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POunable to call firefox from selenium in python on AWS machine
 

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  1. POunable to call firefox from selenium in python on AWS machine
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    <p>I am trying to use selenium from python to scrape some dynamics pages with javascript. However, I cannot call firefox after I followed the instruction of selenium on the pypi page(http://pypi.python.org/pypi/selenium). I installed firefox on AWS ubuntu 12.04. The error message I got is:</p> <pre><code>In [1]: from selenium import webdriver In [2]: br = webdriver.Firefox() --------------------------------------------------------------------------- WebDriverException Traceback (most recent call last) /home/ubuntu/&lt;ipython-input-2-d6a5d754ea44&gt; in &lt;module&gt;() ----&gt; 1 br = webdriver.Firefox() /usr/local/lib/python2.7/dist-packages/selenium/webdriver/firefox/webdriver.pyc in __init__(self, firefox_profile, firefox_binary, timeout) 49 RemoteWebDriver.__init__(self, 50 command_executor=ExtensionConnection("127.0.0.1", self.profile, ---&gt; 51 self.binary, timeout), 52 desired_capabilities=DesiredCapabilities.FIREFOX) 53 /usr/local/lib/python2.7/dist-packages/selenium/webdriver/firefox/extension_connection.pyc in __init__(self, host, firefox_profile, firefox_binary, timeout) 45 self.profile.add_extension() 46 ---&gt; 47 self.binary.launch_browser(self.profile) 48 _URL = "http://%s:%d/hub" % (HOST, PORT) 49 RemoteConnection.__init__( /usr/local/lib/python2.7/dist-packages/selenium/webdriver/firefox/firefox_binary.pyc in launch_browser(self, profile) 42 43 self._start_from_profile_path(self.profile.path) ---&gt; 44 self._wait_until_connectable() 45 46 def kill(self): /usr/local/lib/python2.7/dist-packages/selenium/webdriver/firefox/firefox_binary.pyc in _wait_until_connectable(self) 79 raise WebDriverException("The browser appears to have exited " 80 "before we could connect. The output was: %s" % ---&gt; 81 self._get_firefox_output()) 82 if count == 30: 83 self.kill() WebDriverException: Message: 'The browser appears to have exited before we could connect. The output was: Error: no display specified\n' </code></pre> <p>I did search on the web and found that this problem happened with other people (https://groups.google.com/forum/?fromgroups=#!topic/selenium-users/21sJrOJULZY). But I don't understand the solution, if it is. </p> <p>Can anyone help me please? Thanks!</p>
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    1. CO`Error: no display specified` means that the browser doesn't have a screen to display its main window on. You'll need to find a way to run Firefox headless: http://stackoverflow.com/questions/10060417/python-firefox-headless. This answer in particular looks useful: http://stackoverflow.com/a/6300672/464744
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    2. CO@Blender Thank you so much. The second link solved my problem. Sometimes I just cannot find the solution from google if I don't have the right keyword in my mind.
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      1. USDavid
    3. CO@Blender : how did you get an anchor in your URL to a response in a page ? I see no links like this in the pages.
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      1. USGilles Quenot
 

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