[Python-ideas] pathlib.Path.walk

[INADA Naoki]

On Mon, Apr 3, 2017 at 5:33 PM, Michel Desmoulin
<desmoulinmichel at gmail.com> wrote:
> Like os.walk, but from a Path instance.
>
> We have Path.iterdir, but it's not recursive. Which you use either
> os.scandir, or os.walk. In any case, you end up doing:
>
> import os
> import pathlib
>
> directory = pathlib.Path(get_dir())
>
> # do things with directory
>
> for root, dirs, files os.walk(directory):
>     root = Path(root)
>     for f in files:
>         f = root / f
>             # do something with file
>
> Which is not that bad, but you waste a lot of time discovering how to do
> that since you look first for something like Path.walk.
>

OK, but what Path.walk should be return?
If all of dirs and files are Path object, it will have significant
performance overhead.

for root, dirs, files in directory.walk():
    # all dirs are path object, but not used.
    for f in files:
        f = root / f  # And Path overhead can be avoided for files too.