[Python-ideas] Allow parentheses to be used with "with" block

[Neil Girdhar]

If you read through the rest of the messages, you'll see that it seems that
we can have parentheses in an LL(1) grammar.

Best,

Neil

On Mon, Feb 16, 2015 at 9:14 PM, Stephen J. Turnbull <stephen at xemacs.org>
wrote:

> Neil Girdhar writes:
>
>  > I agree with that idea in general, but I do think that a with statement
>  > having parentheses would not be confusing for users to parse even
> though it
>  > would not be LL(1).
>
> In this case, purity beat practicality, because practicality beats
> purity on a higher level.
>
> On the lower level, sticking to a pure LL(1) grammar rules out some
> practical possibilities that some folks think are nice.  On the higher
> level, in theory we'd like Python to provide concise expressions for
> all constructs when human readers can handle the concise expression
> fluently, but in practice the LL(1) rule is simple to follow (at least
> for Python maintainers who actually hack the parser!)
>
> Unfortunately (?!) it also prevents a lot of bike-shedding fun.<wink />
>
>
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