This feels much too special purpose for a string method, and probably for anything in the standard library. I'm not sure when someone would want this.
But it's an only very sightly special case of integer composition ( https://en.wikipedia.org/wiki/Composition_(combinatorics)). And related to that, of course is integer partition. If we had a composition() function (maybe in itertools... but more likely in more-itertools given the minimalist philosophy of itertools itself), this problem is simply taking slices whose lengths are drawn from the composition. On Sat, Dec 14, 2019, 9:44 AM smfiles <1668151...@qq.com> wrote: > I think it's necessary to add a segment() method to str type or string > module. This method is used to split a string into m parts and return all > cases. With segment(), you can avoid tedious calculation and indexing if > you want to segment a string. > > For example: > > segment('1234', m=3) -> [('1', '2', '34'), ('1', '23', '4'), ('12', '3', > '4')] > segment('12345', m=3) -> [('1', '2', '345'), ('1', '23', '45'), ('1', > '234', '5'), ('12', '3', '45'), ('12', '34', '5'), ('123', '4', '5')] > > > I hope this proposal can be adopted. > _______________________________________________ > Python-ideas mailing list -- python-ideas@python.org > To unsubscribe send an email to python-ideas-le...@python.org > https://mail.python.org/mailman3/lists/python-ideas.python.org/ > Message archived at > https://mail.python.org/archives/list/python-ideas@python.org/message/VYDU3JF2MFFUUHU3XUCIAW3UXJGXZCKD/ > Code of Conduct: http://python.org/psf/codeofconduct/ >
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