CLN: Remove the Panel4D and PanelND classes

Deprecated back in v0.19.0

xref pandas-devgh-13147

Author: gfyoung

doc/source/whatsnew/v0.23.0.txt

@@ -249,6 +249,7 @@ Removal of prior version deprecations/changes
 - The ``Series``, ``Categorical``, and ``Index`` classes have dropped the ``reshape`` method (:issue:`13012`)
 - ``pandas.tseries.frequencies.get_standard_freq`` has been removed in favor of ``pandas.tseries.frequencies.to_offset(freq).rule_code`` (:issue:`13874`)
 - The ``freqstr`` keyword has been removed from ``pandas.tseries.frequencies.to_offset`` in favor of ``freq`` (:issue:`13874`)
+- The ``Panel4D`` and ``PanelND`` classes have been removed (:issue:`13776`)
 
 .. _whatsnew_0230.performance:
 

pandas/core/api.py

@@ -22,7 +22,6 @@
 from pandas.core.series import Series
 from pandas.core.frame import DataFrame
 from pandas.core.panel import Panel, WidePanel
-from pandas.core.panel4d import Panel4D
 
 # TODO: Remove import when statsmodels updates #18264
 from pandas.core.reshape.reshape import get_dummies

pandas/core/dtypes/generic.py

@@ -43,7 +43,7 @@ def _check(cls, inst):
 
 ABCSeries = create_pandas_abc_type("ABCSeries", "_typ", ("series", ))
 ABCDataFrame = create_pandas_abc_type("ABCDataFrame", "_typ", ("dataframe", ))
-ABCPanel = create_pandas_abc_type("ABCPanel", "_typ", ("panel", "panel4d"))
+ABCPanel = create_pandas_abc_type("ABCPanel", "_typ", ("panel",))
 ABCSparseSeries = create_pandas_abc_type("ABCSparseSeries", "_subtyp",
                                          ('sparse_series',
                                           'sparse_time_series'))

pandas/core/panel4d.py

@@ -24,7 +24,7 @@
 from pandas.core.dtypes.missing import array_equivalent
 
 import numpy as np
-from pandas import (Series, DataFrame, Panel, Panel4D, Index,
+from pandas import (Series, DataFrame, Panel, Index,
                     MultiIndex, Int64Index, isna, concat, to_datetime,
                     SparseSeries, SparseDataFrame, PeriodIndex,
                     DatetimeIndex, TimedeltaIndex)
@@ -180,7 +180,6 @@ class DuplicateWarning(Warning):
     DataFrame: u('frame'),
     SparseDataFrame: u('sparse_frame'),
     Panel: u('wide'),
-    Panel4D: u('ndim'),
 }
 
 # storer class map
@@ -203,7 +202,6 @@ class DuplicateWarning(Warning):
     u('appendable_frame'): 'AppendableFrameTable',
     u('appendable_multiframe'): 'AppendableMultiFrameTable',
     u('appendable_panel'): 'AppendablePanelTable',
-    u('appendable_ndim'): 'AppendableNDimTable',
     u('worm'): 'WORMTable',
     u('legacy_frame'): 'LegacyFrameTable',
     u('legacy_panel'): 'LegacyPanelTable',
@@ -212,8 +210,7 @@ class DuplicateWarning(Warning):
 # axes map
 _AXES_MAP = {
     DataFrame: [0],
-    Panel: [1, 2],
-    Panel4D: [1, 2, 3],
+    Panel: [1, 2]
 }
 
 # register our configuration options
@@ -924,7 +921,7 @@ def append(self, key, value, format=None, append=True, columns=None,
         Parameters
         ----------
         key : object
-        value : {Series, DataFrame, Panel, Panel4D}
+        value : {Series, DataFrame, Panel}
         format: 'table' is the default
             table(t) : table format
                        Write as a PyTables Table structure which may perform
@@ -4346,14 +4343,6 @@ def is_transposed(self):
         return self.data_orientation != tuple(range(self.ndim))
 
 
-class AppendableNDimTable(AppendablePanelTable):
-
-    """ suppor the new appendable table formats """
-    table_type = u('appendable_ndim')
-    ndim = 4
-    obj_type = Panel4D
-
-
 def _reindex_axis(obj, axis, labels, other=None):
     ax = obj._get_axis(axis)
     labels = _ensure_index(labels)

pandas/core/panelnd.py

@@ -51,8 +51,7 @@ class TestPDApi(Base):
                'TimedeltaIndex', 'Timestamp', 'Interval', 'IntervalIndex']
 
     # these are already deprecated; awaiting removal
-    deprecated_classes = ['WidePanel', 'Panel4D', 'TimeGrouper',
-                          'Expr', 'Term']
+    deprecated_classes = ['WidePanel', 'TimeGrouper', 'Expr', 'Term']
 
     # these should be deprecated in the future
     deprecated_classes_in_future = ['Panel']

pandas/io/pytables.py

@@ -99,13 +99,6 @@ def test_isna_isnull(self, isna_f):
                 expected = p.apply(isna_f)
                 tm.assert_panel_equal(result, expected)
 
-        # panel 4d
-        with catch_warnings(record=True):
-            for p in [tm.makePanel4D(), tm.add_nans_panel4d(tm.makePanel4D())]:
-                result = isna_f(p)
-                expected = p.apply(isna_f)
-                tm.assert_panel4d_equal(result, expected)
-
     def test_isna_lists(self):
         result = isna([[False]])
         exp = np.array([[False]])

pandas/tests/api/test_api.py

@@ -366,12 +366,6 @@ def test_raise_on_panel_with_multiindex(self, parser, engine):
         with pytest.raises(NotImplementedError):
             pd.eval('p + 1', parser=parser, engine=engine)
 
-    def test_raise_on_panel4d_with_multiindex(self, parser, engine):
-        p4d = tm.makePanel4D(7)
-        p4d.items = tm.makeCustomIndex(len(p4d.items), nlevels=2)
-        with pytest.raises(NotImplementedError):
-            pd.eval('p4d + 1', parser=parser, engine=engine)
-
 
 @td.skip_if_no_ne
 class TestDataFrameQueryNumExprPandas(object):