1 reply to this topic

[codeLoad]

I am writing a simple secure shell type program (its not encrypted though) for windows and am having an issue feeding input to a process. I used the following code:

from subprocess import Popen, PIPE
import sys

p = Popen('netsh',shell=False,stdout=PIPE, stderr=PIPE, stdin=PIPE)

while(True):
    m = raw_input(">")
    out = None
    try:
        p.stdin.write(m)
        out = p.stdout.read()
    except:
        print sys.exc_info()
    print p.returncode
    print out

The problem is, the call to read() does not return. Anyone know a way to do this?

[deskchecked]

Unfortunately, read() will block until data is available. The python docs may also have an option for performing non-blocking reads, but I don't know whether such support exists outside of sockets. If that's not an option, you'll probably need to use a separate thread for reads.