Apart from the missing comma after 'big' this is already supported.
The time machine strikes again!
--Guido
On Wed, May 28, 2008 at 6:23 PM, Daniel Wong <[EMAIL PROTECTED]> wrote:
> Hi,
>
> Are there plans for introducing syntax like this:
>
> (a, (b[2], c)) = ('big' ('red', 'dog'))
>
> It seems quite doable, because Professor Hillfinger at UC Berkeley
> created pyth, a dialect of Python, which has this feature. See page 10
> of the spec he created for his students to implement the language:
>
> http://inst.eecs.berkeley.edu/~cs164/sp08/docs/pyth.pdf
>
> Of course, this idea could also be applied to 'for' constructs (loops,
> list comprehensions, and generators) where assignments are implicit.
>
> Parallel looping (esp using zip) is a great use case for this. Here's
> a case that's come up more than once for me that "structured"
> assignments would solve really nicely:
>
> for n, (a, b) in enumerate(list_of_pairs): ...
>
> Currently, I must do the following instead:
>
> for n, pair in enumerate(list_of_pairs):
> a, b = pair
> ...
>
> This isn't such a great solution, because there's more indirection
> with the introduction of an otherwise useless variable; and (less
> significantly) there's an extra line of code that doesn't actually
> compute anything.
>
> Thoughts?
>
> Daniel
>
> PS: Sorry if this has already been discussed; I'm new to this list and
> I didn't see this mentioned in PEP 3099, unless it's covered under the
> LL(1) clause.
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--
--Guido van Rossum (home page: http://www.python.org/~guido/)
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