Updated internal refs

Author: WillAyd

pandas/core/frame.py

@@ -3840,8 +3840,9 @@ def set_index(self, keys, drop=True, append=False, inplace=False,
         index = _ensure_index_from_sequences(arrays, names)
 
         if verify_integrity and not index.is_unique:
-            duplicates = index.get_duplicates()
-            raise ValueError('Index has duplicate keys: %s' % duplicates)
+            duplicates = index[index.duplicated()].unique()
+            raise ValueError('Index has duplicate keys: {duplicates!s}'.format(
+                duplicates=duplicates))
 
         for c in to_remove:
             del frame[c]

pandas/core/indexes/datetimelike.py

@@ -501,10 +501,6 @@ def take(self, indices, axis=0, allow_fill=True,
         freq = self.freq if isinstance(self, ABCPeriodIndex) else None
         return self._shallow_copy(taken, freq=freq)
 
-    def get_duplicates(self):
-        values = Index.get_duplicates(self)
-        return self._simple_new(values)
-
     _can_hold_na = True
 
     _na_value = NaT

pandas/core/reshape/concat.py

@@ -504,7 +504,7 @@ def _get_concat_axis(self):
     def _maybe_check_integrity(self, concat_index):
         if self.verify_integrity:
             if not concat_index.is_unique:
-                overlap = concat_index.get_duplicates()
+                overlap = concat_index[concat_index.duplicated()].unique()
                 raise ValueError('Indexes have overlapping values: '
                                  '{overlap!s}'.format(overlap=overlap))
 

pandas/tests/indexes/datetimes/test_datetime.py

@@ -1,3 +1,4 @@
+import warnings
 
 import pytest
 
@@ -178,7 +179,10 @@ def test_get_duplicates(self):
         idx = DatetimeIndex(['2000-01-01', '2000-01-02', '2000-01-02',
                              '2000-01-03', '2000-01-03', '2000-01-04'])
 
-        result = idx.get_duplicates()
+        with warnings.catch_warnings(record=True):
+            # Deprecated - see GH20239
+            result = idx.get_duplicates()
+
         ex = DatetimeIndex(['2000-01-02', '2000-01-03'])
         tm.assert_index_equal(result, ex)
 

pandas/tests/indexes/test_multi.py

@@ -2413,8 +2413,12 @@ def check(nlevels, with_nulls):
         for a in [101, 102]:
             mi = MultiIndex.from_arrays([[101, a], [3.5, np.nan]])
             assert not mi.has_duplicates
-            assert mi.get_duplicates().equals(
-                MultiIndex.from_arrays([[], []]))
+
+            with warnings.catch_warnings(record=True):
+                # Deprecated - see GH20239
+                assert mi.get_duplicates().equals(MultiIndex.from_arrays(
+                    [[], []]))
+
             tm.assert_numpy_array_equal(mi.duplicated(), np.zeros(
                 2, dtype='bool'))
 
@@ -2426,8 +2430,12 @@ def check(nlevels, with_nulls):
                                 labels=np.random.permutation(list(lab)).T)
                 assert len(mi) == (n + 1) * (m + 1)
                 assert not mi.has_duplicates
-                assert mi.get_duplicates().equals(
-                    MultiIndex.from_arrays([[], []]))
+
+                with warnings.catch_warnings(record=True):
+                    # Deprecated - see GH20239
+                    assert mi.get_duplicates().equals(MultiIndex.from_arrays(
+                        [[], []]))
+
                 tm.assert_numpy_array_equal(mi.duplicated(), np.zeros(
                     len(mi), dtype='bool'))
 

pandas/tests/indexes/timedeltas/test_timedelta.py

@@ -1,3 +1,5 @@
+import warnings
+
 import pytest
 
 import numpy as np
@@ -145,7 +147,10 @@ def test_get_duplicates(self):
         idx = TimedeltaIndex(['1 day', '2 day', '2 day', '3 day', '3day',
                               '4day'])
 
-        result = idx.get_duplicates()
+        with warnings.catch_warnings(record=True):
+            # Deprecated - see GH20239
+            result = idx.get_duplicates()
+
         ex = TimedeltaIndex(['2 day', '3day'])
         tm.assert_index_equal(result, ex)