PYTHON PRINT OUTPUT FROM SUBPROCESS.OPEN code example
Example: how to print stdout while processing the execution in python
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)