[Python-ideas] pathlib suggestions

[Todd]

On Wed, Jan 25, 2017 at 10:18 AM, Petr Viktorin <encukou at gmail.com> wrote:

> On 01/25/2017 04:04 PM, Todd wrote:
>
>> On Wed, Jan 25, 2017 at 12:25 AM, Stephen J. Turnbull
>> <turnbull.stephen.fw at u.tsukuba.ac.jp
>> <mailto:turnbull.stephen.fw at u.tsukuba.ac.jp>> wrote:
>>
>>     I'm just going to let fly with the +1s and -1s, don't take them too
>>     seriously, they're basically impressionistic (I'm not a huge user of
>>     pathlib yet).
>>
>>     Todd writes:
>>
>>      > So although the names are tentative, perhaps there could be a
>>     "fullsuffix"
>>      > property to return the extensions as a single string,
>>
>>     -0      '.'.join(p.suffixes) vs. p.fullsuffix?  TOOWTDI says no.  I
>>             also don't really see the use case.
>>
>>
>> The whole point of pathlib is to provide convenience functions for
>> common path-related operations.  It is full of methods and properties
>> that could be implemented other ways.
>>
>> Dealing with multi-part extensions, at least for me, is extremely
>> common.  A ".tar.gz" file is not the same as a ".tar.bz2" or a
>> ".svg.gz".  When I want to find a ".tar.gz" file, having to deal with
>> the ".tar" and ".gz" parts separately is nothing but a nuisance.  If I
>> want to find and extract ".rar" files, I don't want ".part1.rar" files,
>> ".part2.rar" files, and so on.  So for me dealing with the extension as
>> a single unit, rather than individual parts, is the most common  approach.
>>
>
> But what if the .tar.gz file is called "spam-4.2.5-final.tar.gz"?
> Existing tools like glob and endswith() can deal with the ".tar.gz"
> extension reliably, but "fullsuffix" would, arguably, not give the answers
> you want.
>


I wouldn't use it in that situation.  The existing "suffix" and "stem"
properties also only work reliably under certain situations.


>
> Perhaps more specialized tools would be useful, though, for example:
>     repacked_path = original_path.replace_suffix(".tar.gz", ".zip")
>
>
That is helpful if I want to rename, not if I want to (for example)
uncompress a file.
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mail.python.org/pipermail/python-ideas/attachments/20170125/9a1dcaed/attachment-0001.html>