title: Error when installing rpy2 module in Python with easy_install
body: <p>I've been trying to install the rpy2 module so I can use R functions inside my Python script, but I'm getting an error after following the advice from these pages:</p>
  
  <p><strong>1)</strong> <a href="https://stackoverflow.com/questions/20202757/tried-to-guess-rs-home-but-no-r-command-in-the-path-osx-10-6">Tried to guess R&#39;s HOME but no R command in the PATH. OsX 10.6</a></p>
  
  <p><strong>2)</strong> <a href="http://rpy.sourceforge.net/rpy2/doc-dev/html/overview.html" rel="nofollow noreferrer">http://rpy.sourceforge.net/rpy2/doc-dev/html/overview.html</a></p>
  
  <hr>
  
  <p>What I've done so far:</p>
  
  <p><strong>1)</strong> Edited my path environment variable to include "C:\Program Files\R\R-3.1.0\bin\x64;"</p>
  
  <p><strong>2)</strong> Created a new environment variable called "R_HOME" and set its value to "C:\Program Files\R\R-3.1.0"</p>
  
  <p><strong>3)</strong> Created a new environment variable called "R_USER" and set its value to "Hefin" (my windows username)</p>
  
  <p>Then in my command prompt I type:</p>
  
  <pre><code>easy_install rpy2
  </code></pre>
  
  <p>As far as I'm aware, easy_install is setup and installed correctly.</p>
  
  <p>The output I get is:</p>
  
  <pre><code>Searching for rpy2
  Reading https://pypi.python.org/simple/rpy2/
  Best match: rpy2 2.5.5
  Downloading https://pypi.python.org/packages/source/r/rpy2/rpy2-2.5.5.tar.gz#md5=c874bebbe775e3cdc926a1da00252c37
  Processing rpy2-2.5.5.tar.gz
  Writing C:\Users\Hefin\AppData\Local\Temp\easy_install-98mu0_xn\rpy2-2.5.5\setup.cfg
  Running rpy2-2.5.5\setup.py -q bdist_egg --dist-dir C:\Users\Hefin\AppData\Local\Temp\easy_install-98mu0_xn\rpy2-2.5.5\egg-dist-tmp-00qpf_z8
  The system cannot find the path specified.
  Traceback (most recent call last):
    File "C:\Python34\lib\site-packages\setuptools-12.0.5-py3.4.egg\setuptools\sandbox.py", line 150, in save_modules
    File "C:\Python34\lib\site-packages\setuptools-12.0.5-py3.4.egg\setuptools\sandbox.py", line 191, in setup_context
    File "C:\Python34\lib\site-packages\setuptools-12.0.5-py3.4.egg\setuptools\sandbox.py", line 235, in run_setup
    File "C:\Python34\lib\site-packages\setuptools-12.0.5-py3.4.egg\setuptools\sandbox.py", line 265, in run
    File "C:\Python34\lib\site-packages\setuptools-12.0.5-py3.4.egg\setuptools\sandbox.py", line 234, in runner
    File "C:\Python34\lib\site-packages\setuptools-12.0.5-py3.4.egg\setuptools\sandbox.py", line 46, in _execfile
    File "C:\Users\Hefin\AppData\Local\Temp\easy_install-98mu0_xn\rpy2-2.5.5\setup.py", line 282, in &lt;module&gt;
    File "C:\Users\Hefin\AppData\Local\Temp\easy_install-98mu0_xn\rpy2-2.5.5\setup.py", line 185, in getRinterface_ext
    File "C:\Users\Hefin\AppData\Local\Temp\easy_install-98mu0_xn\rpy2-2.5.5\setup.py", line 106, in version
    File "C:\Python34\lib\subprocess.py", line 620, in check_output
      raise CalledProcessError(retcode, process.args, output=output)
  subprocess.CalledProcessError: Command '('C:\\PROGRA~1\\R\\R-31~1.0\\bin\\R', '--version')' returned non-zero exit status 1
  
  During handling of the above exception, another exception occurred:
  
  Traceback (most recent call last):
    File "C:\Python34\Scripts\easy_install-script.py", line 9, in &lt;module&gt;
      load_entry_point('setuptools==12.0.5', 'console_scripts', 'easy_install')()
    File "C:\Python34\lib\site-packages\setuptools-12.0.5-py3.4.egg\setuptools\command\easy_install.py", line 2244, in main
    File "C:\Python34\lib\distutils\core.py", line 148, in setup
      dist.run_commands()
    File "C:\Python34\lib\distutils\dist.py", line 955, in run_commands
      self.run_command(cmd)
    File "C:\Python34\lib\distutils\dist.py", line 974, in run_command
      cmd_obj.run()
    File "C:\Python34\lib\site-packages\setuptools-12.0.5-py3.4.egg\setuptools\command\easy_install.py", line 374, in run
    File "C:\Python34\lib\site-packages\setuptools-12.0.5-py3.4.egg\setuptools\command\easy_install.py", line 623, in easy_install
    File "C:\Python34\lib\site-packages\setuptools-12.0.5-py3.4.egg\setuptools\command\easy_install.py", line 653, in install_item
    File "C:\Python34\lib\site-packages\setuptools-12.0.5-py3.4.egg\setuptools\command\easy_install.py", line 838, in install_eggs
    File "C:\Python34\lib\site-packages\setuptools-12.0.5-py3.4.egg\setuptools\command\easy_install.py", line 1066, in build_and_install
    File "C:\Python34\lib\site-packages\setuptools-12.0.5-py3.4.egg\setuptools\command\easy_install.py", line 1052, in run_setup
    File "C:\Python34\lib\site-packages\setuptools-12.0.5-py3.4.egg\setuptools\sandbox.py", line 238, in run_setup
    File "C:\Python34\lib\contextlib.py", line 77, in __exit__
      self.gen.throw(type, value, traceback)
    File "C:\Python34\lib\site-packages\setuptools-12.0.5-py3.4.egg\setuptools\sandbox.py", line 191, in setup_context
    File "C:\Python34\lib\contextlib.py", line 77, in __exit__
      self.gen.throw(type, value, traceback)
    File "C:\Python34\lib\site-packages\setuptools-12.0.5-py3.4.egg\setuptools\sandbox.py", line 162, in save_modules
    File "C:\Python34\lib\site-packages\setuptools-12.0.5-py3.4.egg\setuptools\sandbox.py", line 137, in resume
    File "C:\Python34\lib\site-packages\setuptools-12.0.5-py3.4.egg\setuptools\compat.py", line 65, in reraise
    File "C:\Python34\lib\site-packages\setuptools-12.0.5-py3.4.egg\setuptools\sandbox.py", line 150, in save_modules
    File "C:\Python34\lib\site-packages\setuptools-12.0.5-py3.4.egg\setuptools\sandbox.py", line 191, in setup_context
    File "C:\Python34\lib\site-packages\setuptools-12.0.5-py3.4.egg\setuptools\sandbox.py", line 235, in run_setup
    File "C:\Python34\lib\site-packages\setuptools-12.0.5-py3.4.egg\setuptools\sandbox.py", line 265, in run
    File "C:\Python34\lib\site-packages\setuptools-12.0.5-py3.4.egg\setuptools\sandbox.py", line 234, in runner
    File "C:\Python34\lib\site-packages\setuptools-12.0.5-py3.4.egg\setuptools\sandbox.py", line 46, in _execfile
    File "C:\Users\Hefin\AppData\Local\Temp\easy_install-98mu0_xn\rpy2-2.5.5\setup.py", line 282, in &lt;module&gt;
    File "C:\Users\Hefin\AppData\Local\Temp\easy_install-98mu0_xn\rpy2-2.5.5\setup.py", line 185, in getRinterface_ext
    File "C:\Users\Hefin\AppData\Local\Temp\easy_install-98mu0_xn\rpy2-2.5.5\setup.py", line 106, in version
    File "C:\Python34\lib\subprocess.py", line 620, in check_output
      raise CalledProcessError(retcode, process.args, output=output)
  subprocess.CalledProcessError: Command '('C:\\PROGRA~1\\R\\R-31~1.0\\bin\\R', '--version')' returned non-zero exit status 1
  
  C:\Users\Hefin&gt;
  </code></pre>
  
  <p>Sorry it's so verbose!  If I then invoke python and try to import the rpy module, I get:</p>
  
  <pre><code>&gt;&gt;&gt; import python
  Traceback (most recent call last):
    File "&lt;stdin&gt;", line 1, in &lt;module&gt;
  ImportError: No module named 'python'
  &gt;&gt;&gt;
  </code></pre>
  
  <p>I'm afraid I'm new to Python and I don't know what I'm doing wrong.  I've searched through previous forum posts, but none seem to have this problem.  I'm using a 64bit machine with Windows 7, Python3.4 and R3.1.0.</p>
  
  <p>Any help or thoughts would be much appreciated as I'm sure it's just something simple I'm doing wrong.</p>
  
  <p>Thank you!</p>
  
  <p>Hefin</p>