Python – Running shell command and capturing the output in realtime

Question

This code Running shell command and printing the output in real time.

process = subprocess.Popen('yt-dlp https://www.youtube.com/watch?v=spvPvXXu36A', shell=True, stdout=subprocess.PIPE, stderr=subprocess.PIPE)
while True:
    output = process.stdout.readline().decode()
    if output == '' and process.poll() is not None:
        break
    if output:
        print(output.strip())
rc = process.poll()
if rc == 0:
    print("Command succeeded.")
else:
    print("Command failed.")

Asked By: Muhammad Abdullah

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Source

Answer 1

You can use the subprocess module to do all that kind of stuff
I’ve included a small example below

from subprocess import call
call(['youtube-dl', 'https://www.youtube.com/watch?v=PT2_F-1esPk'])

Python docs to subprocess

Answered By: sudo

Answer 2

You are calling the exectuable --youtube-dl which probably not exists.

If --youtube-dl is a command you can type in from the cmd prompt, you should try subprocess.check_output(['--youtube-dl', some_url], shell=True) then the cmd.exe (at least on Windows) will get invoked.

Answered By: Anthon

Python – Running shell command and capturing the output in realtime

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