How do I create a subprocess in Python?

Question

I would like to create a subprocess of a process.

What would be a working example which shows how to accomplish this?

Answer 1

Start with the subprocess documentation.

If you want to get the output:

>>> import subprocess
>>> output = subprocess.Popen(['uname', '-a'], stdout=subprocess.PIPE).communicate()[0]
>>> output
'Linux'

If you just want to call and not deal with the output:

>>> subprocess.call(['echo', 'Hi'])
Hi
0

subprocess.check_call is the same except that it throws up a CalledProcessError in case the command is called with invalid parameters.

A good subprocess tutorial.