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Date: Tue, 18 Jun 2013 20:22:18 +1000
Subject: Re: Variables versus name bindings [Re: A certainl part of an if() structure never gets executed.]
From: Chris Angelico <rosuav@gmail.com>
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Xref: csiph.com comp.lang.python:48617

On Tue, Jun 18, 2013 at 7:51 PM, =CD=DF=EA=EF=F2 <support@superhost.gr> wro=
te:
> =D3=F4=E9=F2 18/6/2013 12:05 =EC=EC, =EF/=E7 Steven D'Aprano =DD=E3=F1=E1=
=F8=E5:
>
>> Names are *always* linked to objects, not to other names.
>>
>> a =3D []
>> b =3D a  # Now a and b refer to the same list
>> a =3D {} # Now a refers to a dict, and b refers to the same list as befo=
re
>
>
> I see, thank you Steven.
>
> But since this is a fact how do you create complicated data structures th=
at
> rely on various variables pointing one to another liek we did in C++(cann=
ot
> recall their names) ?

Why do you need to? Linked lists, trees, and so on are just tools.
They're usually used to implement data structures like mappings,
growable arrays, lists that can have elements inserted into them, etc,
etc. Python does these sorts of things in better ways. You should not
need to worry about memory locations, pointers, etc. Now, if you want
to have one object reference another, that can be done in plenty of
ways. Check the Python tutorial.

ChrisA