Augument assignment versus regular assignment

[Piet van Oostrum]

>>>>> Antoon Pardon <apardon at forel.vub.ac.be> (AP) wrote:

>AP> Well I'll start on an possitive note and accept this. Now I'd like you
>AP> to answer some questions.

>AP> 1) Do you think the langauge reference makes it clear that this is how
>AP>    the reader has to understand things.

Yes.

>AP> 2a) In case you answer yes to question (1). Can you explain me how
>AP>     I have to read the language reference in order to deduce this
>AP>     is indeed the way things should be understood.

Just read what it says. `It is only evaluated once' is quite clear I would
say. Your problem is that you thought __setitem__ is part of evaluation,
but it isn't. It is part of assignment, while __getitem__ is part of
evaluation. See the definitions of __getitem__ and __setitem__ in the
language reference manual.

-- 
Piet van Oostrum <piet at cs.uu.nl>
URL: http://www.cs.uu.nl/~piet [PGP 8DAE142BE17999C4]
Private email: piet at vanoostrum.org