Am Freitag, 10. September 2004 01:14 schrieb John Schinnerer:
Anyone know of more info anywhere on updating existing class instances when the class (in a python product) is modified by adding some properties?
Also, you could just add class variables to your object's class which have sensible default.
I don't understand - previous instances will not have the properties unless they are updated, correct?
not exactly, I think. If you change the definition of the class to have new attributes, every instances of that class will have these attributes, too. Of course, they will only have their default values, all the same. but at least you can be sure that every instance has the attributes. next step would be to touch every instance to give them their own values. this might be a simple as class MyClass: attr = None # new attr2 = '' # new def updateAttr(self, attr, attr2): self.attr = attr self.attr2 = attr2 Than you might write a PythonScript to find your instances and call the updateAttr() method on them. Hope that helps a bit, Sascha