reticulate ImportError: No module named pandas in Rstudio version 1.2

Question

I am trying to use the reticulate package in a Rmd file. I first created a setup chunk as follows:

library(reticulate)
use_virtualenv("r-reticulate")
use_python("C:\\Python27")

Then I import pandas:

#importing libraries
import pandas 

 ImportError: No module named pandas

Detailed traceback: 
  File "<string>", line 1, in <module>  

I have checked that pandas is already installed from the python command line. Why am I getting an import error here?

Answer 1

install the package in R using the py_install()

library(reticulate)
py_install("pandas")

refer this -> https://rstudio.github.io/reticulate/articles/python_packages.html

Answer 2

It appears pandas is not installed in your virtualenv. It may be on your machine, but your virtualenv isolates your application from the rest of your machine.

While your virtualenv is active:

• Open cmd/bash
• Run pip install pandas

Now pandas should be available to you within this env. Later you can generate a requirements.txt file that makes dependency management much easier.