How to save cmd output to text file through another script python

Question

I am able to save the cmd data onto a text file using the following command:

python code_3.py > output.txt

However I am calling code_3.py from primary_script.py by writing:

import code_3
os.system('loop3.py')

But I want it to perform the functionality of the what the previous line does. This doesn't work:

os.system('loop3.py > opt.txt ')

Can someone please tell me what to do?

You should probably be using the subprocess module, os.system is pretty much deprecated. — juanpa.arrivillaga
– juanpa.arrivillaga, Commented Nov 22, 2017 at 1:17
Does this answer your question: stackoverflow.com/questions/7353054/… — roelofs
– roelofs, Commented Nov 22, 2017 at 1:17

martineau · Accepted Answer · 2017-11-22 01:33:36Z

1

Here's how to do it with the subprocess module:

import subprocess
import sys

p1 = subprocess.Popen([sys.executable, "loop3.py"], stdout=subprocess.PIPE)
output, err = p1.communicate()

with open('opt.txt', 'w') as file:
    file.write(output.decode())

answered Nov 22, 2017 at 1:33

martineau

124k29 gold badges181 silver badges319 bronze badges

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

Collectives™ on Stack Overflow

How to save cmd output to text file through another script python

1 Answer 1

Comments

Your Answer

Linked

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

Comments

Your Answer

Sign up or log in

Post as a guest

Linked

Related