#test.py

#coding:utf-8

from selenium import webdriver

driver=webdriver.Chrome()

driver.get("http://www.baidu.com")

#参数数字为像素点

print("设置浏览器宽480、高800显示")

driver.set_window_size(400,800)

driver.quit()

#coding:utf-8

from selenium import webdriver

driver=webdriver.Chrome()

#访问百度首页

first_url='http://www.baidu.com'

print("now access %s" %(first_url))

driver.get(first_url)

#访问新闻页面

second_url='http://news.baidu.com'

print("now access %s" %(second_url))

driver.get(second_url)

#返回（后退）到百度首页

print ("back to %s"%(first_url))

driver.back()

#前进到新闻页

print ("back to %s"%(second_url))

driver.forward()

driver.quit()