Merge pull request #5644 from jhamrick/master

Do not record memory addresses of display objects

IPython/core/display.py

@@ -317,6 +317,7 b' class DisplayObject(object):'
     """An object that wraps data to be displayed."""
 
     _read_flags = 'r'
+    _show_mem_addr = False
 
     def __init__(self, data=None, url=None, filename=None):
         """Create a display object given raw data.
@@ -353,7 +354,15 b' class DisplayObject(object):'
 
         self.reload()
         self._check_data()
-    
+
+    def __repr__(self):
+        if not self._show_mem_addr:
+            cls = self.__class__
+            r = "<%s.%s object>" % (cls.__module__, cls.__name__)
+        else:
+            r = super(DisplayObject, self).__repr__()
+        return r
+
     def _check_data(self):
         """Override in subclasses if there's something to check."""
         pass

IPython/core/tests/test_display.py

@@ -116,3 +116,17 b' def test_set_matplotlib_formats_kwargs():'
     expected.update(cfg.print_figure_kwargs)
     nt.assert_equal(cell, expected)
 
+def test_displayobject_repr():
+    h = display.HTML('<br />')
+    nt.assert_equal(repr(h), '<IPython.core.display.HTML object>')
+    h._show_mem_addr = True
+    nt.assert_equal(repr(h), object.__repr__(h))
+    h._show_mem_addr = False
+    nt.assert_equal(repr(h), '<IPython.core.display.HTML object>')
+
+    j = display.Javascript('')
+    nt.assert_equal(repr(j), '<IPython.core.display.Javascript object>')
+    j._show_mem_addr = True
+    nt.assert_equal(repr(j), object.__repr__(j))
+    j._show_mem_addr = False
+    nt.assert_equal(repr(j), '<IPython.core.display.Javascript object>')