selenium操作元素时候报 Element is no longer valid

测试积点老人

selenium能够定位到元素，但是操作元素时候报 Element is no longer valid

from selenium import webdriver
import time
browser = webdriver.Ie()
browser.maximize_window()
browser.get('URL')

elem = browser.find_element_by_css_selector("#username")

elem.click()___

网上给的方法已经都试过了，什么等待，refresh页面等等，都不可以，有没有大神帮忙解决一下呢，错误信息如下

1. elem.click()
   
2. File "C:\Python27\lib\site-packages\selenium-2.52.0-py2.7.egg\selenium\webdriver\remote\webelement.py", line 75, in click
   
3. self._execute(Command.CLICK_ELEMENT)
   
4. File "C:\Python27\lib\site-packages\selenium-2.52.0-py2.7.egg\selenium\webdriver\remote\webelement.py", line 469, in _execute
   
5. return self._parent.execute(command, params)
   
6. File "C:\Python27\lib\site-packages\selenium-2.52.0-py2.7.egg\selenium\webdriver\remote\webdriver.py", line 201, in execute
   
7. self.error_handler.check_response(response)
   
8. File "C:\Python27\lib\site-packages\selenium-2.52.0-py2.7.egg\selenium\webdriver\remote\errorhandler.py", line 194, in check_response
   
9. raise exception_class(message, screen, stacktrace)
   
10. selenium.common.exceptions.StaleElementReferenceException: Message: Element is no longer valid

复制代码

qqq911

加点等待时间

海海豚

在两次点击中间加一定的等待时间

jingzizx

是不是还没出现元素

abcsell

多加一些思考时间

hekunlong

css_selector("#username") 这个方法正确吗换其他试试