[Python-Dev] file system path protocol PEP (original) (raw)

Serhiy Storchaka storchaka at gmail.com
Wed May 11 16:44:36 EDT 2016

On 11.05.16 19:43, Brett Cannon 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.

I suggest first implement other changes and then look whether it is worth to add support of path protocol in os.path functions.

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