[Python-ideas] PEP 428 - object-oriented filesystem paths

[Ethan Furman]

Eric Snow wrote:
> On Fri, Oct 5, 2012 at 5:48 PM, Antoine Pitrou <solipsis at pitrou.net> wrote:
>> On Fri, 05 Oct 2012 14:38:57 -0700
>> Ethan Furman <ethan at stoneleaf.us> wrote:
>>> Say I have a .dbf table as PureNTPath('c:\orders\12345\abc67890.dbf'),
>>> and I export it to .csv in the same folder; how would I transform the
>>> above PureNTPath's ext from 'dbf' to 'csv'?
>> Something like:
>>
>>>>> p = PureNTPath('c:/orders/12345/abc67890.dbf')
>>>>> p.parent()[p.name.split('.')[0] + '.csv']
>> PureNTPath('c:\\orders\\12345\\abc67890.csv')
>>
>> Any suggestion to ease this use case a bit?
> 
> Each namedtuple has a _replace() method that's is used to generate a
> new instance with one or more attributes changed.  We could do
> something similar here:
> 
>>>> p = PureNTPath('c:/orders/12345/abc67890.dbf')
>>>> p.replace(ext='.csv')
> PureNTPath('c:\\orders\\12345\\abc67890.csv')

+1