From bbd672e1bcb210622befa0e094a4e17e160ea2ba 2012-03-30 13:25:49
From: Walter Doerwald <walter@livinglogic.de>
Date: 2012-03-30 13:25:49
Subject: [PATCH] Don't use getattr() when searching for the _repr_pretty_ method.

Using getattr() might find a method in a base class, when a registered
printer for a baseclass later in the mro is the better fit.

---

diff --git a/IPython/lib/pretty.py b/IPython/lib/pretty.py
index b74037e..556a3fa 100644
--- a/IPython/lib/pretty.py
+++ b/IPython/lib/pretty.py
@@ -353,8 +353,10 @@ class RepresentationPrinter(PrettyPrinter):
                         # Some objects automatically create any requested
                         # attribute. Try to ignore most of them by checking for
                         # callability.
-                        if callable(getattr(obj_class, '_repr_pretty_')):
-                            return obj_class._repr_pretty_(obj, self, cycle)
+                        if '_repr_pretty_' in obj_class.__dict__:
+                            meth = obj_class._repr_pretty_
+                            if callable(meth):
+                                return meth(obj, self, cycle)
             return _default_pprint(obj, self, cycle)
         finally:
             self.end_group()