[Python-Dev] PEP 471 (scandir): Poll to choose the implementation (full C or C+Python)

[Serhiy Storchaka]

On 13.02.15 12:07, Victor Stinner wrote:
> TL,DR: are you ok to add 800 lines of C code for os.scandir(), 4x
> faster than os.listdir() when the file type is checked?

You can try to make Python implementation faster if

1) Don't set attributes to None in constructor.

2) Implement scandir as:

def scandir(path):
     return map(partial(DirEntry, path), _scandir(path)).

3) Or pass DirEntry to _scandir:

def scandir(path):
     yield from _scandir(path, DirEntry)