An object is an instance (or not)?
marfig at gmail.com
Wed Jan 28 01:17:31 CET 2015
In article <mailman.18191.1422400930.18130.python-list at python.org>,
ned at nedbatchelder.com says...
> A common mistake is to believe that "OOP" is a well-defined term. It's
> not it's a collection of ideas that are expressed slightly differently
> in each language.
A common mistake is thinking just because OOP has different
implementations, it doesn't have a cohesive set of well described rules
and its own well defined terminology.
> I don't know what a "not fully realized object" is.
A fully realized object, in an object oriented paradigm, is an object
containing or pointing to data and the methods to act on that data. It's
an instance of a class.
A *not* fully realized object is possible in Python, since Classes are
first-class objects, despite not being able to participate in OOP.
> What does "participate in OOP" mean?
Means the object is capable of participating in inheritance and/or
polymorphism. An instance of an object is capable of doing so, per its
class definitions. Whereas a Python class object is not.
>>> class Master:
>>> class Sub(Master):
TypeError: func() missing 1 required positional argument: 'self'
But somehow I think you knew the answer to all these questions and were
instead being snarky.
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