Running a Python script in R Script is giving error

Question

I want to run a Python script in RShiny. I'm doing this by source() function but it is giving me error. I'm very new to R. Do anyone know how can I run task1 in Server.R? My OS is Windows.

server.R:

library(shiny) #library
library(shinydashboard) #library
library(devtools)
shinyServer(function(input, output) {
  observeEvent(input$actionID,{
    source("task1.py")
  })
})

task1.py:

from PIL import Image
print("Mayday! Mayday!")

Error that I'm getting is:

Warning: Error in source: task1.py:6:6: unexpected input
5: 
6: from PIL
        ^
  73: source

Hack-R · Accepted Answer · 2018-07-16 20:31:24Z

2

That won't work because source() implies that you want the file to be interpreted by R, not by Python.

You can use system() for any command you want to send to the OS, including running Python against a .py.

Example:

system("C:\\Python27\\python.exe my_script.py")

You can specify if R should wait and if any output should be captured, etc.

edited Jul 16, 2018 at 20:31

answered Jul 16, 2018 at 20:26

Hack-R

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2 Comments

Knowledge Seeker Over a year ago

I'm getting this error: Warning: running command 'C:\Program Files (x86)\Python27\python.exe tss.py' had status 127

Hack-R Over a year ago

@KnowledgeSeeker That's a different problem, but it sounds like this: stackoverflow.com/questions/18649549/… If you need more help please open a new question for it and link me.

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