From 25b50b3fa6ff81c51da61c346cef4d455dad7c3c Mon Sep 17 00:00:00 2001
From: Phillip Cloud <cpcloud@gmail.com>
Date: Wed, 11 Dec 2013 22:12:40 -0500
Subject: [PATCH 1/2] DISP: show column dtype in DataFrame.info() output

---
 pandas/core/frame.py       |  4 +++-
 pandas/tests/test_frame.py | 15 +++++++++++++++
 2 files changed, 18 insertions(+), 1 deletion(-)

diff --git a/pandas/core/frame.py b/pandas/core/frame.py
index 90641a833f2a7..4aad541e3fcd1 100644
--- a/pandas/core/frame.py
+++ b/pandas/core/frame.py
@@ -1426,10 +1426,12 @@ def info(self, verbose=True, buf=None, max_cols=None):
             if len(cols) != len(counts):  # pragma: no cover
                 raise AssertionError('Columns must equal counts (%d != %d)' %
                                      (len(cols), len(counts)))
+            dtypes = self.dtypes
             for col, count in compat.iteritems(counts):
+                dtype = dtypes[col]
                 col = com.pprint_thing(col)
                 lines.append(_put_str(col, space) +
-                             '%d  non-null values' % count)
+                             '%d non-null %s' % (count, dtype))
         else:
             lines.append(self.columns.summary(name='Columns'))
 
diff --git a/pandas/tests/test_frame.py b/pandas/tests/test_frame.py
index 5b501de026c57..8103812a633df 100644
--- a/pandas/tests/test_frame.py
+++ b/pandas/tests/test_frame.py
@@ -6018,6 +6018,21 @@ def test_info_duplicate_columns(self):
                           columns=['a', 'a', 'b', 'b'])
         frame.info(buf=io)
 
+    def test_info_shows_column_dtypes(self):
+        dtypes = ['int64', 'float64', 'datetime64[ns]', 'timedelta64[ns]',
+                  'complex128', 'object', 'bool']
+        data = {}
+        n = 10
+        for i, dtype in enumerate(dtypes):
+            data[i] = np.random.randint(2, size=n).astype(dtype)
+        df = DataFrame(data)
+        buf = StringIO()
+        df.info(buf=buf)
+        res = buf.getvalue()
+        for i, dtype in enumerate(dtypes):
+            name = '%d    %d non-null %s' % (i, n, dtype)
+            assert name in res
+
     def test_dtypes(self):
         self.mixed_frame['bool'] = self.mixed_frame['A'] > 0
         result = self.mixed_frame.dtypes

From 85146885f18dd25f116a13025a663470399faa97 Mon Sep 17 00:00:00 2001
From: Phillip Cloud <cpcloud@gmail.com>
Date: Sat, 14 Dec 2013 13:04:48 -0500
Subject: [PATCH 2/2] TST: add test for lack of Series.info

---
 pandas/tests/test_series.py | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/pandas/tests/test_series.py b/pandas/tests/test_series.py
index d3104cdfad062..3e0a719bd93bd 100644
--- a/pandas/tests/test_series.py
+++ b/pandas/tests/test_series.py
@@ -2741,6 +2741,12 @@ def test_fillna_raise(self):
         self.assertRaises(TypeError, s.fillna, [1, 2])
         self.assertRaises(TypeError, s.fillna, (1, 2))
 
+    def test_raise_on_info(self):
+        s = Series(np.random.randn(10))
+        with tm.assertRaises(AttributeError):
+            s.info()
+
+
 # TimeSeries-specific
 
     def test_fillna(self):