Stop reading process output in Python without hang?

Question

I have a Python program for Linux almost looks like this one :

import os
import time

process = os.popen(\"top\").readlines()

time.sleep(1)

os.popen(\"kill         


        

Answer 1

( J.F. Sebastian your codes work great , I think it's better than my solution =) )

I've solved it using another way.

Instead of making the output directly on the terminal I make it into a file "tmp_file" :

top >> tmp_file

then I used the tool "cut" to make its output "which is top output" as process's value

cat tmp_file

and it did what I want it to do .This is the final code:

import os
import subprocess
import time

subprocess.Popen("top >> tmp_file",shell = True)

time.sleep(1)

os.popen("killall top")

process = os.popen("cat tmp_file").read()

os.popen("rm tmp_file")

print process

# Thing better than nothing =)

Thank you so much guys for help