Floating menu operation

from selenium.webdriver.common.action_chains import ActionChains

item=driver.find_element_by_name("tj_settingicon")
ActionChains(driver).move_to_element(item).perform()
driver.find_element_by_link_text(" Advanced search ").click()

Window switch ：

old_handle = driver.current_window_handle
driver.switch_to.window(driver.window_handles[1])
driver.find_element_by_name("word").send_keys("bobo")
driver.switch_to.window(old_handle)