1、明明有文件，打印出來的卻是空白，因為在js里，數(shù)據(jù)是動態(tài)的。

2、切換到標簽里就可以了

            n = driver.window_handles
            driver.switch_to.window (n[1])
            print(driver.current_url)
            # element = driver.find_element_by_id("b")
            # driver.switch_to_default_content() 
            frame = driver.find_element_by_css_selector("iframe")  
            driver.switch_to_frame(frame) 
            print(driver.page_source)
            links = driver.find_element_by_id("go")
            links.click()

3、打印出來的效果