求问 python+selenium 这样的脚本为什么加上最后一句就报错，不加最后一句就正常呢？

from selenium import webdriver



driver = webdriver.Firefox()

driver.get("http://www.baidu.com";)

element = driver.find_element_by_id("kw")

element.send_keys("123")



报错内容：

Traceback (most recent call last):

  File "E:/自动化测试/test/baidutest.py", line 6, in <module>

    element.send_keys("123")

  File "C:\Users\sunl\AppData\Local\Programs\Python\Python36\lib\site-packages\selenium\webdriver\remote\webelement.py", line 349, in send_keys

    'value': keys_to_typing(value)})

  File "C:\Users\sunl\AppData\Local\Programs\Python\Python36\lib\site-packages\selenium\webdriver\remote\webelement.py", line 493, in _execute

    return self._parent.execute(command, params)

  File "C:\Users\sunl\AppData\Local\Programs\Python\Python36\lib\site-packages\selenium\webdriver\remote\webdriver.py", line 249, in execute

    self.error_handler.check_response(response)

  File "C:\Users\sunl\AppData\Local\Programs\Python\Python36\lib\site-packages\selenium\webdriver\remote\errorhandler.py", line 193, in check_response

    raise exception_class(message, screen, stacktrace)

selenium.common.exceptions.WebDriverException: Message: Expected [object Undefined] undefined to be a string





感觉之前运行都正常啊。今天忽然就不行了。

修改



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