passing data to subprocess.check_output

Question

I want to invoke a script, piping the contents of a string to its stdin and retrieving its stdout.

I don\'t want to touch the real filesystem so I can\'t create real

Answer 1

Use Popen.communicate instead of subprocess.check_output.

from subprocess import Popen, PIPE

p = Popen([script_name, "-"], stdin=PIPE, stdout=PIPE, stderr=PIPE)
stdout, stderr = p.communicate("this is some input")