2-selenium operate on the browser - based Shanghai yo

from the Selenium Import webdriver
 Import Time 

'' ' 
in this chapter show talking about how to call webdriver frame with Python API, browser do some routine operations such as open, forward, back, refresh, set the window size, screen shots, exit and other operations. 
'' ' 
Driver = webdriver.Chrome () 
URL = ' http://www.baidu.com ' 
URL1 = ' http://www.google.com ' 
driver.get (URL) 
the time.sleep ( . 3 ) 
Driver. GET (URL1) 
the time.sleep ( . 5 ) 

driver.back ()   # returns the previous step, 
the time.sleep (. 3 ) 

driver.forward ()   # returns the next 
time.sleep (1) 

Driver.set_window_size ( 400, 900)   # set the browser size 
time.sleep (1 ) 

driver.maximize_window ()   # maximize browser 
time.sleep (1 ) 

driver.refresh ()   # refresh your browser 
time.sleep (1 ) 

driver.get_screenshot_as_file ( ' D: \ Google Download \ screenshot1.jpg ' )   # Screenshot saved as a JPG 
the time.sleep (1 ) 

driver.close ()    # close the current window 
driver.quit ()    # close the browser