python版本的 playwright , 如何拦截请求,替换响应内容

from playwright.sync_api import Playwright, sync_playwright

def request_interceptor(route, request):

    logger.info(request.url)

    if 'api.js' in request.url:
        # 替换响应内容
        route.fulfill(
            status=200,
            body=js_content,
            headers={
                'Access-Control-Allow-Origin': '*',
                'content-type': 'application/javascript; charset=UTF-8'}
        )
    else:
        # 继续原始请求
        route.continue_()

    with sync_playwright() as p:
        browser = p.firefox.launch(headless=False, timeout=12000)

        page = browser.new_page()
        page.route('**/*', request_interceptor)

          page.goto('http://example.com')