Question

I am new to Python. I am struck up with the below problem.

I have called an exe using subprocess.check_output from my python script.

res = subprocess.check_output(["svn.exe", "list", "Https://127.0.0.1:443/svn/Repos"], stderr=subprocess.STDOUT)

when the script is executed in command prompt, i get a prompt message to enter an input,

(R)eject, accept (t)emporarily or accept (p)ermanently?

But when i execute the script from a batch file, i dont get this message and by default the call check_output fails.
Is there any way to pass the input while calling subprocess.check_output, so that i could run the script in batch.

Hi, Im updating my question:
I tried to run svn from command prompt with the below command,

echo t | svn.exe list Https://127.0.0.1:443/svn/Repos

I got the output without any user input.

But i couldnt able to pass the echo t | in subprocess.check_output.
Is there any way to do this?

Please help me to resolve this.
Thanks

Answer 1

I found two solutions for my problem,

1.found this soultion from this link http://desipenguin.com/techblog/2009/01/13/fun-with-python-subprocessstdin/

proc = subprocess.Popen((["svn.exe", "list", "Https://127.0.0.1:443/svn/Repos"], stdin=subprocess.PIPE, stdout=subprocess.PIPE)
print proc.communicate(‘t\n’)[0]

This resolved providing key input ‘t’ to the process. But i was not able to read the output. So, i followed the second solution.

2.Using two subprocesses:

p = subprocess.Popen("echo t |", shell=True, stdin=subprocess.PIPE, stdout=subprocess.PIPE, stderr=subprocess.STDOUT)
p1 = subprocess.Popen(["svn.exe", "list", "Https://127.0.0.1:443/svn/Repos"], shell=True, **stdin=p.stdout**, stdout=subprocess.PIPE, stderr=subprocess.PIPE).communicate()
output = p1[0]

Here the output of process 1 is given as input of process 2. So this is equal to echo t | svnmucc mkdir d:\temp.

Thanks.