首先我认为webdriver无法找到xpath，但即使包含隐式等待也是如此 . 它仍然抛出我的错误
def login(self):
driver = self.driver
driver.get("https://www.instagram.com/")
driver.implicitly_wait(10)
login_button = driver.find_element_by_xpath("//a[@href='/accounts/login/']")
login_button.click()
time.sleep(6)
user_name_elem = driver.find_element_by_xpath("//input[@name='username']")
user_name_elem.clear()
user_name_elem.send_keys(self.username)
passworword_elem = driver.find_element_by_xpath("//input[@name='password']")
passworword_elem.clear()
passworword_elem.send_keys(self.password)
passworword_elem.send_keys(Keys.RETURN)
time.sleep(6)
文件“crawl_profile.py”，第35行，登录user_name_elem = driver.find_element_by_xpath（“// input [@ name ='username']”）文件“/usr/local/lib/python2.7/site-packages/ selenium / webdriver / remote / webdriver.py“，第293行，在find_element_by_xpath中返回self.find_element（by = By.XPATH，value = xpath）文件”/usr/local/lib/python2.7/site-packages/selenium/ webdriver / remote / webdriver.py“，第752行，在find_element'value'：value}）['value']文件”/usr/local/lib/python2.7/site-packages/selenium/webdriver/remote/webdriver .py“，第236行，执行self.error_handler.check_response（响应）文件”/usr/local/lib/python2.7/site-packages/selenium/webdriver/remote/errorhandler.py“，第192行，在check_response中提升exception_class（消息，屏幕，堆栈跟踪）selenium.common.exceptions.WebDriverException：消息：未知错误：缺少或无效'entry.level'（会话信息：chrome = 67.0.3396.99）（驱动程序信息：chromedriver = 2.27.440174（ e97a722caafc2d3a8b807ee115bfb307f7d2cfd9），platform = Mac OS X 10.13.6 x86 _64）
1 回答
您需要将chromedriver.exe更新到最新版本 .
现在您正在使用旧的chromedriver版本 (Session info: chrome=67.0.3396.99) (Driver info: chromedriver=2.27.440174)
您需要使用： (ChromeDriver 2.39) (Supports Chrome v66-68)
请查看此链接： - chroemdriver latest version updates