title: Rpy2 error: 'show' not found. Using Python 3.6 and R 3.4
body: <p>I am trying to use rpy2, but when I "import rpy2.robjects as robjects", I get a lot of warnings and this error: </p>
  
  <p>Lookup Error: "show" not found. Here is the whole error:</p>
  
  <pre><code>Traceback (most recent call last):
    File "&lt;stdin&gt;", line 1, in &lt;module&gt;
    File "/Applications/anaconda3/lib/python3.6/site-packages/rpy2/robjects/__init__.py", line 19, in &lt;module&gt;
      from rpy2.robjects.robject import RObjectMixin, RObject
    File "/Applications/anaconda3/lib/python3.6/site-packages/rpy2/robjects/robject.py", line 52, in &lt;module&gt;
      class RObjectMixin(object):
    File "/Applications/anaconda3/lib/python3.6/site-packages/rpy2/robjects/robject.py", line 66, in RObjectMixin
      __show = rpy2.rinterface.baseenv.get("show")
  LookupError: 'show' not found
  </code></pre>
  
  <p>I know someone already asked a similar question, but those answers didn't help me and I was going to comment, but the instructions said to only comment if you are answering the question, so here I am asking my own. </p>