rpy2 import is not working
pandas, python, rpy2
Solution
RPy2 is a separate project from Pandas (homepage here), so you'll have to install it separately. You should be able to do `pip install rpy2`, then restart Python and try again.
Problem
I get an error when I try to import rpy2. Here is the code and error. ``` >>> import pandas.rpy.common Traceback (most recent call last): File "C:\PF\WinPython-64bit-3.3.3.3\python-3.3.3.amd64\lib\site-packages\IPython\core\interactiveshell.py", line 2828, in run_code exec(code_obj, self.user_global_ns, self.user_ns) File "<ipython-input-148-c258a0f70d44>", line 1, in <module> import pandas.rpy.common File "C:\PF\WinPython-64bit-3.3.3.3\python-3.3.3.amd64\lib\site-packages\pandas\rpy\common.py", line 14, in <module> from rpy2.robjects.packages import importr ImportError: No module named 'rpy2' ``` What could be the issue? I'm using python version 3.3.3 and pandas version 0.13.1 EDIT Tried to install rpy2 separately. Directly using `python setup.py install` gave me an error that `os` doesn't have a module `popen3`. Directly installing the exe (rpy2-2.3.9.win32-py3.3.exe) from Christoph Gohlke's site http://www.lfd.uci.edu/~gohlke/pythonlibs/ run fine. But if I try to do `import pandas.rpy.common as com` then I get the following error (issue with the loading the DLL at `from rpy2.rinterface._rinterface import *` : ``` Traceback (most recent call last): File "C:\PF\WinPython-64bit-3.3.3.3\python-3.3.3.amd64\lib\site-packages\IPython\core\interactiveshell.py", line 2828, in run_code exec(code_obj, self.user_global_ns, self.user_ns) File "<ipython-input-10-63ebebefea80>", line 1, in <module> import pandas.rpy.common as com File "C:\PF\WinPython-64bit-3.3.3.3\python-3.3.3.amd64\lib\site- packages\pandas\rpy\common.py", line 14, in <module> from rpy2.robjects.packages import importr File "C:\PF\WinPython-64bit-3.3.3.3\python-3.3.3.amd64\lib\site-packages\rpy2\robjects\__init__.py", line 15, in <module> import rpy2.rinterface as rinterface File "C:\PF\WinPython-64bit-3.3.3.3\python-3.3.3.amd64\lib\site-packages\rpy2\rinterface\__init__.py", line 103, in <module> from rpy2.rinterface._rinterface import * ImportError: DLL load failed: %1 is not a valid Win32 application. ``` EDIT Solved it finally. It seems like adding R_HOME and R_USER environment variables did the trick.