title: AttributeError: 'module' object has no attribute 'Firefox'
body: <p>I am trying to use selenium webdriver to spawn an instance of Firefox. In the past, I was able to do this after installing geckodriver and making sure that it was in my PATH. However, I switched over to using phantomjs for about a year and only recently decided to give Firefox a spin again. Unfortunately, now when I try to instantiate the webdriver.Firefox object, I get an AttributeError saying the object as no such attribute called "Firefox". I am not sure what changed to cause this error.</p>
  
  <p>Below is a shell session to show the environment I am working with and the nature of the error:</p>
  
  <pre><code>~$ which python
  /cygdrive/c/Python27/python
  ~$ which geckodriver
  /cygdrive/c/Windows/geckodriver
  ~$ python -i
  Python 2.7.12 (v2.7.12:d33e0cf91556, Jun 27 2016, 15:24:40) [MSC v.1500 64 bit (AMD64)] on win32
  Type "help", "copyright", "credits" or "license" for more information.
  &gt;&gt;&gt; from selenium import webdriver
  &gt;&gt;&gt; browser = webdriver.Firefox()
  Traceback (most recent call last):
    File "&lt;stdin&gt;", line 1, in &lt;module&gt;
  AttributeError: 'module' object has no attribute 'Firefox'
  &gt;&gt;&gt; dir(webdriver)
  ['ActionChains', 'DesiredCapabilities', 'PhantomJS', 'Proxy', 'TouchActions', '__builtins__', '__doc__', '__file__', '__name__', '__package__', '__path__', '__version__', 'common', 'phantomjs', 'remote']
  &gt;&gt;&gt; print(webdriver.__file__)
  C:\Python27\lib\site-packages\selenium\webdriver\__init__.pyc
  </code></pre>
  
  <p>Note: The exact same thing happens when I try to run it from the native windows cmd.exe and from IDLE, so this issue does not appear to be specific to Cygwin</p>
  
  <p>This worked in the past, and I even double checked the selenium dir in the site-packages dir in my python installation to confirm that all the necessary files are there. The firefox files are indeed there, so I have no idea why they're not being recognized</p>