How to use python to run a CLI program using python

Question

I want to be able to open a CLI program with arguments and take a users input. If i do it manually it looks like this

'/programfilepath' -i '/inputfile' -x asdf -o '/output path'

Because i need the user to be able to enter the input file i have it like this

import os
question1=input('What is the input file': )
os.system("'/programfilepath' -i question1 -x asdf -o '/output path'")

This is not working correctly after the user inputs the file and in terminal its giving me an output saying

sh1: 1: (string above with input file displayed correctly): not found

I know this is a formatting issue but im not sure of my exact issue thats causing issues.

use os.system(f"'/programfilepath' -i {question1} -x asdf -o '/output path'") — bigbounty
– bigbounty, Commented Dec 7, 2020 at 20:27

chepner · Accepted Answer · 2020-12-07 20:27:41Z

1

Don't use os.system for precisely this reason. Use the subprocess module instead.

import subprocess

question1 = input('What is the input file': )
subprocess.run(['/programfilepath', '-i', question1, '-x', 'asdf', '-o', '/output path'])

answered Dec 7, 2020 at 20:27

chepner

538k77 gold badges594 silver badges746 bronze badges

Sign up to request clarification or add additional context in comments.

Collectives™ on Stack Overflow

How to use python to run a CLI program using python

1 Answer 1

Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

Comments

Your Answer

Sign up or log in

Post as a guest

Related