python asyncio 使用pyppeteer 绑定回调函数

 browser = await launch(**start_parm)
    page = await browser.newPage()
    tk = tkinter.Tk()
    width = tk.winfo_screenwidth()
    height = tk.winfo_screenheight()
    tk.quit()
    await page.setViewport(viewport={'width': width, 'height': height})
    js_text = """
() =>{ 
    Object.defineProperties(navigator,{ webdriver:{ get: () => false } });
    window.navigator.chrome = { runtime: {},  };
    Object.defineProperty(navigator, 'languages', { get: () => ['en-US', 'en'] });
    Object.defineProperty(navigator, 'plugins', { get: () => [1, 2, 3, 4, 5,6], });
 }
    """
    await page.evaluateonNewdocument(js_text)  # 本页刷新后值不变，自动执行js
    # await page.goto('https://login.taobao.com/member/login.jhtml?redirect_url=https://s.taobao.com/search')
    await page.goto('https://news.163.com/')

**start_parm是传入浏览器的参数可以自行设置

js注入防止被webdrive检测到

给任务绑定回调函数

def callback(t):  #对象t是在执行绑定的task
    resp = t.result()  #t.result()是return返回的数据
    print(resp)

拿到数据可以根据数据自行选择数据解析 

最后启动主程序

task = asyncio.ensure_future(main()) #创建任务

if __name__ == '__main__':
    loop =asyncio.get_event_loop()  #创建循环对象
    task.add_done_callback(callback)#绑定回调函数
    loop.run_until_complete(task)