realtime output subprocess
import subprocess
import sys
process = subprocess.Popen(cmdCommand, shell = True,bufsize = 1,
stdout=subprocess.PIPE, stderr = subprocess.STDOUT,encoding='utf-8', errors = 'replace' )
while True:
realtime_output = process.stdout.readline()
if realtime_output == '' and process.poll() is not None:
break
if realtime_output:
print(realtime_output.strip(), flush=False)
sys.stdout.flush()