What are the practical uses for this? I don't recall having done this in my 
soon 20 years career.  

> On 14 Dec 2019, at 15:42, 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.
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