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 initially did not wor installing it with conda. I solved it by first changing the active environment.

source activate [environment Name]
conda install -c r rpy2=2.8.5

Answer 2

That looks like a pandas interface to rpy2. Separately, you also need rpy2 installed on your system. I don't have rpy2, so it was easy for me to check this:

In [1]: import pandas.rpy.common
(...)
ImportError: No module named rpy2.robjects.packages


In [2]: import rpy2
(...)
ImportError: No module named rpy2

I installed it using pip:

$ pip install rpy2

In [1]: import pandas.rpy.common

It works! It import rpy2 works for you, but import pandas.rpy.common does not then the problem might be more subtle.

Answer 3

I recently ran into a similar issue. I was trying to install rpy2 using anaconda version of python(3.6.3). Below, mentioned command worked for me,

* python3 -m conda install rpy2

Answer 4

I installed using, conda install -m rpy2

and moved the directory of rpy2 from rpy2-2.9.1-py3.6-win-amd64.egg folder to the path from where the packages are called during the import and then it worked.

Answer 5

Well, first you have to install rpy2. If you are using conda you can do it using the following command

conda install -c r rpy2 

Then, if you want to use R on Jupyter Notebook environment you can activate R using

%load_ext rpy2.ipython

Answer 6

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.