selenium定位下拉框：selenium.common.exceptions.ElementNotInteractableException: Message: element not interactable: Element is not currently

 有时候元素定位出错，显性等待可以很好解决

• presence_of_element_located： 当我们不关心元素是否可见，只关心元素是否存在在页面中。
• visibility_of_element_located： 当我们需要找到元素，并且该元素也可见。

场景：访问百度，找到右上角设置，点击下拉中的搜索设置。每页条数初始是10，修改每页条数为20

from selenium import webdriver
import time
from selenium.webdriver.support.select import Select
from selenium.webdriver.common.keys import Keys
from selenium.webdriver.common.action_chains import ActionChains
 6 from selenium.webdriver.support.wait import WebDriverWait
 7 from selenium.webdriver.support import expected_conditions as ec
 8 from selenium.webdriver.common.by import By
driver = webdriver.Chrome()
driver.maximize_window()
driver.get("http://www.baidu.com")
driver.implicitly_wait(10)
driver.find_element_by_id("kw").send_keys("selenium")
driver.find_element_by_id("su").send_keys(Keys.ENTER)
# 鼠标悬停
mouse = driver.find_element_by_name("tj_settingicon")
ActionChains(driver).move_to_element(mouse).perform()
driver.find_element_by_link_text("搜索设置").click()
# 隐式等待
driver.implicitly_wait(5)
# 定位下拉框
select = driver.find_element_by_name("NR")
# 显式等待，待元素可见
24 # WebDriverWait(driver, 10).until(ec.visibility_of_element_located((By.NAME, "NR")))
Select(select).select_by_visible_text("每页显示20条")
print("下拉框选择的最新条数是：", select.get_attribute('value'))
#等待2秒，为了看到效果
time.sleep(2)
driver.quit()

　没加第24行代码前，一直报错selenium.common.exceptions.ElementNotInteractableException

    加行代码完美解决：

# 显式等待，待元素可见
WebDriverWait(driver, 10).until(ec.visibility_of_element_located((By.NAME, "NR")