Selenium webdriver 意外退出后无法重新启动答案

【问题标题】：Selenium webdriver unable to restart after unexpected exitSelenium webdriver 意外退出后无法重新启动
【发布时间】：2016-09-06 15:55:58
【问题描述】：

几天前我最后一次使用后，我无法启动 python 的 selenium webdriver 实例。根据报错信息，上次使用时意外退出，现在重启macbook，卸载重装chromedriver/selenium：

brew rmtree chromedriver && brew install chromedriver
pip uninstall selenium && pip install selenium

我还在同一个地方。它似乎是 selenium 本身，因为对于 Firefox 和 Chrome，我都会收到错误消息。

我试图在 python3.5 内核上运行的是：

from selenium import webdriver
driver = webdriver.Chrome()

堆栈跟踪：

File "/Users/myuser/webscraping/env/lib/python3.5/site-packages/selenium/webdriver/chrome/webdriver.py", 
line 62, in __init__self.service.start()
File "/Users/myuser/webscraping/env/lib/python3.5/site-packages/selenium/webdriver/common/service.py", 
line 86, in start self.assert_process_still_running()
File "/Users/myuser/webscraping/env/lib/python3.5/site-packages/selenium/webdriver/common/service.py", 
line 99, in assert_process_still_running % (self.path, return_code)
selenium.common.exceptions.WebDriverException: Message: Service chromedriver unexpectedly exited. Status code was: -5

同样，对于 Firefox：

from selenium import webdriver
driver = webdriver.Firefox()

和：

File "/Users/myuser/webscraping/env/lib/python3.5/site-packages/selenium/webdriver/firefox/webdriver.py", 
line 80, in __init__
self.binary, timeout)
File "/Users/myuser/webscraping/env/lib/python3.5/site-packagesyuser/selenium/webdriver/firefox/extension_connection.py", 
line 52, in __init__
self.binary.launch_browser(self.profile, timeout=timeout)
File "/Users/myuser/webscraping/env/lib/python3.5/site-packages/selenium/webdriver/firefox/firefox_binary.py", 
line 68, in launch_browser
self._wait_until_connectable(timeout=timeout)
File "/Users/myuser/webscraping/env/lib/python3.5/site-packages/selenium/webdriver/firefox/firefox_binary.py", 
line 99, in _wait_until_connectable
"The browser appears to have exited "
selenium.common.exceptions.WebDriverException: Message: The browser appears to have exited before we could connect. 
If you specified a log_file in the FirefoxBinary constructor, check it for details.

我应该寻找一些流氓进程来杀死ps -e和kill -sigint吗？

【问题讨论】：

您是否尝试过使用早期版本的 Firefox。一旦我遇到同样的问题，并通过安装早期版本来解决它。

标签： python selenium selenium-webdriver selenium-chromedriver

【解决方案1】：

我发现自制的 chromedriver 引发了与符号链接正确 dylib 相关的错误。我按照this 答案中的步骤解决了这个问题，让 chromedriver 再次运行，这使 selenium/chrome webdriver 也能正常工作。

【讨论】：