Hi, Read this: http://www.python.org/2.2.3/descrintro.html#property
If you still don't understand or are confused about it's usage, ask here. Hint: Suppose you need to create an Age class with a 'years' attribute and ensure that, (assuming I create an object a = Age()) 1) when one tries to access 'a.years', a '0' would be returned even if the value was not set or was set to a negative value, and 2) If a value is assigned to the 'years' attribute, we should check for negative values. HTH Regards Steve -- http://mail.python.org/mailman/listinfo/python-list
