On 5/2/2010 1:05 AM, Alf P. Steinbach wrote:
On 02.05.2010 06:06, * Aahz:
and sometimes
they rebind the original target to the same object.
At the Python level that seems to be an undetectable null-operation.
If you try t=(1,2,3); t[1]+=3, if very much matters that a rebind occurs.
Granted one could see something going on in a machine code or byte code
debugger. But making that distinction (doing nothing versus
self-assignment) at the Python level seems, to me, to be meaningless.
Please do not confuse things. Augmented *assignment* must be understood
as assignment. Failure to do so leads (and has lead) newbies into
confusion, and puzzled posts on this list.
Terry Jan Reedy
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