[Python-Dev] PEP 340: Breaking out.

[Greg Ewing]

Seems to me it should be up to the block iterator whether
a break statement gets caught or propagated, since it's
up to the block iterator whether the construct behaves
like a loop or not.

This could be achieved by having a separate exception
for breaks, as originally proposed.

If the iterator propagates the Break exception back out,
the block statement should break any enclosing loop.
If the iterator wants to behave like a loop, it can
catch the Break exception and raise StopIteration
instead.

-- 
Greg Ewing, Computer Science Dept, +--------------------------------------+
University of Canterbury,	   | A citizen of NewZealandCorp, a	  |
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