scripting - Application is not prompting confirmation message during runtime via popen in python -

i have application have load via popen in python.during runtime,application prompt confirmation message stating "can continue?".over here,we have provide yes/no option.

the popen executes command application doesn't prompt "can continue" message.it stops @ point.if run application manually,application prompts confirmation message.

proc=subprocess.popen(['app.exe -start'],shell=true, stdin=subprocess.pipe,  stdout=subprocess.pipe) 

let me know in case missing parameters.

if pass stdout=subprocess.pipe option, output redirected pipe , not displayed. can compare 2 functions :

p1 = subprocess.popen(["ls"]) p2 = subprocess.popen(["ls"], stdin=subprocess.pipe,  stdout=subprocess.pipe) 

the first 1 prints output of command, second not. can access p2.stdout.read().

so if want see output of script (and manually type confirmation), use

proc = subprocess.popen(['app.exe -start'], shell=true) 

else, have interact proc.stdin , proc.stdout

ps : use of shell=true discouraged, remove if can. important if command want run contains user input.