Concat css files

concat.py

#!/usr/bin/python

import os

def main():
    data = str()
    for root, dirs, files in os.walk("."):
        for file in files:
            path = os.path.join(root,file)
            print path
            if path.endswith("css"):
                data += open(path,"r").read()
    open("out.ccs","w").write(data)



if __name__ == "__main__":
    main()