title: Installation of TensorFlow not found in Rstudio (on Mac)
body: <p>I am new to TensorFlow and Keras and I installed them in Rstudio using a conda virtual environment. I run the following line and everything works.</p>
  <pre><code>library(reticulate)
  
  use_condaenv(&quot;r-reticulate&quot;)
  
  library(tensorflow)
  
  library(keras)
  </code></pre>
  <p>However when I try to call the function &quot;keras_model_sequential()&quot; I get this error:</p>
  <pre><code>**Error: Python module tensorflow.keras was not found.
  
  Detected Python configuration:
  
  python:         /anaconda3/envs/r-reticulate/bin/python
  libpython:      //anaconda3/envs/r-reticulate/lib/libpython3.6m.dylib
  pythonhome:     /anaconda3/envs/r-reticulate:/anaconda3/envs/r-reticulate
  version:        3.6.10 |Anaconda, Inc.| (default, Mar 25 2020, 18:53:43)  [GCC 4.2.1 Compatible Clang 4.0.1 (tags/RELEASE_401/final)]
  numpy:          /anaconda3/envs/r-reticulate/lib/python3.6/site-packages/numpy
  numpy_version:  1.19.2
  tensorflow:     /anaconda3/envs/r-reticulate/lib/python3.6/site-packages/tensorflow
  
  python versions found: 
   /anaconda3/envs/r-reticulate/bin/python
   /usr/bin/python
   /anaconda3/envs/covid19/bin/python
   /anaconda3/envs/test/bin/python
   /anaconda3/envs/test2/bin/python
  **
  </code></pre>
  <p>What should I do?  I am using a Mac with El Capitan (version 10.11.6). Thank you very much Riccardo</p>