On Thu, Feb 21, 2008 at 11:27 PM, Andrew Dalke
<[EMAIL PROTECTED]> wrote:
> On Feb 22, 2008, at 2:25 AM, Guido van Rossum wrote:
> > What syntax would you allow instead? Just del variable, variable, ...?
>
> Yes. These are and should be legal
>
> del a, b[1], c.d
> del (e+f).g[9]().h
>
> but I think this should not be legal
>
> del a, (b, c)
>
> That should raise
>
> SyntaxError: can't delete tuple
>
> and I would also like it if the following raised the same error
>
> del (a, b)
>
> but people use it now and I can see that perhaps, like with the from
> statement, using '()' for long expressions is useful
>
> del (some_very_large_variable_name[1],
> another_large_variable_name[2].with_attribute)
Well, you could rewrite that as two del statements of course... The
only use I can think if would be
del (very_long_name.
very_long_attribute)
> I also think
>
> del a,
>
> should not be legal ("SyntaxError: trailing comma not allowed without
> surrounding parentheses"?), but that's getting into my own personal
> preferences.
These all make sense to me, but at the same time it seems such a minor
issue that I'm not sure we should bother. It would probably end up
being more custom syntax -- right now it just uses exprlist in the
grammar and is limited to assignment targets by the compiler.
--
--Guido van Rossum (home page: http://www.python.org/~guido/)
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