Internal Program Version: scandir  1.10.0

'scandir()' is a directory iteration function like 'os.listdir()',
except that instead of returning a list of bare filenames, it yields
'DirEntry' objects that include file type and stat information along
with the name. Using 'scandir()' increases the speed of 'os.walk()'
by 2-20 times (depending on the platform and file system) by avoiding
unnecessary calls to 'os.stat()' in most cases.

https://github.com/benhoyt/scandir