How to use subprocess popen Python

Question

I know that os.popen will be replaced by subprocess, But I don't know how to convert

os.popen('swfdump /tmp/filename.swf/ -d')

to the subprocess.popen()

I also tried:

subprocess.Popen("swfdump /tmp/filename.swf -d")

subprocess.Popen("swfdump %s -d" % (filename))  # NOTE: filename is a variable

                                                # containing /tmp/filename.swf

But, I'm not getting this. Anyone please help me. Thank you

Answer 1

Subprocess.popen will takes a list of arguments:

from subprocess import Popen, PIPE

process = Popen(['swfdump', '/tmp/filename.swf', '-d'], stdout=PIPE, stderr=PIPE)

stdout, stderr = process.communicate()

Even this documentation helps users convert from os.popen to subprocess

Want to learn the concepts of python in detail? Join the Python course fast!!