How to call python script from R with arguments

Question

I have a python script that takes about 5 arguments (file name, 3 int values ​​and 2 float values). I need to call this python script from R. How can I do this. I am trying to use rPython but this does not allow me to pass an argument

library("rPython") python.load("python scriptname") 

I don't know how to pass arguments

from the command line, I run my python script as:

 python scriptname filename 10 20 0.1 5000 30 

Answer 1

You can call the system command

 system('python scriptname') 

To run the script asynchronously, you can set the wait flag to false.

 system('python scriptname filename 10 20 0.1 5000 30', wait=FALSE) 

Arguments that are passed as on the command line. You will need to use sys.argv in python code to access the variables

 #test.py import sys arg1 = sys.argv[1] arg2 = sys.argv[2] print arg1, arg2 

The R command below will display "hello world"

 system('python test.py hello world', wait=FALSE) 

Answer 2

There is a small typo in the big previous answer. The correct code is as follows:

  system('python test.py hello world', wait = FALSE) 

where wait FALSE (do not wait = Flaz or wait = False)