On Wed, Apr 8, 2009 at 12:55 AM, spir
<denis.spir@free.fr> wrote:
Le Tue, 7 Apr 2009 23:38:21 +1000,
Steven D'Aprano <steve@pearwood.info> s'exprima ainsi:
> > What's the reason why
> > name = value if condition
> > is invalid? Meaning: there _must_ be an else clause.
> Because "value if condition else other" is an expression, not a
> statement, and thus *must* have a value.
>
> name = value if condition
>
> only has a value sometimes, and so is invalid [...]
Yes, thank you! That's the explaination I was looking for.
I meant to use the above formulation for updating already defined variables. Indeed, python does not make the difference I have in mind ;-).
As a side note,
if condition: name = value
(where 'name' is already registered) is the only case when I do not indent a block, for the reason that it means for me the same as the above invalid one-liner.
Denis
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