python – 如何在selenium中覆盖默认的chrome命令行开关集

默认情况下,将使用此命令行运行chrome：

"C:\Program Files (x86)\Google\Chrome\Application\chrome.exe"
--disable-hang-monitor
--disable-prompt-on-repost
--dom-automation
--full-memory-crash-report
--no-default-browser-check
--no-first-run
--disable-background-networking
--disable-sync
--disable-translate
--disable-web-resources
--safebrowsing-disable-auto-update
--safebrowsing-disable-download-protection
--disable-client-side-phishing-detection
--disable-component-update
--disable-default-apps
--enable-logging
--log-level=1
--ignore-certificate-errors
--no-default-browser-check
--test-type=ui
--user-data-dir="C:\Users\nik\AppData\Local\Temp\scoped_dir1972_4232"
--testing-channel=ChromeTestingInterface:1972.1
--noerrdialogs
--metrics-recording-only
--enable-logging
--disable-zero-browsers-open-for-tests
--allow-file-access
--allow-file-access-from-files about:blank

我需要覆盖(删除)所有命令–disable- *,因为没有等效的命令–enable- *.

最后,我想用这个命令行运行浏览器：

"C:\Program Files (x86)\Google\Chrome\Application\chrome.exe"    
--dom-automation
--full-memory-crash-report
--no-first-run
--safebrowsing-disable-auto-update
--safebrowsing-disable-download-protection
--enable-logging
--log-level=1
--ignore-certificate-errors
--test-type=ui
--user-data-dir="C:\Users\nik\AppData\Local\Temp\scoped_dir1972_4232"
--testing-channel=ChromeTestingInterface:1972.1
--noerrdialogs
--metrics-recording-only
--enable-logging
--allow-file-access
--allow-file-access-from-files about:blank

例如,我尝试使用翻译信息栏运行浏览器.
我找到了选项–enable-translate.

capabilities = DesiredCapabilities.CHROME.copy()
capabilities['chrome.switches'] = ['--enable-translate']

但这并没有帮助,infobar没有出现.在命令行中,有两个命令： – disable-translate和–enable-translate.这是因为必须删除命令–disable-default-apps

解决方法

你应该自己开始浏览,然后告诉selenium,你已经通过传递特殊的频道ID启动了它.像这样的东西：

from random import randrange
channel_id = "%032x" % randrange(16**32)

from subprocess import Popen
# HERE YOU PASS ONLY THOSE ParaMETERS YOU WANT (i.e. without --disable-*)
# BUT YOU MAY NEED --dom-automation FOR SOME ROUTInes
chrome = Popen(" ".join([
    PATH_TO_CHROME_EXE,"--no-first-run","--dom-automation",("--testing-channel=\"NamedTestingInterface:%s\"" % channel_id),]))

try:
    from selenium.webdriver.chrome.service import Service
    chromedriver_server = Service(PATH_TO_CHROMEDRIVER,0)
    chromedriver_server.start()
    from selenium.webdriver import Remote
    driver = Remote(chromedriver_server.service_url,{"chrome.channel": channel_id,"chrome.NowebsiteTestingDefaults": True})

    driver.get(MY_WEBPAGE)
    # DO YOUR WORK

finally:
    chromedriver_server.stop()
    driver.quit()

chrome.kill()
chrome.wait()