python subprocess module subprocessPopen run OS command using subprocess

YOUR LINK HERE:

http://youtube.com/watch?v=VlfLqG_qjx0

This video will explain about running OS command using subprocess module. • In this module, we are using subprocess.Popen. • The subprocess module allows you to spawn new processes, connect to their input/output/error pipes, and obtain their return codes. This module intends to replace several older modules and functions: • • you can download code from my github link: https://github.com/happycodingforyou/... • • class subprocess.Popen(args, bufsize=-1, executable=None, stdin=None, stdout=None, stderr=None, preexec_fn=None, close_fds=True, shell=False, cwd=None, env=None, universal_newlines=False, startupinfo=None, creationflags=0, restore_signals=True, start_new_session=False, pass_fds=(), *, encoding=None, errors=None) • • If shell=True, on POSIX the executable argument specifies a replacement shell for the default /bin/sh. • • Popen.wait(timeout=None) : Wait for child process to terminate. • • Popen.returncode : A None value indicates that the process hasn’t terminated yet. • A negative value -N indicates that the child was terminated by signal N (POSIX only).

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