From d7f4d2bea9914893690a53ec96d05fe9e2e91827 2010-01-06 01:39:30
From: Fernando Perez <Fernando.Perez@berkeley.edu>
Date: 2010-01-06 01:39:30
Subject: [PATCH] Equivalent but simpler/faster code in loader.py.

---

diff --git a/IPython/config/loader.py b/IPython/config/loader.py
index ae411b5..b3e47fd 100644
--- a/IPython/config/loader.py
+++ b/IPython/config/loader.py
@@ -334,8 +334,7 @@ class ArgParseConfigLoader(CommandLineConfigLoader):
 
     def _add_arguments(self):
         for argument in self.arguments:
-            if not argument[1].has_key('default'):
-                argument[1]['default'] = NoConfigDefault
+            argument[1].setdefault('default', NoConfigDefault)
             self.parser.add_argument(*argument[0],**argument[1])
 
     def _parse_args(self, args=None):