Merge pull request pandas-dev#3466 from y-p/more_pprint

Fix pprint of index, summarizes according to display.max_seq_items

RELEASE.rst

@@ -42,6 +42,8 @@ pandas 0.12.0
 
   - When removing an object from a store, **store.remove(key)**, raises
     **KeyError** if **key** is not a valid store object.
+  - The repr() for (Multi)Index now obeys display.max_seq_items rather
+    then numpy threshold print options. (GH3426_, GH3466_)
 
 **Bug Fixes**
 
@@ -61,6 +63,8 @@ pandas 0.12.0
 .. _GH3379: https://github.com/pydata/pandas/issues/3379
 .. _GH3454: https://github.com/pydata/pandas/issues/3454
 .. _GH3457: https://github.com/pydata/pandas/issues/3457
+.. _GH3426: https://github.com/pydata/pandas/issues/3426
+.. _GH3466: https://github.com/pydata/pandas/issues/3466
 .. _GH3038: https://github.com/pydata/pandas/issues/3038
 .. _GH3437: https://github.com/pydata/pandas/issues/3437
 .. _GH3455: https://github.com/pydata/pandas/issues/3455

pandas/core/index.py

@@ -170,12 +170,7 @@ def __unicode__(self):
 
         Invoked by unicode(df) in py2 only. Yields a Unicode String in both py2/py3.
         """
-        if len(self) > 6 and len(self) > np.get_printoptions()['threshold']:
-            data = self[:3].format() + ["..."] + self[-3:].format()
-        else:
-            data = self.format()
-
-        prepr = com.pprint_thing(data, escape_chars=('\t', '\r', '\n'),quote_strings=True)
+        prepr = com.pprint_thing(self, escape_chars=('\t', '\r', '\n'),quote_strings=True)
         return '%s(%s, dtype=%s)' % (type(self).__name__, prepr, self.dtype)
 
     def __repr__(self):
@@ -1504,19 +1499,9 @@ def __unicode__(self):
         """
         output = 'MultiIndex\n%s'
 
-        options = np.get_printoptions()
-        np.set_printoptions(threshold=50)
-
-        if len(self) > 100:
-            values = self[:50].format() + ["..."] + self[-50:].format()
-        else:
-            values = self.format()
-
-        summary = com.pprint_thing(values, escape_chars=('\t', '\r', '\n'),
+        summary = com.pprint_thing(self, escape_chars=('\t', '\r', '\n'),
                                    quote_strings=True)
 
-        np.set_printoptions(threshold=options['threshold'])
-
         return output % summary
 
     def __repr__(self):

pandas/tests/test_index.py

@@ -17,6 +17,7 @@
 import pandas.core.common as com
 
 import pandas.util.testing as tm
+import pandas.core.config as cf
 
 from pandas.tseries.index import _to_m8
 import pandas.tseries.offsets as offsets
@@ -895,9 +896,10 @@ def test_print_unicode_columns(self):
         repr(df.columns)  # should not raise UnicodeDecodeError
 
     def test_repr_summary(self):
-        r = repr(pd.Index(np.arange(10000)))
-        self.assertTrue(len(r) < 100)
-        self.assertTrue("..." in r)
+        with cf.option_context('display.max_seq_items',10):
+            r = repr(pd.Index(np.arange(1000)))
+            self.assertTrue(len(r) < 100)
+            self.assertTrue("..." in r)
 
     def test_unicode_string_with_unicode(self):
         idx = Index(range(1000))