rpy2 import is not working

Question

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\         


        

Answer 1

In my case it worked when I installed it in Anaconda Prompt with a command:

conda install -m rpy2

After that I had to move rpy2 directory from rpy2-2.9.0-py3.6-win32.egg (folder that was installed to) cause it didn't recognized it after installation...and moved only rpy2 folder to the following path:

C:\Users..\Anaconda3\Lib\site-packages (where all packages are called from)

That solved problem for me.

Answer 2

This might not apply directly to your question, but ever since pandas and rpy2 have upgraded, their interface has changed. In order to set it up, you must now:

from rpy2.robjects import r, pandas2ri

pandas2ri.activate()

Now, in order to change a Pandas dataframe into an R dataframe, one must use pandas2ri.py2ri(), or use pandas2ri.ri2py() if you want change an R dataframe into a Pandas dataframe. Further information can be found at https://pandas.pydata.org/pandas-docs/stable/r_interface.html.