python - 断管错误 selenium webdriver，当命令之间存在间隙时？

Question

Ubuntu 18.x + selenium webdriver(Firefox)

面对一个奇怪的问题，如果我一起运行，下面的 block 就可以工作了

from selenium import webdriver
url = 'https://indiamart.com'
driver = webdriver.Firefox()
driver.get(url)
driver.find_element_by_xpath(xpath).click()

我尝试过的每个 url 都会出现这种情况。

但是如果我一次执行一行，它会给出

Traceback (most recent call last):
  File "<input>", line 1, in <module>
  File "/media/lib/python3.6/site-packages/selenium/webdriver/remote/webdriver.py", line 326, in get
    self.execute(Command.GET, {'url': url})
  File "/media/lib/python3.6/site-packages/selenium/webdriver/remote/webdriver.py", line 312, in execute
    response = self.command_executor.execute(driver_command, params)
  File "/media/lib/python3.6/site-packages/selenium/webdriver/remote/remote_connection.py", line 472, in execute
    return self._request(command_info[0], url, body=data)
  File "/media/lib/python3.6/site-packages/selenium/webdriver/remote/remote_connection.py", line 495, in _request
    self._conn.request(method, parsed_url.path, body, headers)
  File "/usr/lib/python3.6/http/client.py", line 1239, in request
    self._send_request(method, url, body, headers, encode_chunked)
  File "/usr/lib/python3.6/http/client.py", line 1285, in _send_request
    self.endheaders(body, encode_chunked=encode_chunked)
  File "/usr/lib/python3.6/http/client.py", line 1234, in endheaders
    self._send_output(message_body, encode_chunked=encode_chunked)
  File "/usr/lib/python3.6/http/client.py", line 1065, in _send_output
    self.send(chunk)
  File "/usr/lib/python3.6/http/client.py", line 986, in send
    self.sock.sendall(data)
BrokenPipeError: [Errno 32] Broken pipe

这是代码上的错误

driver.get(url)

但是，如果我在 Broken Pipe error 之后再次执行同一行，它会工作并获取 url。

我很困惑。谁能帮帮我。

谢谢

Answer 1

这是geckodriver 最新版本v0.21.0 与最新版本selenium v​​3.11 匹配的已知错误

要解决此错误，请执行以下操作: 一)downgrade geckodriver到 v0.20.1 或更早版本 b) 等待在即将推出的 selenium 和/或 geckodriver 版本中推出错误修复/缓解措施

此错误源于 Keep-Alive 功能 v 0.21 中新增的支持。但是，geckodriver 在 0.21 中的默认超时设置为 5s，非常短。

此错误已跟踪 here对于 geckodriver 和 here Selenium 。