Ticket #10130: 10130-r9791.diff

django/conf/__init__.py

@@ -41 +41 @@
                 self._import_settings()
             setattr(self._target, name, value)
 
+    def __delattr__(self, name):
+        if name == '_target':
+            # Delete directly from self.__dict__, because otherwise we'd call
+            # __delattr__(), which would be an infinite loop.
+            del self.__dict__['_target']
+        else:
+            if self._target is None:
+                self._import_settings()
+            delattr(self._target, name)
+
     def _import_settings(self):
         """
         Load the settings module pointed to by the environment variable. This