How to avoid getting `'NoneType' object has no attribute 'path'` on selenium quit()?

Question

When running Selenium Webdriver Python script, one gets a 'NoneType' object has no attribute 'path' after executing self.driver.quit().
Enclosing self.driver.quit() in try/except does not help, namely:

$ cat demo_NoneType_attribute_error.py
# -*- coding: utf-8 -*-
from selenium import webdriver
import unittest

class TestPass(unittest.TestCase):
    def setUp(self):
        self.driver = webdriver.Firefox()

    def test_pass(self):
        pass

    def tearDown(self):
        print("doing: self.driver.quit()")
        try:
            self.driver.quit()
        except AttributeError:
            pass

if __name__ == "__main__":
    unittest.main()

$ python demo_NoneType_attribute_error.py
doing: self.driver.quit()
'NoneType' object has no attribute 'path'
.
----------------------------------------------------------------------
Ran 1 test in 19.807s

OK

$

Does anyone have an idea how to avoid the 'NoneType' object has no attribute 'path' message?

Note:
Since this issue was already reported by the beginning of November (see URLs below), it should have had a patch by now - but upgrading selenium to latest from pip did not eliminate it.

• Exception AttributeError: "'NoneType' object has no attribute 'path'" in
• Exception AttributeError: "'NoneType' object has no attribute 'path'" in

Environment: Selenium 3.0.2; Python 2.7; Cygwin 32 bits on Windows 7.

Answer 1

It seems a bug in selenium 3.0 version

Update the quit() method definition in webdriver.py of firefox as follows (relative path: ..\Python27\Lib\site-packages\selenium\webdriver\firefox\webdriver.py):

change the following line in quit() method:

shutil.rmtree(self.profile.path) #which gives Nonetype has no attribute path
if self.profile.tempfolder is not None:
    shutil.rmtree(self.profile.tempfolder)

to

if self.profile is not None:
    shutil.rmtree(self.profile.path) # if self.profile is not None, then only rmtree method is called for path.
    if self.profile.tempfolder is not None:
        shutil.rmtree(self.profile.tempfolder) # if tempfolder is not None, then only rmtree is called for tempfolder.

Note: wherever self.profile is used, do the same. i.e., move the code to if condition as mentioned above.

---

In Selenium 3.0, profile and binary moved to firefox_options instead of their separate existence as firefox_profile and firefox_binary respectively in Selenium 2.0.

you can verify this in webdriver.py (of firefox) in __init__ method.

relevant code in __init__ method:

if firefox_options is None:
    firefox_options = Options()
    print dir(firefox_options) # you can refer binary and profile as part of firefox_options object.

Note: Observed that firefox_options.profile still giving None, which might be an issue to be fixed in selenium 3.0