A non-blocking read on a subprocess.PIPE in Python

Question

I\'m using the subprocess module to start a subprocess and connect to its output stream (standard output). I want to be able to execute non-blocking reads on its standard ou

Answer 1

Try the asyncproc module. For example:

import os
from asyncproc import Process
myProc = Process("myprogram.app")

while True:
    # check to see if process has ended
    poll = myProc.wait(os.WNOHANG)
    if poll != None:
        break
    # print any new output
    out = myProc.read()
    if out != "":
        print out

The module takes care of all the threading as suggested by S.Lott.