Python script to rename files in directory, transforming spaces to hyphens and the chars to lowercase

rename.py

import os

""" 
Renames the filenames within the same directory to be Unix friendly
(1) Changes spaces to hyphens
(2) Makes lowercase (not a Unix requirement, just looks better ;)

Usage:
python rename.py
"""

path =  os.getcwd()
filenames = os.listdir('./')

for filename in filenames:
    os.rename(filename, filename.replace(" ", "-").lower())