Test server/client apps Using Python's subprocess

server.py

import time
import sys

for i in range(5):
	time.sleep(1)
	sys.stdout.write("%d\n" % i)
	sys.stdout.flush()

test.py

import subprocess
import time
import threading
import signal
import os

#############
server_cmd = "python server.py"
server_ready_pattern = "2"
client_cmd = "ls -al"
#############

def start_client(server_proc):
	client = subprocess.call(client_cmd, shell=True)
	print client
	print "![test  ] server"
	os.kill(server_proc.pid, signal.SIGTERM)

def start_server():
	proc = subprocess.Popen(server_cmd,shell=True,stdout=subprocess.PIPE)

	while True:
		time.sleep(0.1)
		line = proc.stdout.readline()
		if not line: break
		print "![server]", line.strip()
		if (line.strip() == server_ready_pattern): 
			threading.Thread(target=start_client, args=(proc,)).start()
	proc.wait()
	print "![test  ] server killed"

if __name__ == '__main__':
	start_server()

결과:

$ python test.py 
![server] 0
![server] 1
![server] 2
total 16
drwxr-xr-x   4 sean  staff   136 Sep 13 21:58 .
drwxr-xr-x  56 sean  staff  1904 Sep 13 20:50 ..
-rw-r--r--   1 sean  staff   108 Sep 13 21:36 server.py
-rw-r--r--   1 sean  staff   711 Sep 13 21:58 test.py
0
![test  ] server
![test  ] server killed