import json def main(request, response): headers = [("Content-Type", "text/html")] body = """ """ % json.dumps({ "dest": request.headers.get("sec-fetch-dest", ""), "mode": request.headers.get("sec-fetch-mode", ""), "site": request.headers.get("sec-fetch-site", ""), "user": request.headers.get("sec-fetch-user", ""), }) return headers, body