Prune empty directories in Subversion checkout

prune.py

import os

swept = []

for root, dirs, files in os.walk('.', topdown=False):
    if root.find('/.svn/') > 0: continue
    if files: continue
    content = False
    for dir in dirs:
        if dir != '.svn' and os.path.join(root, dir) not in swept:
            content = True
    if content: continue
    os.system('svn delete ' + root)
    swept.append(root)