What I mean by this is I'd like to implement behavior similar to that of the datetime class.
When you create an instance of datetime, the resulting object shows up as:
foo still maintains the fields:
But foo itself appears to have a "value" (which shows the day-month-year hour minute seconds values). This behavior is nice since it lets you do things like "foo1 - foo2" where both foo1 and foo2 are datetime objects and the resulting value is also a datetime.
I'm unsure of how to get this same behavior with a custom class of my own creation? I'm trying to implement my own time keeping class for astronomical purposes, so this kind of behavior would be extremely useful. I had originally attempted to use datetime as a superclass, however datetime appears to be sealed and so I cannot inherit from it unfortunately.
Any help would be greatly appreciated!