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The "loop and a half"

bartc bc at freeuk.com
Wed Oct 4 09:14:38 EDT 2017 
On 04/10/2017 14:02, Robin Becker wrote:
> On 04/10/2017 11:57, Rhodri James wrote:
>> On 04/10/17 10:01, Robin Becker wrote:
>>> Given the prevalence of the loop and a half idea in python I wonder 
>>> why we don't have a "do" or "loop" statement to start loops without a 
>>> test.
>>
>> See PEP 315.  Guido's rejection note is here:
>> https://mail.python.org/pipermail/python-ideas/2013-June/021610.html
>>
> seems fair enough; I suppose the cost is negligible or perhaps there's 
> peephole optimization for this common case.

Read the thread. Not having a dedicated feature means I counted at least 
half a dozen different ideas for implementing what the OP really wanted 
to do, which was expressed using C-like syntax. None of which were as 
obvious.

And that C-like one worked because it could use an assignment within a 
while-condition.

-- 
bartc
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