如何在 python 中从 Web 浏览器控制台运行命令? [英] How do I run command from web browser console in python?

问题描述

我最近尝试在 Web 浏览器中通过 python 运行命令，就像使用 chrome 开发人员工具一样.

I have recently been trying to run a command through python in a web browser, as if using chrome developer tools.

这在 chrome 中很容易做到，但我如何从 python 中做到呢?我不知道如何从 python 脚本复制它.我要运行的浏览器命令特定于我正在使用的网站，这就是我需要使用命令行的原因.

This is easy to do from chrome, but how would I do it from python? I have no idea how I would go about replicating this from a python script. The browser command I am wanting to run is specific to the website I am working with, which is why I need to use the command line.

如何在 python 3 中在浏览器命令行中重复运行命令?对不起，如果这是一个愚蠢的问题.谢谢！

How can I repsslicate running a command in the browser command line, in python 3? Sorry if this is a stupid question. Thanks!

我最终使用了硒，但遇到了一些问题.我要去的网站(roblox.com)在浏览器控制台中说我未经授权.我很确定我在登录时正确实施了身份验证 cookie.出于某种原因，我的一些数据没有加载，例如我的货币计数.

I ended up using selenium, but ran into some problems. The site I am traveling to( roblox.com ), says that I am Unauthorized in the browser console. I am pretty sure that I implemented the authentication cookies correctly though, as I am logged in. For some reason, some of my data just isn't loading, such as my currency count.

这可能不是问这样问题的地方，因为本论坛的成员对 roblox 一无所知，但也许这是我代码中的一个简单问题.

This probably isn't the place to ask a question like this, since the members of this forum know nothing of roblox, but maybe it's a simple problem in my code.

# my code
from selenium import webdriver
import time

driver = webdriver.Chrome('C:\\Users\KDJ\Documents\GameJoiner\chromedriver.exe')
options = webdriver.ChromeOptions()

driver.execute_cdp_cmd('Network.setUserAgentOverride', {"userAgent": 'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/83.0.4103.53 Safari/537.36'})
driver.execute_script("Object.defineProperty(navigator, 'webdriver', {get: () => undefined})")
options.add_experimental_option("excludeSwitches", ["enable-automation"])
options.add_experimental_option('useAutomationExtension', False)


URL = 'https://www.roblox.com/games'
driver.get(URL)
driver.add_cookie({'name' : '.ROBLOSECURITY', 'value' : Cookie})



driver.get(URL)

顺便提一下，您可能没有看到我定义了 Cookie 变量.这是因为我删除了它，因为这个 cookie 允许其他人登录我的帐户.

As a side note, you might not see me defining the Cookie variable. This is because I removed it, since this cookie allows others to log into my account.

推荐答案

您可以使用 Selenium 来做到这一点.使用 selenium，您可以编程模拟您的浏览器行为.这些是步骤:

You can use Selenium to do that. With selenium, you can programmatic emulate your browser behaviour. These are the steps:

• 根据您的操作系统下载chromedriver.将其解压缩到一个目录目录，例如/Users/me/Documents/MyPrograme/

• Download chromedriver according to your OS. Unzip it to a directory directory e.g. /Users/me/Documents/MyPrograme/

安装selenium:

python -m pip install selenium

• 用法示例:

# example.py

from selenium import webdriver

# Start Chrome Driver
chromedriver = 'Users/me/Documents/MyPrograme/chromedriver'

driver = webdriver.Chrome(chromedriver)

# Open the URL you want to execute JS
URL = 'https://www.example.com'
driver.get(URL)

# Execute JS

driver.execute_script("console.log(`Hello from Python`)")

有关示例和详细信息，请阅读 selenium 的文档.

For examples and details read selenium‘s documentation.

另一种方法是使用类似 RPA 的库，例如PyAutoGUI 或 RPA-Python，用于自动打开 chrome，发送键和命令以打开控制台，并将文本作为脚本命令发送.

Another way is to use RPA-like libraries, e.g. PyAutoGUI or RPA-Python, to automate opening of chrome, send keys and commands to open console and send texts as scripts-commands.

• 尝试克服 Selenium Chrome 中的 404

# Add headers

from selenium import webdriver
from selenium.webdriver.chrome.options import Options
opts = Options()

user_agent =  ('Mozilla/5.0 (Macintosh; Intel Mac OS X 10_10_1) '
'AppleWebKit/537.36 (KHTML, like Gecko) '
'Chrome/39.0.2171.95 Safari/537.36')
opts.add_argument(f'user-agent={user_agent}')

driver = webdriver.Chrome(chrome_options=opts)

• 模拟流程如果网站涉及登录.执行人类将采取的步骤.例如.一个网页，通过日志记录，查找输入和密码元素并模拟输入和点击/或键盘事件.
• 处理弹出窗口
  使用 driver.switchTo 弹出的任何框架.
• Dealing with pop ups
  Use driver.switchTo whatever frame that pops up.

# find element in your popup. Something like
dialog_name = 'Open Rebox?'
pop_element = driver.find_element_by_name(dialog_name)
pop = driver.switch_to.frame(pop_element)

# find what you need to click or use tab
# ...
pop.click()
# switch back to main
driver.switch_to.parent_frame()

• 查看 SO 中有关如何切换的示例

这篇关于如何在 python 中从 Web 浏览器控制台运行命令?的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！