Remove empty directories on Windows

#!/bin/env python
import os
import sys

# Windows Empty directory cleaner
# Drag and drop a root folder on top of this script to remove all empty directories within the hierarchy there below.
# Also accepts the root level directory as a trailing command line argument.

confirm = False
path = r'%s' % sys.argv[ -1 ]

def rm( folder ):
    """Removes a folder"""

    try:
        os.rmdir( r'%s' % folder )
        print '--[ Deleted %s' % folder
        return True
    except:
        return False

for folder,subfolder,files in os.walk( path ):
    if ( subfolder == [] and files == [] ):
        if not confirm:
            answer = raw_input( '--[Confirm] Remove: %s ? (yes/no/all)' % folder )

            if answer in ( 'all', 'All', 'ALL', 'a' ):
                confirm = True
                rm( folder )
            elif answer in ( 'yes', 'YES', 'Yes', 'y'):
                rm( folder )
            else:
                continue
        else:
            rm( folder )

raw_input( '--[Done] Press any key to continue' )