WalkDir is a library of tools designed to make it easy to tweak the output of os.walk to suit a variety of common filesystem manipulation tasks. It is designed as an itertools style pipelining library so that the filtering elements can be used with underlying iterators other than os.walk (e.g. to work with a remote system where os.listdir() and os.stat() can't be used directly, but you can use ssh or rsync or a similar tool to get a remote directory listing)