Question

I am running an external program using pipes in python and it works fine. However I would like to pass two arguments to this external program.

Could anyone help me with that?

Thanks!

Answer 1

from subprocess import Popen, PIPE

p = Popen(['external-program', 'arg1', 'arg2'], 
                stdin=PIPE, stdout=PIPE, stderr=PIPE)

if you mean piping the out into or out of the Python script, or

from subprocess import Popen, PIPE

p = Popen('external-program arg1 arg2 | external2'], shell=True)

if you mean piping output between external programs.

See the subprocess docs. Post your code if you want a different type of solution.