Answers for "continue output subprocess python"

python subprocess with environment variables

import subprocess, os
my_env = os.environ.copy()
my_env["PATH"] = "/usr/sbin:/sbin:" + my_env["PATH"]
subprocess.Popen(my_command, env=my_env)

python subprocess print stdout while process running

from subprocess import Popen, PIPE, CalledProcessError

with Popen(cmd, stdout=PIPE, bufsize=1, universal_newlines=True) as p:
    for b in p.stdout:
        print(b, end='') # b is the byte from stdout

if p.returncode != 0:
    raise CalledProcessError(p.returncode, p.args)