selenium_phantomJS.py

from selenium import webdriver #Importing the web driver from selenium library
browser = webdriver.PhantomJS(executable_path=r'C:\Python27\phantomjs-2.1.1-windows\bin\phantomjs.exe') #Setting our virtual browser with PhantomJS. 
#Note: If file path of phantomjs path is not set then we need to pass its executable_path as argument. In windows phantomjs.exe and phantomjs otherwise. 
browser.set_window_size(1120, 550) #Resize the browser to desired size. Try out this code by removing this line and see the screenshot. 
browser.get("http://testing-ground.scraping.pro/login") #Getting the response from http://testing-ground.scraping.pro/login. 
#Go to this URL and see expectations also explore the dom structure of the page.
browser.find_element_by_id('usr').send_keys("admin") #Finding input box of username by its id and sending 'admin' as a user name.
browser.find_element_by_id('pwd').send_keys("12345") #Finding input box of the password by its id and sending '12345' as a password.
browser.find_element_by_xpath("//*[@id='case_login']/form/input[3]").click() #Click the login button by finding it using its xpath.
browser.save_screenshot('credential_check.png') #Taking a screenshot of the browser and saving it as 'credential_check.png' file.
browser.quit() #And quit the browser at the end.