[Python-ideas] str.rreplace

[Chris Angelico]

On Sat, Jan 25, 2014 at 6:16 PM, Serhiy Storchaka <storchaka at gmail.com> wrote:
> 24.01.14 23:04, MRAB написав(ла):
>
>> On 2014-01-24 20:48, Chris Angelico wrote:
>>>
>>> On Sat, Jan 25, 2014 at 7:33 AM,
>>> <random832 at fastmail.us> wrote:
>>>>>>>
>>>>>>> 'aaa'[::-1].replace('aa'[::-1],'x'[::-1])[::-1]
>>>>
>>>> 'ax'
>>>
>>>
>>> It makes me happy when the [::-1] smiley gets used that many times to
>>> solve a problem. Very happy.
>>>
>>> Happy that it isn't in _my_ code, to be precise...
>>>
>> It's probably not as efficient, either!
>
>
> Of course it is less efficient than hypothetical rreplace, but I suppose it
> is most efficient way in current Python.

Is it possible to use a reversed iterator, filter it through something
that does the replacement, and then do some sort of reversed ''.join()
at the end? It'd still be ugly though.

ChrisA