#! /usr/bin/env python

 import os

 import fnmatch

 pattern_list = ['*.jpg',

                 '*.jpeg',

                 '*.gif',

                 '*.png',

                 '*.tiff',

                ]

 class Bunch:

     def __init__(self, **kwds): self.__dict__.update(kwds)

 arg = Bunch(recurse=True, pattern_list=pattern_list, return_folders=0, results={})

 def visit(arg, dirname, files):

     # Append to arg.results all relevant files

     for name in files:

         fullname = os.path.normpath(os.path.join(dirname, name))

         fullname = fullname.rstrip()

         if arg.return_folders or os.path.isfile(fullname):

             normalized_filename = name.lower()

             for pattern in arg.pattern_list:

                 if fnmatch.fnmatch(normalized_filename, pattern):

                     arg.results[name] = fullname

                     break

     # Block recursion if disallowed

     if not arg.recurse: files[:]=[]

 root = "/home/sam/images"

 os.path.walk(root, visit, arg)

 print arg.results

 print arg.results.keys()