使用Python和Selenium:

from selenium.webdriver.common.keys import Keys
from selenium import webdriver
import time

driver = webdriver.Chrome('/usr/lib/chromium-browser/chromedriver')

notebook_url = ''
driver.get(notebook_url)

# run all cells
driver.find_element_by_tag_name('body').send_keys(Keys.CONTROL + Keys.F9)
time.sleep(5)

# click to stay connected
start_time = time.time()
current_time = time.time()
max_time = 11*59*60 #12hours

while (current_time - start_time) < max_time:
    webdriver.ActionChains(driver).send_keys(Keys.ESCAPE).perform()
    driver.find_element_by_xpath('//*[@id="top-toolbar"]/colab-connect-button').click()
    time.sleep(30)
    current_time = time.time()

我一直在寻找一个解决方案，直到我发现了一个Python 3脚本，它随机地来回移动鼠标并单击，总是在同一个地方。但这足以骗过协作实验室，让它以为我在笔记本上活动，它不会断开连接。

import numpy as np
import time
import mouse
import threading

def move_mouse():
    while True:
        random_row = np.random.random_sample()*100
        random_col = np.random.random_sample()*10
        random_time = np.random.random_sample()*np.random.random_sample() * 100
        mouse.wheel(1000)
        mouse.wheel(-1000)
        mouse.move(random_row, random_col, absolute=False, duration=0.2)
        mouse.move(-random_row, -random_col, absolute=False, duration = 0.2)
        mouse.LEFT
        time.sleep(random_time)


x = threading.Thread(target=move_mouse)
x.start()

sudo -H pip3 install <package_name>

你只需要用sudo(在你的本地机器上)运行它(因为它控制鼠标)，它就能工作，让你充分利用协作实验室的12小时会话。

学分:对于那些使用Colab (Pro):防止会话由于不活动而断开

下面的JavaScript代码适合我。感谢@artur.k.space。

function ColabReconnect() {
    var dialog = document.querySelector("colab-dialog.yes-no-dialog");
    var dialogTitle = dialog && dialog.querySelector("div.content-area>h2");
    if (dialogTitle && dialogTitle.innerText == "Runtime disconnected") {
        dialog.querySelector("paper-button#ok").click();
        console.log("Reconnecting...");
    } else {
        console.log("ColabReconnect is in service.");
    }
}
timerId = setInterval(ColabReconnect, 60000);

在Colab笔记本中，同时按Ctrl + Shift + I键。将脚本复制并粘贴到提示行中。然后在关闭编辑器之前按Enter。

通过这样做，该函数将每60秒检查一次，看看是否显示屏幕上的连接对话框，如果是，该函数将自动为您单击OK按钮。

我有一个问题与这些JavaScript函数:

function ClickConnect(){
    console.log("Clicked on connect button"); 
    document.querySelector("colab-connect-button").click()
}
setInterval(ClickConnect, 60000)

在实际点击按钮之前，他们会在控制台上打印“点击连接按钮”。

从这个问题的不同答案中可以看出，自从谷歌Colab推出以来，连接按钮的id已经改变了几次。将来也可能会改变。

如果你要复制这个问题的旧答案，它可能会说“点击连接按钮”，但它可能不会那样做。当然，如果单击不起作用，它将在控制台上打印一个错误，但是如果您可能不会意外地看到它呢?

所以你最好这样做:

function ClickConnect(){
    document.querySelector("colab-connect-button").click()
    console.log("Clicked on connect button"); 
}
setInterval(ClickConnect,60000)

你一定会看到它是否真的有效。

function ClickConnect(){
    console.log("Clicked on connect button"); 
    document.querySelector("connect").click() // Change id here
}
setInterval(ClickConnect,60000)

试试上面的代码。这对我很有用:)

我不相信JavaScript解决方案还能继续工作。我在我的笔记本里写了:

    from IPython.display import display, HTML
    js = ('<script>function ConnectButton(){ '
           'console.log("Connect pushed"); '
           'document.querySelector("#connect").click()} '
           'setInterval(ConnectButton,3000);</script>')
    display(HTML(js))

当你第一次执行Run all(在JavaScript或Python代码开始之前)时，控制台显示:

Connected to
wss://colab.research.google.com/api/kernels/0e1ce105-0127-4758-90e48cf801ce01a3/channels?session_id=5d8...

然而，每次JavaScript运行时，你都会看到console.log部分，但点击部分只是给出:

Connect pushed

Uncaught TypeError: Cannot read property 'click' of null
 at ConnectButton (<anonymous>:1:92)

其他人建议按钮名称已更改为# coab -connect-button，但这也会产生相同的错误。

After the runtime is started, the button is changed to show RAM/DISK, and a drop down is presented. Clicking on the drop down creates a new <DIV class=goog menu...> that was not shown in the DOM previously, with 2 options "Connect to hosted runtime" and "Connect to local runtime". If the console window is open and showing elements, you can see this DIV appear when you click the dropdown element. Simply moving the mouse focus between the two options in the new window that appears adds additional elements to the DOM, as soon as the mouse looses focus, they are removed from the DOM completely, even without clicking.