diff -r b758351d191f -r cc9b7e14412b web/lib/django/core/serializers/pyyaml.py
--- a/web/lib/django/core/serializers/pyyaml.py	Wed May 19 17:43:59 2010 +0200
+++ b/web/lib/django/core/serializers/pyyaml.py	Tue May 25 02:43:45 2010 +0200
@@ -5,13 +5,9 @@
 """
 
 from StringIO import StringIO
+import decimal
 import yaml
 
-try:
-    import decimal
-except ImportError:
-    from django.utils import _decimal as decimal # Python 2.3 fallback
-
 from django.db import models
 from django.core.serializers.python import Serializer as PythonSerializer
 from django.core.serializers.python import Deserializer as PythonDeserializer
@@ -26,9 +22,9 @@
     """
     Convert a queryset to YAML.
     """
-    
+
     internal_use_only = False
-    
+
     def handle_field(self, obj, field):
         # A nasty special case: base YAML doesn't support serialization of time
         # types (as opposed to dates or datetimes, which it does support). Since
@@ -40,10 +36,11 @@
             self._current[field.name] = str(getattr(obj, field.name))
         else:
             super(Serializer, self).handle_field(obj, field)
-    
+
     def end_serialization(self):
         self.options.pop('stream', None)
         self.options.pop('fields', None)
+        self.options.pop('use_natural_keys', None)
         yaml.dump(self.objects, self.stream, Dumper=DjangoSafeDumper, **self.options)
 
     def getvalue(self):
@@ -57,6 +54,6 @@
         stream = StringIO(stream_or_string)
     else:
         stream = stream_or_string
-    for obj in PythonDeserializer(yaml.load(stream)):
+    for obj in PythonDeserializer(yaml.load(stream), **options):
         yield obj