The Selenium Firefox driver has encountered an OSError exception specifically indicating an [Errno 8] Exec format error

def initializeDisplay(self):
   display = Xvfb()
   display.start()
   fp = webdriver.FirefoxProfile()
   fp.set_preference("browser.download.folderList",2)
   fp.set_preference("browser.download.manager.showWhenStarting",False)
   fp.set_preference("browser.helperApps.neverAsk.saveToDisk","text/csv")
       self.browser= webdriver.Firefox(firefox_profile=fp)

An error is thrown on webdriver.firefox, even after attempting to specify the geckodriver path

self.browser=webdriver.Firefox(executable_path='/usr/bin/geckodriver',firefox_profile=fp)

Despite this, the error persists

 Traceback (most recent call last):
  File "example.py", line 23, in initializeDisplay
    self.browser= webdriver.Firefox(executable_path='/usr/bin/geckodriver',firefox_profile=fp)
  File "/usr/local/lib/python2.7/dist-packages/selenium/webdriver/firefox/webdriver.py", line 157, in __init__
    self.service.start()
  File "/usr/local/lib/python2.7/dist-packages/selenium/webdriver/common/service.py", line 76, in start
    stdin=PIPE)
  File "/usr/lib/python2.7/subprocess.py", line 711, in __init__
    errread, errwrite)
  File "/usr/lib/python2.7/subprocess.py", line 1343, in _execute_child
    raise child_exception
OSError: [Errno 8] Exec format error

Answer №1

This error message...

OSError: [Errno 8] Exec format error

...indicates that the geckodriver binary you are attempting to use was built for a different system.

Solution

Download the appropriate GeckoDriver binary for your operating system (Windows, Mac, Linux) from the GeckoDriver Release Repository.

Make sure to select the correct GeckoDriver binary based on the OS it will be installed on:

  • geckodriver-v0.22.0-linux32.tar.gz
    : For Linux operating systems.
  • geckodriver-v0.22.0-macos.tar.gz: For Mac OSX.
  • geckodriver-v0.22.0-win32.zip: For Windows 32-bit operating systems.
  • geckodriver-v0.22.0-win64.zip: For Windows 64-bit operating systems.

Note: After downloading, remember to extract the GeckoDriver binary by unzipping or untarring it.

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