我是selenium和python的新手 . 我已经安装了python 3.4.1和selenium webdriver . 使用selenium ide创建脚本并导出到python webdriver . Firefox版本 - 31.0系统配置：窗口 - 32位

脚本：从selenium导入webdriver从selenium.webdriver.common.by导入来自selenium.webdriver.common.keys从selenium.webdriver.support.ui导入导入从selenium.common.exceptions导入选择导入NoSuchElementException导入unittest，time，re

class Test(unittest.TestCase):
def setUp(self):
    self.driver = webdriver.Firefox()
    self.driver.implicitly_wait(30)
    self.base_url = "https://www.gmail.com/"
    self.verificationErrors = []
    self.accept_next_alert = True

def test_(self):
    driver = self.driver
    driver.get(self.base_url)
    driver.find_element_by_id("Email").clear()
    driver.find_element_by_id("Email").send_keys("shivart")
    driver.find_element_by_id("Passwd").clear()
    driver.find_element_by_id("Passwd").send_keys("test12")
    driver.find_element_by_id("signIn").click()
    driver.find_element_by_css_selector("span.gb_2").click()
    driver.find_element_by_id("gb_71").click()

def is_element_present(self, how, what):
    try: self.driver.find_element(by=how, value=what)
    except NoSuchElementException as e: return False
    return True

def is_alert_present(self):
    try: self.driver.switch_to_alert()
    except NoAlertPresentException as e: return False
    return True

def close_alert_and_get_its_text(self):
    try:
        alert = self.driver.switch_to_alert()
        alert_text = alert.text
        if self.accept_next_alert:
            alert.accept()
        else:
            alert.dismiss()
        return alert_text
    finally: self.accept_next_alert = True

#def tearDown(self):
#    self.driver.quit()
 #   self.assertEqual([], self.verificationErrors)

if __name__ == "__main__":
unittest.main()

运行脚本时我得到以下错误 .

回溯（最近一次调用最后一次）：文件“C：\ test.py”，第20行，在test_ driver.find_element_by_id（“Email”）中.send_keys（“shivart.rt”）文件“C：\ Python34 \ lib \ site -packages \ selenium \ webdriver \ remote \ webelement.py“，第293行，在send_keys self._execute中（Command.SEND_KEYS_TO_ELEMENT，{'value'：输入}）

File "C:\Python34\lib\site-packages\selenium\webdriver\remote\webelement.py",
  line 370, in _execute
return self._parent.execute(command, params)

文件“C：\ Python34 \ lib \ site-packages \ selenium \ webdriver \ remote \ webdriver.py”，l ine 173，执行self.error_handler.check_response（响应）

File "C:\Python34\lib\site-packages\selenium\webdriver\remote\errorhandler.py"
, line 164, in check_response
 raise exception_class(message, screen, stacktrace)

selenium.common.exceptions.WebDriverException：消息：'组件返回失败代码：0x80004003（NS_ERROR_INVALID_POINTER）[nsINativeKeyboard.sendKeys]'

python selenium selenium-webdriver