Run Python script from rest API in django

Question

I have a script file (.py) which I need to run in my POST API requests. The scripts have few input parameters as well.

I am able to follow the link: https://django-extensions.readthedocs.io/en/latest/runscript.html and now I am successfully able to run a script from the shell.

python manage.py runscript scriptName --script-args arg1 arg2

But now, I want to run the same script with arguments in my API where arguments will be posted from the POST requests. I found that I can use subprocess for it. But it's not working.

Below is the code I am trying to run:

cmd = subprocess.Popen(['scriptName', arg1, arg2], stdout=subprocess.PIPE, stderr=subprocess.PIPE, shell=True)
out, err = cmd.communicate()

On executing the above code the script file opens up in the browser.

NOTE: The script which I am executing contains Machine Learning Code.

Please help me out and let me know what I am doing wrong here. I also need the output of the script to return as a response.

@NakulNarayanan It is not executing the script but opening the script file in the browser. — Tavish Aggarwal
– Tavish Aggarwal, Commented Mar 25, 2019 at 7:57
Why are you running a python script as a subprocess, rather than just executing the code directly in your program? — JohanL
– JohanL, Commented Mar 25, 2019 at 8:38

Jasir · Accepted Answer · 2020-02-25 18:06:49Z

3

Here is a working code

DjangoProject/Project/view.py

from rest_framework.generics import ListAPIView
from rest_framework.response import Response
import os

class MyView(ListAPIView):
    def post(self,request):
        message = self.request.POST.get('message','')
        os.system('python cout.py '+message)
        return Response(
            {
                "Status":True
            }
        )

my python script on the root django folder

DjangoProject/cout.py

import sys
print("Python : ",sys.argv[1])

with post man you can send a post request with form data 'message' and you can see that message on your console

Example: In postman

message = hi jasir

In your console :

Python : hi jasir

answered Feb 25, 2020 at 18:06

Jasir

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1 Comment

Alex M.M. Over a year ago

a minimalist approach. nice

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