From 7eb58d30ffc34053c2b6aff906d7efcbcf39b724 2011-04-02 21:17:18
From: Antonio Cuni <antocuni>
Date: 2011-04-02 21:17:18
Subject: [PATCH] Tweak config loader for PyPy compatibility.

closes gh-327

---

diff --git a/IPython/config/loader.py b/IPython/config/loader.py
index 652d321..056ae61 100644
--- a/IPython/config/loader.py
+++ b/IPython/config/loader.py
@@ -118,6 +118,11 @@ class Config(dict):
         return type(self)(copy.deepcopy(self.items()))
 
     def __getitem__(self, key):
+        # We cannot use directly self._is_section_key, because it triggers
+        # infinite recursion on top of PyPy. Instead, we manually fish the
+        # bound method.
+        is_section_key = self.__class__._is_section_key.__get__(self)
+        
         # Because we use this for an exec namespace, we need to delegate
         # the lookup of names in __builtin__ to itself.  This means
         # that you can't have section or attribute names that are 
@@ -126,7 +131,7 @@ class Config(dict):
             return getattr(__builtin__, key)
         except AttributeError:
             pass
-        if self._is_section_key(key):
+        if is_section_key(key):
             try:
                 return dict.__getitem__(self, key)
             except KeyError: