install rpy2 on Windows7 64bit for Python 2.7

Question

I am trying to build and install rpy2 Python Module. But got an error (see below).

I have R installed in C:\\Program Files\\R\\R-2.15.0\\ and R.h

Answer 1

I tried all of these on my Windows 10 and got nowhere. When I did the pip, it said it was installed into the Anaconda version that I have been using for months, but when I tried an import rpy, it just gave an error.

Was going to give up, but then I slept on it a night and then I did the following from the command line:

• Deleted all my old Python instances including Anaconda
• Rebooted
• Reinstalled Anaconda (2.4.1 with Python version 2.7.11)
• Made sure python ran from the command line from any directory
• started my "mingw32" bash shell (the one that comes with git)
• Set my personal R_HOME environment variable to C:\Program Files\R\R-3.2.3
• Downloaded rpy2-2.7.5-cp27-none-win_amd64.whl from http://www.lfd.uci.edu/~gohlke/pythonlibs/#rpy2 as suggested above.
• Changed the working directory to my user Downloads directory
• Installed it with pip install rpy2-2.7.5-cp27-none-win_amd64.whl
• Started python and successfully imported and rn py2

Here is a screen capture of the final steps:

mwise@MWISE-OPTO ~/Downloads
$ pip install rpy2-2.7.5-cp27-none-win_amd64.whl
Processing c:\users\mwise\downloads\rpy2-2.7.5-cp27-none-win_amd64.whl
Requirement already satisfied (use --upgrade to upgrade): six in c:\users\mwise\appdata\local\continuum\anaconda2\lib\site-packages (from rpy2==2.7.5)
Requirement already satisfied (use --upgrade to upgrade): singledispatch in c:\users\mwise\appdata\local\continuum\anaconda2\lib\site-packages (from rpy2==2.7.5
)
Installing collected packages: rpy2
Successfully installed rpy2-2.7.5

mwise@MWISE-OPTO ~/Downloads
$ python
Python 2.7.11 |Anaconda 2.4.1 (64-bit)| (default, Dec  7 2015, 14:10:42) [MSC v.1500 64 bit (AMD64)] on win32
Type "help", "copyright", "credits" or "license" for more information.
Anaconda is brought to you by Continuum Analytics.
Please check out: http://continuum.io/thanks and https://anaconda.org
>>> import rpy2
>>> import rpy2.robjects as robjects
>>> pi = robjects.r['pi']
>>> pi[0]
3.141592653589793
>>>

Hoping this will help someone down the line...