title: ModuleNotFoundError: No module named 'rpytools' while using reticulate library
body: <p>Hi this is my first stackoverflow question so sorry in advance for any mistakes. I am trying to start playing with R <code>reticulate</code> library. I have installed the package, and tried to import <code>os</code> Python module. Everything seemed to be ok, but then while I start typing for example <code>os$listdir</code> R throws this error: <code>Error in py_module_import(module, convert = convert) : ModuleNotFoundError: No module named 'rpytools'</code>. Here is my entire code:</p>
  
  <pre><code>install.packages("reticulate")
  library(reticulate)
  os &lt;- import("os")
  os$listdir("")
  </code></pre>
  
  <p>Here is my output of <code>py_config()</code> :</p>
  
  <pre><code>python:         C:\PROGRA~3\ANACON~1\python.exe
  libpython:      C:/PROGRA~3/ANACON~1/python36.dll
  pythonhome:     C:\PROGRA~3\ANACON~1
  version:        3.6.1 |Anaconda 4.4.0 (64-bit)| (default, May 11 2017, 13:25:24) [MSC v.1900 64 bit (AMD64)]
  Architecture:   64bit
  numpy:          C:\PROGRA~3\ANACON~1\lib\site-packages\numpy
  numpy_version:  1.12.1
  os:             C:\PROGRA~3\ANACON~1\lib\os.py
  </code></pre>
  
  <p>and <code>py_available(TRUE)</code> returns <code>TRUE</code>...</p>
  
  <p>Please write me if there is any additional info needed.</p>