title: Can not import Marionette
body: <p>When I try to import Marionette driver in Python, I get this response:</p>
  
  <pre><code>Python 2.7.15rc1 (default, Apr 15 2018, 21:51:34) 
  [GCC 7.3.0] on linux2
  Type "help", "copyright", "credits" or "license" for more information.
  &gt;&gt;&gt; 
  &gt;&gt;&gt; from marionette import Marionette
  Traceback (most recent call last):
    File "&lt;stdin&gt;", line 1, in &lt;module&gt;
    File "/usr/local/lib/python2.7/dist-packages/marionette_client-2.0.0-py2.7.egg/marionette/__init__.py", line 7, in &lt;module&gt;
      from .marionette_test import (
    File "/usr/local/lib/python2.7/dist-packages/marionette_client-2.0.0-py2.7.egg/marionette/marionette_test.py", line 18, in &lt;module&gt;
      from marionette_driver.errors import (
    File "/usr/local/lib/python2.7/dist-packages/marionette_driver-1.1.1-py2.7.egg/marionette_driver/__init__.py", line 7, in &lt;module&gt;
      from marionette_driver import (
    File "/usr/local/lib/python2.7/dist-packages/marionette_driver-1.1.1-py2.7.egg/marionette_driver/expected.py", line 8, in &lt;module&gt;
      from marionette import HTMLElement
    File "/usr/local/lib/python2.7/dist-packages/marionette_driver-1.1.1-py2.7.egg/marionette_driver/marionette.py", line 20, in &lt;module&gt;
      from mozrunner import B2GEmulatorRunner
  ImportError: cannot import name B2GEmulatorRunner
  &gt;&gt;&gt; 
  </code></pre>
  
  <p>I have the Mozrunner package installed, but it does not have any B2GEmulatorRunner. Any suggestion as to what is causing this issue and how I can resolve this?</p>
  
  <hr>
  
  <p>Edit:</p>
  
  <p>After updating my entire Python 2.7 library with PIP, now I am stuck with this issue:</p>
  
  <pre><code>&gt;&gt;&gt; import marionette
  Traceback (most recent call last):
    File "&lt;stdin&gt;", line 1, in &lt;module&gt;
    File "/usr/local/lib/python2.7/dist-packages/marionette/__init__.py", line 7, in &lt;module&gt;
      from .marionette_test import (
  ImportError: No module named marionette_test
  </code></pre>