如何在python中使用selenium的示例_Python

如何在python中使用selenium的示例

2020-12-28 00:49虞大胆 Python

这篇文章主要介绍了如何在python中使用selenium的示例，selenium提供了一个通用的接口,可模拟用户来操作浏览器，小编觉得挺不错的，现在分享给大家，也给大家做个参考。一起跟随小编过来看看吧

最近基于selenium写了一个python小工具,记录下学习记录,自己运行的环境是Ubuntu 14.04.4, Python 2.7,Chromium 49.0,ChromeDriver 2.16

selenium简介

selenium提供了一个通用的接口,可模拟用户来操作浏览器,比如用于自动化测试等.

selenium的核心是WebDriver,它提供了一组接口,这些接口能够操作各种跨平台的浏览器.各大浏览器厂商.

各大浏览器厂商也支持Selenium,将其作为浏览器的一部分.

selenium工具集提供了WebDriver,Selenium IDE,Selenium-Grid等

Selenium 1.0 + WebDriver = Selenium 2.0

Selenium WebDriver是Selenium Remote Control(Selenium-RC)的继承者.

WebDriver提供了更简单和简洁的接口,克服了Selenium-RC API一些限制.
相比Selenium 1.0,WebDriver是面向对象式的服务.
WebDriver驱动浏览器更有效率,提供了比Selenium 1.0更多的功能
Selenium RC只能在单机上运行,WebDriver则提供了远程操作的功能

selenium基本使用

selenium运行需要什么

主要包括三部分:selenium selenium,浏览器driver,浏览器selenium selenium是一组通用的接口,而不同的浏览器提供其自身的driver(大部分是官方的),浏览器则被模拟控制操作的终端.

安装

									pip install selenium --upgrade

									apt-get install chromium-browser

									wget http://chromedriver.storage.googleapis.com/2.10/chromedriver_linux`getconf LONG_BIT`.zip

									unzip chromedriver_linux32.zip

									cp chromedriver /usr/local/share

									chmod +x /usr/local/share/chromedriver

									ln -s /usr/local/share/chromedriver /usr/local/bin/chromedriver 

									ln -s /usr/bin/chromedriver /usr/local/share/chromedriver

简单的使用

									from selenium import webdriver

									driver = webdriver.Chrome('/usr/local/bin/chromedriver')

									driver.get('http://mail.sina.net');

									print(driver.title)

API使用

可参考/usr/local/lib/python2.7/dist-packages/selenium

Chrome WebDriver

复制代码代码如下:

	

	selenium.webdriver.chrome.webdriver.WebDriver(executable_path='chromedriver', port=0, chrome_options=None, service_args=None, desired_capabilities=None, service_log_path=None)

ChromeOptions

可以通过ChromeDriver session配置ChromeDriver session ChromeDriverconvenient methods for setting ChromeDriver-specific capabilities

									from selenium.webdriver.chrome.options import Options

									chrome_options = Options()

									chrome_options.add_argument("--disable-extensions")

									chrome_options.add_argument('--disable-logging')

									chrome_options.add_experimental_option('prefs', {'download.default_directory':

									'/tmp'})

									chrome_options.binary_location='/usr/bin/chromium-browser'

									driver = webdriver.Chrome(chrome_options=chrome_options)

直接使用DesiredCapabilities

ChromeOptions是构建在DesiredCapabilities之上的,为了使用DesiredCapabilities,必须知道capability的Key/value对.

									chrome_options = Options()

									capabilities={}

									capabilities['platform'] = "WINDOWS"

									capabilities['version'] = "10"

									capabilities.update(chrome_options.to_capabilities())

									driver = webdriver.Chrome(desired_capabilities=capabilities)

chromedriver运行方式

The ChromeDriver class不断的创建实例,会浪费很多的时间,可以通过两个方式解决.

使用ChromeDriverService

									import selenium.webdriver.chrome.service as service

									service = service.Service('/usr/bin/chromedrive')

									service.start()

									capabilities = { }

									driver = webdriver.Remote(service.service_url, capabilities)

									driver.get('http://mail.sina.net');

									print(driver.title)

开启单独的ChromeDriver服务

									./chromedriver

									driver = webdriver.Remote('http://127.0.0.1:9515', DesiredCapabilities.CHROME)

									driver.get('http://mail.sina.net');

RemoteWebDriverServer

The RemoteWebDriver is composed of two pieces: a client and a server. The client is your WebDriver test and the server is simply a Java servlet, which can be hosted in any modern JEE app server. The server will always run on the machine with the browser you want to test.

									wget http://selenium-release.storage.googleapis.com/2.53/selenium-server-standalone-2.53.0.jar

									java -jar selenium-server-standalone-2.53.0.jar

									from selenium import webdriver

									from selenium.webdriver.common.desired_capabilities import DesiredCapabilities

									driver = webdriver.Remote( command_executor='http://127.0.0.1:4444/wd/hub',des

									desired_capabilities=DesiredCapabilities.CHROME)

									driver.get('http://mail.sina.net');