Walking recursivly through a directory-structure

[Alex]

I wanted to learn to use os.path.walk, too, so I wrote a little function
that takes a directory and makes a graph out of all the files and
sub-directories below it:

Hope this helps.
Alex.

import os

class Directory:

    def __init__ (self, path):
        self.path = path
        self.directory = {self.path: {}}
        self.directory_pointers = {self.path: self.directory[self.path]}
        os.path.walk (self.path, self.walk_callback, None)

    def walk_callback (self, args, directory, files):
        directory_list = self.directory_pointers[directory]
        self.directory_pointers[directory] = directory_list
        for file in files:
            file = os.path.join (directory, file)
            directory_list[file] = {}
            if os.path.isdir (file):
                self.directory_pointers[file] = directory_list[file]
                
if __name__ == '__main__':
    t = Directory ('/afs/athena.mit.edu/user/a/l/alex_c/mail')
    import pprint
    pprint.pprint (t.directory)