#!/usr/bin/env python

import os
import string
import sys

sys.setrecursionlimit(32000)

def stuff(root, dir):
        if (dir != string.lower(dir)):
                try:
                        os.rename(root+'/'+dir, root+'/'+string.lower(dir))
                        print "move "+dir+" :"+string.lower(dir)
                except OSError:
                        pass
                return 1
        else:
                return 0

def start(treetop):
        for root,dirs,files in os.walk(treetop):
                for dir in dirs:
                        if stuff(root, dir):
                                start(treetop)
        for root,dirs,files in os.walk(treetop):
                for file in files:
                        stuff(root, file)
start('/tmp/Blah')