
     names : optional sequence of objects
         Names for each of the index levels. (name is accepted for compat).
-    dtype : Numpy dtype or pandas type, optional
-        Data type for the MultiIndex.
     copy : bool, default False
         Copy the meta-data.
     name : Label
@@ -305,7 +303,6 @@ def __new__(
         codes=None,
         sortorder=None,
         names=None,
-        dtype=None,
         copy: bool = False,
         name=None,
         verify_integrity: bool = True,
@@ -1760,7 +1757,7 @@ def fillna(self, value):
         """
         fillna is not implemented for MultiIndex
         """
-        raise NotImplementedError("isna is not defined for MultiIndex")
+        raise NotImplementedError("fillna is not defined for MultiIndex")
 
     @doc(Index.dropna)
     def dropna(self, how: AnyAll = "any") -> MultiIndex:

pandas/tests/base/test_fillna.py

@@ -16,7 +16,7 @@ def test_fillna(index_or_series_obj):
     obj = index_or_series_obj
 
     if isinstance(obj, MultiIndex):
-        msg = "isna is not defined for MultiIndex"
+        msg = "fillna is not defined for MultiIndex"
         with pytest.raises(NotImplementedError, match=msg):
             obj.fillna(0)
         return

pandas/tests/indexes/multi/test_missing.py

@@ -8,7 +8,7 @@
 
 def test_fillna(idx):
     # GH 11343
-    msg = "isna is not defined for MultiIndex"
+    msg = "fillna is not defined for MultiIndex"
     with pytest.raises(NotImplementedError, match=msg):
         idx.fillna(idx[0])
 

pandas/tests/indexes/test_old_base.py

@@ -597,7 +597,7 @@ def test_fillna(self, index):
             pytest.skip(f"Not relevant for Index with {index.dtype}")
         elif isinstance(index, MultiIndex):
             idx = index.copy(deep=True)
-            msg = "isna is not defined for MultiIndex"
+            msg = "fillna is not defined for MultiIndex"
             with pytest.raises(NotImplementedError, match=msg):
                 idx.fillna(idx[0])
         else:

pandas/tests/indexing/multiindex/test_loc.py

@@ -105,7 +105,7 @@ def test_loc_getitem_series(self):
         empty = Series(data=[], dtype=np.float64)
         expected = Series(
             [],
-            index=MultiIndex(levels=index.levels, codes=[[], []], dtype=np.float64),
+            index=MultiIndex(levels=index.levels, codes=[[], []]),
             dtype=np.float64,
         )
         result = x.loc[empty]
@@ -129,7 +129,7 @@ def test_loc_getitem_array(self):
         empty = np.array([])
         expected = Series(
             [],
-            index=MultiIndex(levels=index.levels, codes=[[], []], dtype=np.float64),
+            index=MultiIndex(levels=index.levels, codes=[[], []]),
             dtype="float64",
         )
         result = x.loc[empty]

web/pandas/about/team.md

@@ -41,8 +41,6 @@ If you want to support pandas development, you can find information in the [dona
 
 ## Governance
 
-Wes McKinney is the Benevolent Dictator for Life (BDFL).
-
 The project governance is available in the [project governance page]({{ base_url }}about/governance.html).
 
 ## Workgroups

web/pandas/config.yml

@@ -132,16 +132,14 @@ workgroups:
     contact: infrastructure@pandas.pydata.org
     responsibilities: "Keep the pandas infrastructure up and working. In particular the servers for the website, benchmarks, CI and others needed."
     members:
-    - Marc Garcia
-    - Matthew Roeschke
+    - William Ayd
     - Thomas Li
   communications:
     name: Communications
     contact: communications@pandas.pydata.org
     responsibilities: "Share relevant information with the broader community, mainly via our social networks, as well as being the main point of contact between NumFOCUS and the core team."
     members:
     - Marco Gorelli
-    - Marc Garcia
 sponsors:
   active:
   - name: "NumFOCUS"