Ethan Furman ethan at stoneleaf.us
Wed May 11 16:51:31 EDT 2016

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On 05/11/2016 01:44 PM, Serhiy Storchaka wrote:

>> os.path
>> '''''''
>>
>> The various path-manipulation functions of ``os.path`` [#os-path]_
>> will be updated to accept path objects. For polymorphic functions that
>> accept both bytes and strings, they will be updated to simply use
>> code very much similar to
>> ``path.__fspath__() if  hasattr(path, '__fspath__') else path``. This
>> will allow for their pre-existing type-checking code to continue to
>> function.
>
> I afraid that this will hit a performance. Some os.path functions are
> used in tight loops, they are hard optimized, and adding support of path
> protocol can have visible negative effect.

Do you have an example of os.path functions being used in a tight loop?

--
~Ethan~

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