硒不与Firefox和ububtu蟒蛇webdriver的工作

Question

我试图写测试用例使用Selenium我的web应用程序，Firefox和蟒蛇webdrivers，而我的开发环境是在Ubuntu 16.04 LTS的设置，但我得到异常，

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. 

这里是我的代码块

from selenium import webdriver 
from selenium.webdriver.common.keys import Keys 

driver = webdriver.Firefox() 
driver.get("http://www.python.org") 
assert "Python" in driver.title 
driver.close() 

下面是完整的异常堆栈：

Traceback (most recent call last): 
    File "LoginLogout.py", line 4, in <module> 
    driver = webdriver.Firefox() 
    File "/usr/local/lib/python2.7/dist-packages/selenium/webdriver/firefox/webdriver.py", line 80, in __init__ 
    self.binary, timeout) 
    File "/usr/local/lib/python2.7/dist-packages/selenium/webdriver/firefox/extension_connection.py", line 52, in __init__ 
    self.binary.launch_browser(self.profile, timeout=timeout) 
    File "/usr/local/lib/python2.7/dist-packages/selenium/webdriver/firefox/firefox_binary.py", line 68, in launch_browser 
    self._wait_until_connectable(timeout=timeout) 
    File "/usr/local/lib/python2.7/dist-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. 

我有以下的环境设置

Mozilla Firefox浏览器：47.0

硒版本：2.53.6

Python版本：2.7.12

OS： Linux 4.4.0-31-generic＃50 -Ubuntu SMP x86_64

Answer 1

硒正在使用FirefoxDriver而不是Marionette。几个星期前，当我转向Firefox 47.0并在那个时候切换到这个版本时，我遇到了这个问题。

以下link更全面地讨论了这个问题。