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Wed Jun 4 16:40:14 CEST 2014 · https://mail.python.org/pipermail/python-dev/2014-June/134752.html

04.06.14 17:02, Paul Moore написав(ла):
> On 4 June 2014 14:39, Serhiy Storchaka <storchaka at gmail.com> wrote:
>> I think than breaking O(1) expectation for indexing makes the implementation
>> significant incompatible with Python. Virtually all string operations in
>> Python operates with indices.
>
> I don't use indexing on strings except in rare situations. Sure I use
> lots of operations that may well use indexing *internally* but that's
> the point. MicroPython can optimise those operations without needing
> to guarantee O(1) indexing, and I'd be fine with that.

Any non-trivial text parsing uses indices or regular expressions (and 
regular expressions themself use indices internally).

It would be interesting to collect a statistic about how many indexing 
operations happened during the life of a string in typical (Micro)Python 
program.

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[Python-Dev] Internal representation of strings and Micropython