From e7115a540688de8e61a8459309fd3995ba1a652e Mon Sep 17 00:00:00 2001
From: Nick Stahl <nstahl@gmail.com>
Date: Sat, 1 Nov 2014 13:38:24 -0400
Subject: [PATCH] BUG: setitem fails on mixed-type Panel4D

---
 doc/source/whatsnew/v0.15.1.txt |  2 ++
 pandas/core/indexing.py         |  2 +-
 pandas/tests/test_panel4d.py    | 47 +++++++++++++++++++++++++++++++++
 3 files changed, 50 insertions(+), 1 deletion(-)

diff --git a/doc/source/whatsnew/v0.15.1.txt b/doc/source/whatsnew/v0.15.1.txt
index e96adc2bd9559..96dd8e2fe8e59 100644
--- a/doc/source/whatsnew/v0.15.1.txt
+++ b/doc/source/whatsnew/v0.15.1.txt
@@ -227,3 +227,5 @@ Bug Fixes
 - Fixed a bug where plotting a column ``y`` and specifying a label would mutate the index name of the original DataFrame (:issue:`8494`)
 
 - Bug in ``date_range`` where partially-specified dates would incorporate current date (:issue:`6961`)
+
+- Setting by indexer to a scalar value with a mixed-dtype `Panel4d` was failing (:issue: `8702`)
diff --git a/pandas/core/indexing.py b/pandas/core/indexing.py
index 954acb0f95159..048e4af20d02f 100644
--- a/pandas/core/indexing.py
+++ b/pandas/core/indexing.py
@@ -355,7 +355,7 @@ def _setitem_with_indexer(self, indexer, value):
             # if we have a partial multiindex, then need to adjust the plane
             # indexer here
             if (len(labels) == 1 and
-                    isinstance(self.obj[labels[0]].index, MultiIndex)):
+                    isinstance(self.obj[labels[0]].axes[0], MultiIndex)):
                 item = labels[0]
                 obj = self.obj[item]
                 index = obj.index
diff --git a/pandas/tests/test_panel4d.py b/pandas/tests/test_panel4d.py
index e88a8c3b2874c..6ef8c1820400a 100644
--- a/pandas/tests/test_panel4d.py
+++ b/pandas/tests/test_panel4d.py
@@ -372,6 +372,53 @@ def test_setitem(self):
         self.panel4d['lP'] = self.panel4d['l1'] > 0
         self.assertEqual(self.panel4d['lP'].values.dtype, np.bool_)
 
+    def test_setitem_by_indexer(self):
+
+        # Panel
+        panel4dc = self.panel4d.copy()
+        p = panel4dc.iloc[0]
+        def func():
+            self.panel4d.iloc[0] = p
+        self.assertRaises(NotImplementedError, func)
+
+        # DataFrame
+        panel4dc = self.panel4d.copy()
+        df = panel4dc.iloc[0,0]
+        df.iloc[:] = 1
+        panel4dc.iloc[0,0] = df
+        self.assertTrue((panel4dc.iloc[0,0].values == 1).all())
+
+        # Series
+        panel4dc = self.panel4d.copy()
+        s = panel4dc.iloc[0,0,:,0]
+        s.iloc[:] = 1
+        panel4dc.iloc[0,0,:,0] = s
+        self.assertTrue((panel4dc.iloc[0,0,:,0].values == 1).all())
+
+        # scalar
+        panel4dc = self.panel4d.copy()
+        panel4dc.iloc[0] = 1
+        panel4dc.iloc[1] = True
+        panel4dc.iloc[2] = 'foo'
+        self.assertTrue((panel4dc.iloc[0].values == 1).all())
+        self.assertTrue(panel4dc.iloc[1].values.all())
+        self.assertTrue((panel4dc.iloc[2].values == 'foo').all())
+
+    def test_setitem_by_indexer_mixed_type(self):
+        # GH 8702
+        self.panel4d['foo'] = 'bar'
+
+        # scalar
+        panel4dc = self.panel4d.copy()
+        panel4dc.iloc[0] = 1
+        panel4dc.iloc[1] = True
+        panel4dc.iloc[2] = 'foo'
+        self.assertTrue((panel4dc.iloc[0].values == 1).all())
+        self.assertTrue(panel4dc.iloc[1].values.all())
+        self.assertTrue((panel4dc.iloc[2].values == 'foo').all())
+
+
+
     def test_comparisons(self):
         p1 = tm.makePanel4D()
         p2 = tm.makePanel4D()