使用selenium webdriver切换回父选项卡

Question

我写了示例代码，但它不起作用。还观察到2个选项卡只有1个窗口句柄。如何再次切换到父页签？

 driver = webdriver.Firefox()
 driver.set_page_load_timeout(60)
 driver.implicitly_wait(15)
 driver.get("https://www.google.co.in")
 oldtab = driver.current_window_handle
 print oldtab
 print driver.title
 body = driver.find_element_by_tag_name("body")
 print 'new tab opened'
 driver.get("http://gmail.com/")
 print driver.title
 print 'back to old tab'
 driver.switch_to_window(oldtab)
 print driver.title
 for handle in driver.window_handles:
    print "Handle = ",handle

Answer 1

在将句柄切换到父选项卡之前，需要使用键切换选项卡。

 from selenium.webdriver.common.keys import Keys

 driver = webdriver.Firefox()
 driver.set_page_load_timeout(60)
 driver.implicitly_wait(15)

 # First Tab
 driver.get("https://www.google.co.in")
 oldtab = driver.current_window_handle
 print driver.title
 time.sleep(3)

 # Second Tab
 driver.find_element_by_tag_name("body").send_keys(Keys.CONTROL + "t")
 driver.get("http://gmail.com/")
 newtab = driver.current_window_handle
 print driver.title
 time.sleep(3)

 # Go back to First Tab
 driver.find_element_by_tag_name("body").send_keys(Keys.ALT + Keys.NUMPAD1)
 driver.switch_to_window(oldtab)
 print driver.title
 time.sleep(3)

 # Go to Second Tab again
 driver.find_element_by_tag_name("body").send_keys(Keys.ALT + Keys.NUMPAD2)
 driver.switch_to_window(newtab)
 print driver.title
 time.sleep(3)