requests API >= 0.13.6 mandates passing prefetch=False when accessing the raw response as a file like object... (see https://github.com/kennethreitz/requests/issues/825 )

dlfree.py

import requests
import re
import os
import sys

def getFile( id ):

    url = 'http://dl.free.fr/%s' % id

    # get initial link
    r = requests.get(url)
    contents = r.content
    href = re.findall(r'href="([^"]+)">Télécharger ce fichier', contents )[0]
    filename = os.path.basename( href )
    cookies = r.cookies

    # start download
    print "downloading", filename 

    download = requests.get(href, cookies = cookies, prefetch=False).raw

    CHUNK = 64 * 1024
    with open(filename, 'wb') as fp:
        while True:
            print '.',
            sys.stdout.flush().
            chunk = download.read(CHUNK)
            if not chunk: break
            fp.write(chunk)

if __name__ == '__main__':
    if len(sys.argv)>1:
        getFile( sys.argv[1] )