Python Learning notes Selenium customizing options for launching Chrome

Study Address: http://blog.csdn.net/vinson0526/article/details/51850929

seleniumwhen using, we may need to chrome do some special settings to complete the browser behavior we expect, such as 阻止图片加载 , and 阻止JavaScript执行 other actions. These need selenium ChromeOptions to help us complete

What is Chromeoptions

chromeoptionsis a convenient chrome class for controlling the properties at startup. Through selenium the source code, you can see, chromeoptions mainly provides the following features:

• Set the chrome binary file location (binary_location)
• Add startup parameters (Add_argument)
• Add extension App (Add_extension, Add_encoded_extension)
• Add an experimental setting parameter (add_experimental_option)
• Set Debugger address (debugger_address)

customizing startup options

What we use most is three features.

• Add Chrome boot Parameters
• Modify Chrome Settings
• Add an extension app

The following python example one by one shows that other languages can refer to the selenium source code

Add Chrome boot Parameters

# 启动时设置默认语言为中文 UTF-8from selenium import webdriveroptions = webdriver.ChromeOptions()options.add_argument(‘lang=zh_CN.UTF-8‘)driver = webdriver.Chrome(chrome_options = options)

The most common scenario is set up user-agent to simulate mobile devices, such as analogiphone6

options.add_argument(‘user-agent="Mozilla/5.0 (iPhone; CPU iPhone OS 9_1 like Mac OS X) AppleWebKit/601.1.46 (KHTML, like Gecko) Version/9.0 Mobile/13B143 Safari/601.1"‘)

Modify Chrome Settings

# 禁止图片加载from selenium import webdriveroptions = webdriver.ChromeOptions()prefs = {    ‘profile.default_content_setting_values‘ : {        ‘images‘ : 2 }}options.add_experimental_option(‘prefs‘,prefs)driver = webdriver.Chrome(chrome_options = options)

For more experimental parameters, please refer to Chromedriver website.

Add extension

from selenium import webdriveroptions = webdriver.ChromeOptions()extension_path = ‘/extension/path‘options.add_extension(extension_path)driver = webdriver.Chrome(chrome_options = options)

Bonus Add Agent Method

from Selenium import webdriverproxy =  "Proxy_host:proxy:port" Options = Webdriver. Chromeoptions () desired_capabilities = Options.to_capabilities () desired_capabilities[ Proxy '] = { "Httpproxy":P Roxy,  "Ftpproxy":P Roxy, " Sslproxy ":P Roxy, " Noproxy ": none, " Proxytype ": " MANUAL ", " class ":  "Org.openqa.selenium.Proxy",  "AutoDetect": false}driver = Webdriver. Chrome (desired_capabilities = desired_capabilities)         

Python Learning Notes Selenium customizing options for launching Chrome