LayoutTests/http/tests/workers/service/resources/updating-fetch-worker.py

#!/usr/bin/env python3

import sys
from random import randint

sys.stdout.write('Content-Type: text/javascript\r\n\r\n')

randomId = ''
charset = 'ABCDEFGHIKLMNOPQRSTUVWXYZ0123456789'
for _ in range(0, 16):
    randomId += charset[randint(0, len(charset) - 1)]

sys.stdout.write(
    'let randomId = "{}";\n'
    'self.skipWaiting();\n'
    '\n'
    'self.addEventListener("fetch", (event) => {{\n'
    '    event.respondWith(new Response(null, {{status: 200, statusText: "Found"}}));\n'
    '}});\n'.format(randomId)
)