Paul Rubin wrote:
Nick Coghlan <[EMAIL PROTECTED]> writes:

Trying to push it a level further (down to expressions) would, IMO, be
a lot of effort for something which would hurt readability a lot.


I think we should just try to do things in a simple and general way
and not try to enforce readability.

Trying to embed a suite in a Python expression is anything but simple, though :)

Attaching an optional local suite to every statement can actually be done quite cleanly (so long as the parser is up to the job).

Doing the substitutions on the whole statement using distinct names will work just as well as doing the substitutions directly on the subexpressions using duplicate names, and moves the 'unimportant' bits after the whole thing, instead of sprinkling them throughout the statement.

It seems a statement based approach would be:
  1. Easier to read
  2. Less work to implement
  3. Consistent with the rest of the language
  4. Works for any statements, including compound statements

The only disadvantage relative to expression local namespaces would be that you would still have to watch for namespace conflicts within the statement - and I have grave doubts about the structure of any statement which has that problem.

If statement local namespaces were pursued, I would see expression local namespaces as something which hurt readability a lot without providing any new functionality.

Cheers,
Nick.

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Nick Coghlan   |   [EMAIL PROTECTED]   |   Brisbane, Australia
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            http://boredomandlaziness.skystorm.net
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