use properties for setters

weboob/tools/property.py

@@ -0,0 +1,50 @@
+# -*- coding: utf-8 -*-
+
+# For Python 2.5-, this will enable the simliar property mechanism as in
+# Python 2.6+/3.0+. The code is based on
+# http://bruynooghe.blogspot.com/2008/04/xsetter-syntax-in-python-25.html
+
+# Copyright(C) 2010  Christophe Benz
+# 
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, version 3 of the License.
+# 
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+# 
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+
+
+import sys
+import __builtin__
+
+
+class property(property):
+  def __init__(self, fget, *args, **kwargs):
+      self.__doc__ = fget.__doc__
+      super(property, self).__init__(fget, *args, **kwargs)
+
+  def setter(self, fset):
+      cls_ns = sys._getframe(1).f_locals
+      for k, v in cls_ns.iteritems():
+          if v == self:
+              propname = k
+              break
+      cls_ns[propname] = property(self.fget, fset, self.fdel, self.__doc__)
+      return cls_ns[propname]
+
+  def deleter(self, fdel):
+      cls_ns = sys._getframe(1).f_locals
+      for k, v in cls_ns.iteritems():
+          if v == self:
+              propname = k
+              break
+      cls_ns[propname] = property(self.fget, self.fset, fdel, self.__doc__)
+      return cls_ns[propname]
+
+__builtin__.property = property