title: Name conversion is not defined
body: <p>I have an error when running the following in python</p>
  
  <blockquote>
    <p>Runtime error 
    Traceback (most recent call last):
      File "", line 6, in 
      File "C:\Python27\ArcGIS10.3\Lib\rpy2\robjects__init__.py", line 55, in 
        conversion.ri2py = default_ri2py
    NameError: name 'conversion' is not defined</p>
  </blockquote>
  
  <p>this is my script <em>init</em>.py</p>
  
  <pre><code>import rpy2.rinterface as rinterface
  import rpy2.rlike.container as rlc
  import rpy2.robjects.conversion
  
  conversion.ri2py = default_ri2py
  </code></pre>