gistfile1.py

import sys
import time
from subprocess import PIPE, Popen
from threading  import Thread

try:
    from Queue import Queue, Empty
except ImportError:
    from queue import Queue, Empty

ON_POSIX = 'posix' in sys.builtin_module_names

def enqueue_output(out, queue):
    for line in iter(out.readline, b''):
        queue.put(line.rstrip())
    out.close()
    queue.put(None)

stdoutq = Queue()
print time.time()
p = Popen(sys.argv[1:], stdout=PIPE, stderr=PIPE, bufsize=1, close_fds=ON_POSIX)
print time.time()
t = Thread(target=enqueue_output, args=(p.stdout, stdoutq))
print time.time()
t.daemon = True 
print time.time()
t.start()
print time.time()

standard_out = []
standard_err = []

outline = stdoutq.get()
while outline:
    print outline
    standard_out.append(outline)
    outline = stdoutq.get()

print time.time()