Flatten complex directory structure in Python

I want to move files from a complex directory structure to just one place. For example i have this deep hierarchy:

foo/
    foo2/
        1.jpg
    2.jpg
    ...

I want it to be:

1.jpg
2.jpg
...

My current solution:

def move(destination):
    for_removal = os.path.join(destination, '\\')
    is_in_parent = lambda x: x.find(for_removal) > -1
    with directory(destination):
        files_to_move = filter(is_in_parent,
                               glob_recursive(path='.'))
    for file in files_to_move:
        shutil.move(file, destination)

Definitions: directory and glob_recursive. Note, that my code only moves files to their common parent directory, not an arbitrary destination.

How can i move all files from a complex hierarchy to a single place succinctly and elegantly?

Run recursively through directory, move the files and launch move for directories:

import shutil
import os

def move(destination, depth=None):
    if not depth:
        depth = []
    for file_or_dir in os.listdir(os.path.join([destination] + depth, os.sep)):
        if os.path.isfile(file_or_dir):
            shutil.move(file_or_dir, destination)
        else:
            move(destination, os.path.join(depth + [file_or_dir], os.sep))