[Python-Dev] os.path.walk() lacks 'depth first' option

[Guido van Rossum]

> Recently I realized that there is no easy way to
> walk a directory tree and rename each directory and file.
> The standard os.path.walk() function does a breadth first walk.

This idea has merit, although I'm not sure I'd call this depth first;
it's more a matter of pre-order vs. post-order, isn't it?

But I ask two questions:

- How often does one need this?

- When needed, how hard is it to hand-code a directory walk?  It's not
  like the body of the walk() function is rocket science.

--Guido van Rossum (home page: http://www.python.org/~guido/)