Run Sudo command using Python

sudoSample.py

import subprocess

# run command using Popen and provide password using communicate.
# password requires byte format.
# sudo -S brings password request to PIPE
proc = subprocess.Popen(['sudo', '-S', 'nano', 'test.txt'], stdin=subprocess.PIPE, stdout=subprocess.PIPE, stderr=subprocess.PIPE).communicate(input=b'password\n')

# Print output and errors
print(proc)

The above code throws the following error:
b'Standard input is not a terminal\n'
But it works well with other commands. Why's that?

because "nano" program uses terminal for output?

I'll try to add shell=true and see if it works but I'm not really confident about it since I've already defined the shebang. Thanks for the reply.

if you run it like python sudo_test.py from command line you will have result. because its complete output of interpreted code read line by line. it doesnt loop in main like C code and does not await for your password.

Sorry, try again.
('', 'Password:Password:\nsudo: no password was provided\nsudo: 1 incorrect password attempt\n')

if you do just nano test.txt and check system processes, you can see your nano as process that works in loop and awaits for your input and makes output:

ps aux | grep nano
dd                 795   0.0  0.0  4258468    196 s002  U+    4:47PM   0:00.00 grep nano
dd                 792   0.0  0.0  4277208   1796 s003  S+    4:47PM   0:00.01 nano test.txt

from subprocess import Popen, PIPE, STDOUT

password = 'xxxxxx'
cmd = f'echo {password} | sudo -S nano test.txt'

with Popen(cmd, shell=True, stdin=PIPE, stdout=PIPE, stderr=PIPE, text=True) as process:
    # Wait for the command to complete and collect its output
    stdout, stderr = process.communicate()
    # Optionally, you can check the exit code and print the output
    if process.returncode == 0:
        print('Command succeeded:')
        print(stdout)
    else:
        print('Command failed:')
        print(stderr)