On 9/24/19 4:54 AM, Richard Musil wrote:
On Tue, Sep 24, 2019 at 5:55 AM Stephen J. Turnbull <turnbull.stephen.fw@u.tsukuba.ac.jp mailto:turnbull.stephen.fw@u.tsukuba.ac.jp> wrote:
Richard Musil writes: > The implementation can be an additional attribute on an identifier That's not an implementation yet. From the point of view of the Python program, an identifier is an entry in a namespace. To describe an implementation of something that acts on identifiers, you need to say what namespaces are subject to this action, and what happens when the action might "cross" namespaces.I am afraid this is where my abstraction ends, and my ignorance of Python internal implementation begins. I cannot answer those questions.
Richard
I think part of the issue is the idea that identifiers have attributes. In Python, identifiers are basically just labels in a namespace that bind to objects (and multiple labels can bind to the same object).
Basically, in most cases the identifier is a key to a dictionary, the entry associated with it being a binding to an object.
To add an 'attribute' to that identifier requires major changes in how that works and also will interfere with a namespace being able to override how that binding works.