Laszlo Zsolt Nagy wrote:
My problem is about properties and the virtuality of the methods. I
would like to create a property whose get and set methods
are virtual.
You might find the following function useful, which I
developed for use in PyGUI.
def overridable_property(name, doc = None):
"""Creates a property which calls methods get_xxx and set_xxx of
the underlying object to get and set the property value, so that
the property's behaviour may be easily overridden by subclasses."""
getter_name = intern('get_' + name)
setter_name = intern('set_' + name)
return property(
lambda self: getattr(self, getter_name)(),
lambda self, value: getattr(self, setter_name)(value),
None,
doc)
Usage example:
class MyClass(object):
...
spam = overridable_property('spam', "Favourite processed meat product")
...
--
Greg Ewing, Computer Science Dept,
University of Canterbury,
Christchurch, New Zealand
http://www.cosc.canterbury.ac.nz/~greg
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