mapi.py

def write_metadata(identifier, metadata={}, target='metadata'):
    log_in_cookies = {'logged-in-sig': os.environ['LOGGED_IN_SIG'],
                      'logged-in-user': os.environ['LOGGED_IN_USER']}
    url = 'http://archive.org/metadata/%s' % identifier
    src = requests.get(url).json().get(target, {})
    dest = dict((src.items() + metadata.items()))
    json_patch = jsonpatch.make_patch(src, dest).patch
    patch = [{p['op']: p['path'], 'value': p['value']} for p in json_patch] 
    if patch == []:
        return 'no changes made to Metadata.'
    params = {'-patch': json.dumps(patch), '-target': target}
    r = requests.patch(url, params=params, cookies=log_in_cookies)
    return r.content