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Call by binding [was Re: [Tutor] beginning to code]


On Tue, Sep 26, 2017 at 5:35 AM, Marko Rauhamaa <marko at pacujo.net> wrote:
> Chris Angelico <rosuav at gmail.com>:
>
>> On Tue, Sep 26, 2017 at 12:26 AM, Marko Rauhamaa <marko at pacujo.net> wrote:
>> Sorry, that was my bad in the terminology. But where do you get that
>> all Python expressions evaluate to pointers?
>
> What do they evaluate to if not pointers? Anton's "identities" would
> work, too. "Address" would do, as well. I have previously proposed the
> term "leash." Call it "link" or "handle" or "arrow" if you want to.
>
> The term used isn't important. What's important is to understand that
> each expression and subexpression produces and operates on pointers.

They evaluate to objects. Not to pointers to objects. Not to
references to objects. To objects. Expressions evaluate to actual
objects, and when you assign "name = value", you bind the name to the
object that value evaluates to.

ChrisA