import
subprocess

p
=
subprocess
.
Popen
(
[
'./script.sh'
,
'-p'
,
'1234'
]
,
stdin
=
subprocess
.
PIPE
,
stdout
=
subprocess
.
PIPE
)
stdout
,
stderr
=
p
.
communicate
(
input
=
'password\nauth username\nauth password\n'
)