[Xen-devel] [PATCH] xm: fix message in OptionError deprecated since Python 2.6

[Wei Kong <weikong.cn@xxxxxxxxx>]

BaseException.message has been deprecated since Python 2.6.  
To prevent DeprecationWarning from popping up over this pre-existing attribute, 
use a new property that takes lookup precedence.

Signed-off-by: Wei Kong <weikong.cn@gmail.com>

--
--- xen-unstable.hg/tools/python/xen/xm/opts.py 2009-12-02 09:46:51.000000000 +0800
+++ xen-unstable.hg/tools/python/xen/xm/opts.py 2009-12-02 11:56:35.000000000 +0800
@@ -55,10 +55,19 @@ def wrap(text, width = 70):
     return lines

 class OptionError(Exception):
+    def _get_message(self):
+        return self.__message
+
+    def _set_message(self, value):
+        self.__message = value
+
+    message = property(_get_message, _set_message)
+
     """Denotes an error in option parsing."""
     def __init__(self, message, usage = ''):
         self.message = message
         self.usage = usage
+        Exception.__init__(self, message)
     def __str__(self):
         return self.message

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