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

[Ethan Furman]

Oleg Broytman wrote:
> On Sat, Oct 06, 2012 at 05:04:44PM +0900, "Stephen J. Turnbull" <stephen at xemacs.org> wrote:
>>  > Eric Snow wrote:
>>  > > 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')
>>
>> How about a more general subst() method?  Indeed, it would need
>> keyword arguments for named components like ext, but I often do things
>> like "mv ~/Maildir/{tmp,new}/42" in the shell.  I think it would be
>> useful to be able to replace any component of a path.
> 
>    I think this would be overgeneralization. IMO there is no need to
> replace parts beyond drive/name/extension. To "replace" root or path
> components just construct a new Path.

And if your new path is exactly the same as the old, /except/ for the 
root?  Are you suggesting something like:

--> p = PureNTPath('c:/orders/12345/abc67890.dbf')
--> q = '//another_machine/share' + p.parts() + p.filename

?

~Ethan~