selenium Introduction
Initially selenium is an automated testing tool, and reptiles use it mainly to solve the problem requests can not be directly executed JavaScript code
selenium is essentially driven by the browser, fully simulate the operation of the browser, such as jumps, input, click the drop-down, etc., to get the results after page rendering to support multiple browsers
installation
pip3 install selenium
Ready to work
1, download the Chrome browser
2, then install ChromeDriver. Because only install ChromeDriver, to drive its Chrome browser, complete the appropriate action. Here we introduce how to install under ChromeDriver.
View version
Click the Chrome menu "Help" → "About Google Chrome", you can see the version number of Chrome
Google browser version corresponding to the drive to keep Google
Download Google Chrome drive: http://npm.taobao.org/mirrors/chromedriver/
3, environment variable configuration
After the download is complete, the configuration ChromeDriver executable file to the environment variable.
Under Windows, the proposal directly drag chromedriver.exe file of Python Scripts directory
Or in the code at the specified actuated position (relative path / absolute path)
browser = webdriver.Chrome(executable_path='./chromedriver')