我一直在为我的测试用例使用 webdriver.Firefox()，但想在 IE 上进行测试。我下载了 IEDriverServer，将其添加到我的 PATH 并成功运行了 IE 测试用例。但是，当我尝试切换回 Firefox 并运行相同的测试用例时，Firefox 浏览器打开了，但没有任何反应，然后我收到此错误：
C:\Python33\lib\site-packages\selenium\webdriver\firefox\firefox_binary.py:85:
ResourceWarning: unclosed <socket.socket object, fd=280, family=2, type=1, proto=0>
while not utils.is_connectable(self.profile.port):
C:\Python33\lib\site-packages\selenium\webdriver\firefox\firefox_binary.py:85:
ResourceWarning: unclosed <socket.socket object, fd=532, family=2, type=1, proto=0>
while not utils.is_connectable(self.profile.port):
E
======================================================================
ERROR: test_ytest (__main__.Ytest)
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Traceback (most recent call last):
File "C:\Users\K\workspace\PythonTesting\src\RecipeTest.py", line 11, in setUp
self.driver = webdriver.Firefox()
File "C:\Python33\lib\site-packages\selenium\webdriver\firefox\webdriver.py", line 61, in __init__
self.binary, timeout),
File "C:\Python33\lib\site-packages\selenium\webdriver\firefox\extension_connection.py", line 47, in __init__
self.binary.launch_browser(self.profile)
File "C:\Python33\lib\site-packages\selenium\webdriver\firefox\firefox_binary.py", line 51, in launch_browser
self._wait_until_connectable()
File "C:\Python33\lib\site-packages\selenium\webdriver\firefox\firefox_binary.py", line 95, in _wait_until_connectable
self.profile.path, self._get_firefox_output()))
selenium.common.exceptions.WebDriverException: Message: "Can't load the profile. Profile Dir: c:\\users\\k\\appdata\\local\\temp\\tmp0vf9hl Firefox output: b'*** LOG addons.xpi: startup\\r\\n*** LOG addons.xpi: Skipping unavailable install location app-system-local\\r\\n*** LOG addons.xpi: Skipping unavailable install location app-system-share\\r\\n*** WARN addons.xpi: Ignoring missing add-on in C:\\\\Program Files (x86)\\\\Wajam\\\\Firefox\\\\{5a95a9e0-59dd-4314-bd84-4d18ca83a0e2}.xpi\\r\\n*** LOG addons.xpi: checkForChanges\\r\\n*** LOG addons.xpi: No changes found\\r\\n'"
----------------------------------------------------------------------
Ran 1 test in 35.208s
FAILED (errors=1)
我已经删除了 IEDriverSetup 的 PATH，甚至删除了它。我重新启动了 Eclipse（我正在使用它来运行我的 Python/WebDriver 测试）并重新启动 IE 和 Firefox 无济于事。
任何帮助表示赞赏。
编辑
我正在使用 Python 3.3 来开发我的测试用例，如果这有所作为的话。