I am using very simple methode for interachanging between python and R by using rpy2, here is one example where I write R script as string and then use rpy2 to translate it for R and return it back,
path="H:/projects/somepackage/CODE"
from rpy2.robjects.packages import SignatureTranslatedAnonymousPackage
string = """
setwd <- function(x) {
setwd("%s")
return (getwd())}
""" % (path)
print (string)
powerpack = SignatureTranslatedAnonymousPackage(string, "powerpack")
#The R functions setwd can be called with powerpack.setwd () as
powerpack.setwd()[0]
I am not sure if it might be useful in your case but if you somehow manage to transfer your code to AWS you will definitely get the results... You can also try to save the string as a file, then ask Python to compile it as external function(I used to do so in the past without rpy2)
Cheers