Selenium WebDriver-通过页面标题切换窗口

selenium webdriver可以通过获取页面标题，再跟据标题去切换浏览器窗口，代码如下：

#encoding=utf-8
import unittest
import time
import chardet
from selenium import webdriver

class VisitSogouByIE(unittest.TestCase):

    def setUp(self):
        # 启动chrome浏览器
        self.driver = webdriver.Chrome(executable_path = "e:\\chromedriver")

    def test_operateWindowHandle(self):
        url = "http://www.baidu.com"
        self.driver.get(url)
        # 获取当前窗口句柄
        now_handle = self.driver.current_window_handle
        # 打印当前获取的窗口句柄
        print now_handle
        # 百度搜索输入框中输入“selenium”
        self.driver.find_element_by_id("kw").send_keys("w3cschool")
        # 点击搜索按钮
        self.driver.find_element_by_id("su").click()
        # 导入time包
        import time
        # 等待3秒，以便网页加载完成
        time.sleep(3)
        # 点击w3school在线教育链接
        self.driver.find_element_by_xpath('//div[@id="1"]//a[text()="w3"]').click()
        time.sleep(5)
        # 获取所有窗口句柄
        all_handles = self.driver.window_handles
        # 循环遍历所有新打开的窗口句柄，也就是说不包括主窗口
        for handle in all_handles:
            self.driver.switch_to.window(handle)
            print type(self.driver.title)
            print self.driver.title
            if self.driver.title == u"w3school 在线教程":
                # 点击HTML5链接
                self.driver.find_element_by_link_text('HTML5').click()
                time.sleep(3)
            if self.driver.title == u"w3cschool_百度搜索":
               time.sleep(2)
               self.driver.find_element_by_id("kw").clear()
               self.driver.find_element_by_id("kw").send_keys(u"光荣之路自动化测试培训")
               self.driver.find_element_by_id("su").click()
               time.sleep(5) 

    def tearDown(self):
        # 退出IE浏览器
        self.driver.quit()

if __name__ == '__main__':
    unittest.main()